diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
new file mode 100644
index 00000000..2ee74663
--- /dev/null
+++ b/.github/workflows/python-package.yml
@@ -0,0 +1,39 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+
+name: develop
+
+on:
+  push:
+    branches: [ develop ]
+  pull_request:
+    branches: [ develop ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [3.7, 3.8, 3.9, '3.10', '3.11', '3.12', pypy-3.8, pypy-3.9, pypy-3.10]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools
+        pip install flake8
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with unittest
+      run: |
+        make test
diff --git a/.gitignore b/.gitignore
index 99b18775..57f9412b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,13 +79,15 @@ _*
 *.ts
 *.webm
 *.xml
+*.json
 /.env
 /.idea
 *.m4a
 *.DS_Store
 *.txt
+*.sw[a-p]
 
 *.zip
 
+.emacs*
 .vscode
-
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index eedbeeb2..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# https://travis-ci.org/soimort/you-get
-language: python
-python:
-  - "3.4"
-  - "3.5"
-  - "3.6"
-  - "3.7"
-  - "3.8"
-  #- "nightly"  (flake8 not working in python 3.9 yet, module 'ast' has no attribute 'AugLoad')
-  - "pypy3"
-before_install:
-  - pip install flake8
-before_script:
-  - flake8 . --count --select=E9,F63,F72,F82 --show-source --statistics
-script: make test
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/43cd57826e88ed8f2152
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: never     # options: [always|never|change] default: always
diff --git a/LICENSE.txt b/LICENSE.txt
index a193d8e2..fcc26433 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2012-2020 Mort Yao <mort.yao@gmail.com> and other contributors
+Copyright (c) 2012-2024 Mort Yao <mort.yao@gmail.com> and other contributors
               (https://github.com/soimort/you-get/graphs/contributors)
 Copyright (c) 2012 Boyu Guo <iambus@gmail.com>
 
diff --git a/MANIFEST.in b/MANIFEST.in
index 521b023b..ed688fde 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,9 @@
 include *.rst
 include *.txt
 include Makefile
+include CONTRIBUTING.md
 include README.md
 include you-get
 include you-get.json
+include you-get.plugin.zsh
+recursive-include contrib *
diff --git a/Makefile b/Makefile
index c0f9cf0e..a6222024 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,12 @@
-SETUP = python3 setup.py
-
-.PHONY: default i test clean all html rst build sdist bdist bdist_egg bdist_wheel install release
+.PHONY: default i test clean all html rst build install release
 
 default: i
 
 i:
-	@(cd src/; python3 -i -c 'import you_get; print("You-Get %s\n>>> import you_get" % you_get.version.__version__)')
+	@(cd src; python -i -c 'import you_get; print("You-Get %s\n>>> import you_get" % you_get.version.__version__)')
 
 test:
-	$(SETUP) test
+	(cd src; python -m unittest discover -s ../tests)
 
 clean:
 	zenity --question
@@ -16,7 +14,7 @@ clean:
 	find . | grep __pycache__ | xargs rm -fr
 	find . | grep .pyc | xargs rm -f
 
-all: build sdist bdist bdist_egg bdist_wheel
+all: build
 
 html:
 	pandoc README.md > README.html
@@ -25,23 +23,11 @@ rst:
 	pandoc -s -t rst README.md > README.rst
 
 build:
-	$(SETUP) build
-
-sdist:
-	$(SETUP) sdist
-
-bdist:
-	$(SETUP) bdist
-
-bdist_egg:
-	$(SETUP) bdist_egg
-
-bdist_wheel:
-	$(SETUP) bdist_wheel
+	python -m build
 
 install:
-	$(SETUP) install --user --prefix=
+	python -m pip install .
 
-release:
-	zenity --question
-	$(SETUP) sdist bdist_wheel upload --sign
+release: build
+	@echo 'Upload new version to PyPI using:'
+	@echo '	twine upload --sign dist/you_get-VERSION*'
diff --git a/README.md b/README.md
index 3429f9d8..a3cb7cea 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,12 @@
 # You-Get
 
+[![Build Status](https://github.com/soimort/you-get/workflows/develop/badge.svg)](https://github.com/soimort/you-get/actions)
 [![PyPI version](https://img.shields.io/pypi/v/you-get.svg)](https://pypi.python.org/pypi/you-get/)
-[![Build Status](https://travis-ci.org/soimort/you-get.svg)](https://travis-ci.org/soimort/you-get)
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/soimort/you-get?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-**NOTICE: Read [this](https://github.com/soimort/you-get/blob/develop/CONTRIBUTING.md) if you are looking for the conventional "Issues" tab.**
+**NOTICE (30 May 2022): Support for Python 3.5, 3.6 and 3.7 will eventually be dropped. ([see details here](https://github.com/soimort/you-get/wiki/TLS-1.3-post-handshake-authentication-(PHA)))**
+
+**NOTICE (8 Mar 2019): Read [this](https://github.com/soimort/you-get/blob/develop/CONTRIBUTING.md) if you are looking for the conventional "Issues" tab.**
 
 ---
 
@@ -53,17 +55,17 @@ Are you a Python programmer? Then check out [the source](https://github.com/soim
 
 ### Prerequisites
 
-The following dependencies are necessary:
+The following dependencies are recommended:
 
-* **[Python](https://www.python.org/downloads/)**  3.2 or above
+* **[Python](https://www.python.org/downloads/)**  3.7.4 or above
 * **[FFmpeg](https://www.ffmpeg.org/)** 1.0 or above
 * (Optional) [RTMPDump](https://rtmpdump.mplayerhq.hu/)
 
 ### Option 1: Install via pip
 
-The official release of `you-get` is distributed on [PyPI](https://pypi.python.org/pypi/you-get), and can be installed easily from a PyPI mirror via the [pip](https://en.wikipedia.org/wiki/Pip_\(package_manager\)) package manager. Note that you must use the Python 3 version of `pip`:
+The official release of `you-get` is distributed on [PyPI](https://pypi.python.org/pypi/you-get), and can be installed easily from a PyPI mirror via the [pip](https://en.wikipedia.org/wiki/Pip_\(package_manager\)) package manager: (Note that you must use the Python 3 version of `pip`)
 
-    $ pip3 install you-get
+    $ pip install you-get
 
 ### Option 2: Install via [Antigen](https://github.com/zsh-users/antigen) (for Zsh users)
 
@@ -78,16 +80,26 @@ You may either download the [stable](https://github.com/soimort/you-get/archive/
 Alternatively, run
 
 ```
-$ [sudo] python3 setup.py install
+$ cd path/to/you-get
+$ [sudo] python -m pip install .
 ```
 
 Or
 
 ```
-$ python3 setup.py install --user
+$ cd path/to/you-get
+$ python -m pip install . --user
 ```
 
-to install `you-get` to a permanent path.
+to install `you-get` to a permanent path. (And don't omit the dot `.` representing the current directory)
+
+You can also use the [pipenv](https://pipenv.pypa.io/en/latest) to install the `you-get` in the Python virtual environment.
+
+```
+$ pipenv install -e .
+$ pipenv run you-get --version
+you-get: version 0.4.1555, a tiny downloader that scrapes the web.
+```
 
 ### Option 4: Git clone
 
@@ -97,7 +109,7 @@ This is the recommended way for all developers, even if you don't often code in
 $ git clone git://github.com/soimort/you-get.git
 ```
 
-Then put the cloned directory into your `PATH`, or run `./setup.py install` to install `you-get` to a permanent path.
+Then put the cloned directory into your `PATH`, or run `python -m pip install path/to/you-get` to install `you-get` to a permanent path.
 
 ### Option 5: Homebrew (Mac only)
 
@@ -115,6 +127,14 @@ You can install `you-get` easily via:
 # pkg install you-get
 ```
 
+### Option 7: Flox (Mac, Linux, and Windows WSL)
+
+You can install `you-get` easily via:
+
+```
+$ flox install you-get
+```
+
 ### Shell completion
 
 Completion definitions for Bash, Fish and Zsh can be found in [`contrib/completion`](https://github.com/soimort/you-get/tree/develop/contrib/completion). Please consult your shell's manual for how to take advantage of them.
@@ -124,7 +144,7 @@ Completion definitions for Bash, Fish and Zsh can be found in [`contrib/completi
 Based on which option you chose to install `you-get`, you may upgrade it via:
 
 ```
-$ pip3 install --upgrade you-get
+$ pip install --upgrade you-get
 ```
 
 or download the latest release via:
@@ -136,7 +156,7 @@ $ you-get https://github.com/soimort/you-get/archive/master.zip
 In order to get the latest ```develop``` branch without messing up the PIP, you can try:
 
 ```
-$ pip3 install --upgrade git+https://github.com/soimort/you-get@develop
+$ pip install --upgrade git+https://github.com/soimort/you-get@develop
 ```
 
 ## Getting Started
@@ -256,25 +276,20 @@ Type:       JPEG Image (image/jpeg)
 Size:       0.06 MiB (66482 Bytes)
 
 Downloading rms.jpg ...
-100.0% (  0.1/0.1  MB) ├████████████████████████████████████████┤[1/1]  127 kB/s
+ 100% (  0.1/  0.1MB) ├████████████████████████████████████████┤[1/1]  127 kB/s
 ```
 
 Otherwise, `you-get` will scrape the web page and try to figure out if there's anything interesting to you:
 
 ```
-$ you-get http://kopasas.tumblr.com/post/69361932517
+$ you-get https://kopasas.tumblr.com/post/69361932517
 Site:       Tumblr.com
-Title:      kopasas
-Type:       Unknown type (None)
-Size:       0.51 MiB (536583 Bytes)
-
-Site:       Tumblr.com
-Title:      tumblr_mxhg13jx4n1sftq6do1_1280
+Title:      [tumblr] tumblr_mxhg13jx4n1sftq6do1_640
 Type:       Portable Network Graphics (image/png)
-Size:       0.51 MiB (536583 Bytes)
+Size:       0.11 MiB (118484 Bytes)
 
-Downloading tumblr_mxhg13jx4n1sftq6do1_1280.png ...
-100.0% (  0.5/0.5  MB) ├████████████████████████████████████████┤[1/1]   22 MB/s
+Downloading [tumblr] tumblr_mxhg13jx4n1sftq6do1_640.png ...
+ 100% (  0.1/  0.1MB) ├████████████████████████████████████████┤[1/1]   22 MB/s
 ```
 
 **Note:**
@@ -364,83 +379,81 @@ Use `--url`/`-u` to get a list of downloadable resource URLs extracted from the
 | Site | URL | Videos? | Images? | Audios? |
 | :--: | :-- | :-----: | :-----: | :-----: |
 | **YouTube** | <https://www.youtube.com/>    |✓| | |
-| **Twitter** | <https://twitter.com/>        |✓|✓| |
-| VK          | <http://vk.com/>              |✓|✓| |
-| Vine        | <https://vine.co/>            |✓| | |
+| **X (Twitter)** | <https://x.com/>        |✓|✓| |
+| VK          | <https://vk.com/>              |✓|✓| |
 | Vimeo       | <https://vimeo.com/>          |✓| | |
-| Veoh        | <http://www.veoh.com/>        |✓| | |
+| Veoh        | <https://www.veoh.com/>        |✓| | |
 | **Tumblr**  | <https://www.tumblr.com/>     |✓|✓|✓|
-| TED         | <http://www.ted.com/>         |✓| | |
+| TED         | <https://www.ted.com/>         |✓| | |
 | SoundCloud  | <https://soundcloud.com/>     | | |✓|
 | SHOWROOM    | <https://www.showroom-live.com/> |✓| | |
 | Pinterest   | <https://www.pinterest.com/>  | |✓| |
-| MTV81       | <http://www.mtv81.com/>       |✓| | |
+| MTV81       | <https://www.mtv81.com/>       |✓| | |
 | Mixcloud    | <https://www.mixcloud.com/>   | | |✓|
-| Metacafe    | <http://www.metacafe.com/>    |✓| | |
-| Magisto     | <http://www.magisto.com/>     |✓| | |
+| Metacafe    | <https://www.metacafe.com/>    |✓| | |
+| Magisto     | <https://www.magisto.com/>     |✓| | |
 | Khan Academy | <https://www.khanacademy.org/> |✓| | |
 | Internet Archive | <https://archive.org/>   |✓| | |
 | **Instagram** | <https://instagram.com/>    |✓|✓| |
-| InfoQ       | <http://www.infoq.com/presentations/> |✓| | |
-| Imgur       | <http://imgur.com/>           | |✓| |
-| Heavy Music Archive | <http://www.heavy-music.ru/> | | |✓|
-| Freesound   | <http://www.freesound.org/>   | | |✓|
+| InfoQ       | <https://www.infoq.com/presentations/> |✓| | |
+| Imgur       | <https://imgur.com/>           | |✓| |
+| Heavy Music Archive | <https://www.heavy-music.ru/> | | |✓|
+| Freesound   | <https://www.freesound.org/>   | | |✓|
 | Flickr      | <https://www.flickr.com/>     |✓|✓| |
-| FC2 Video   | <http://video.fc2.com/>       |✓| | |
+| FC2 Video   | <https://video.fc2.com/>       |✓| | |
 | Facebook    | <https://www.facebook.com/>   |✓| | |
-| eHow        | <http://www.ehow.com/>        |✓| | |
-| Dailymotion | <http://www.dailymotion.com/> |✓| | |
-| Coub        | <http://coub.com/>            |✓| | |
-| CBS         | <http://www.cbs.com/>         |✓| | |
-| Bandcamp    | <http://bandcamp.com/>        | | |✓|
-| AliveThai   | <http://alive.in.th/>         |✓| | |
-| interest.me | <http://ch.interest.me/tvn>   |✓| | |
-| **755<br/>ナナゴーゴー** | <http://7gogo.jp/> |✓|✓| |
-| **niconico<br/>ニコニコ動画** | <http://www.nicovideo.jp/> |✓| | |
-| **163<br/>网易视频<br/>网易云音乐** | <http://v.163.com/><br/><http://music.163.com/> |✓| |✓|
-| 56网     | <http://www.56.com/>           |✓| | |
-| **AcFun** | <http://www.acfun.cn/>        |✓| | |
-| **Baidu<br/>百度贴吧** | <http://tieba.baidu.com/> |✓|✓| |
-| 爆米花网 | <http://www.baomihua.com/>     |✓| | |
-| **bilibili<br/>哔哩哔哩** | <http://www.bilibili.com/> |✓|✓|✓|
-| 豆瓣     | <http://www.douban.com/>       |✓| |✓|
-| 斗鱼     | <http://www.douyutv.com/>      |✓| | |
-| 凤凰视频 | <http://v.ifeng.com/>          |✓| | |
-| 风行网   | <http://www.fun.tv/>           |✓| | |
-| iQIYI<br/>爱奇艺 | <http://www.iqiyi.com/> |✓| | |
-| 激动网   | <http://www.joy.cn/>           |✓| | |
-| 酷6网    | <http://www.ku6.com/>          |✓| | |
-| 酷狗音乐 | <http://www.kugou.com/>        | | |✓|
-| 酷我音乐 | <http://www.kuwo.cn/>          | | |✓|
-| 乐视网   | <http://www.le.com/>           |✓| | |
-| 荔枝FM   | <http://www.lizhi.fm/>         | | |✓|
-| 秒拍     | <http://www.miaopai.com/>      |✓| | |
-| MioMio弹幕网 | <http://www.miomio.tv/>    |✓| | |
-| MissEvan<br/>猫耳FM | <http://www.missevan.com/> | | |✓|
+| eHow        | <https://www.ehow.com/>        |✓| | |
+| Dailymotion | <https://www.dailymotion.com/> |✓| | |
+| Coub        | <https://coub.com/>            |✓| | |
+| CBS         | <https://www.cbs.com/>         |✓| | |
+| Bandcamp    | <https://bandcamp.com/>        | | |✓|
+| AliveThai   | <https://alive.in.th/>         |✓| | |
+| interest.me | <https://ch.interest.me/tvn>   |✓| | |
+| **755<br/>ナナゴーゴー** | <https://7gogo.jp/> |✓|✓| |
+| **niconico<br/>ニコニコ動画** | <https://www.nicovideo.jp/> |✓| | |
+| **163<br/>网易视频<br/>网易云音乐** | <https://v.163.com/><br/><https://music.163.com/> |✓| |✓|
+| 56网     | <https://www.56.com/>           |✓| | |
+| **AcFun** | <https://www.acfun.cn/>        |✓| | |
+| **Baidu<br/>百度贴吧** | <https://tieba.baidu.com/> |✓|✓| |
+| 爆米花网 | <https://www.baomihua.com/>     |✓| | |
+| **bilibili<br/>哔哩哔哩** | <https://www.bilibili.com/> |✓|✓|✓|
+| 豆瓣     | <https://www.douban.com/>       |✓| |✓|
+| 斗鱼     | <https://www.douyutv.com/>      |✓| | |
+| 凤凰视频 | <https://v.ifeng.com/>          |✓| | |
+| 风行网   | <https://www.fun.tv/>           |✓| | |
+| iQIYI<br/>爱奇艺 | <https://www.iqiyi.com/> |✓| | |
+| 激动网   | <https://www.joy.cn/>           |✓| | |
+| 酷6网    | <https://www.ku6.com/>          |✓| | |
+| 酷狗音乐 | <https://www.kugou.com/>        | | |✓|
+| 酷我音乐 | <https://www.kuwo.cn/>          | | |✓|
+| 乐视网   | <https://www.le.com/>           |✓| | |
+| 荔枝FM   | <https://www.lizhi.fm/>         | | |✓|
+| 懒人听书 | <https://www.lrts.me/>          | | |✓|
+| 秒拍     | <https://www.miaopai.com/>      |✓| | |
+| MioMio弹幕网 | <https://www.miomio.tv/>    |✓| | |
+| MissEvan<br/>猫耳FM | <https://www.missevan.com/> | | |✓|
 | 痞客邦   | <https://www.pixnet.net/>      |✓| | |
-| PPTV聚力 | <http://www.pptv.com/>         |✓| | |
-| 齐鲁网   | <http://v.iqilu.com/>          |✓| | |
-| QQ<br/>腾讯视频 | <http://v.qq.com/>      |✓| | |
-| 企鹅直播 | <http://live.qq.com/>          |✓| | |
-| Sina<br/>新浪视频<br/>微博秒拍视频 | <http://video.sina.com.cn/><br/><http://video.weibo.com/> |✓| | |
-| Sohu<br/>搜狐视频 | <http://tv.sohu.com/> |✓| | |
-| **Tudou<br/>土豆** | <http://www.tudou.com/> |✓| | |
-| 虾米     | <http://www.xiami.com/>        |✓| |✓|
-| 阳光卫视 | <http://www.isuntv.com/>       |✓| | |
-| **音悦Tai** | <http://www.yinyuetai.com/> |✓| | |
-| **Youku<br/>优酷** | <http://www.youku.com/> |✓| | |
-| 战旗TV   | <http://www.zhanqi.tv/lives>   |✓| | |
-| 央视网   | <http://www.cntv.cn/>          |✓| | |
-| Naver<br/>네이버 | <http://tvcast.naver.com/>     |✓| | |
-| 芒果TV   | <http://www.mgtv.com/>         |✓| | |
-| 火猫TV   | <http://www.huomao.com/>       |✓| | |
-| 阳光宽频网 | <http://www.365yg.com/>      |✓| | |
+| PPTV聚力 | <https://www.pptv.com/>         |✓| | |
+| 齐鲁网   | <https://v.iqilu.com/>          |✓| | |
+| QQ<br/>腾讯视频 | <https://v.qq.com/>      |✓| | |
+| 企鹅直播 | <https://live.qq.com/>          |✓| | |
+| Sina<br/>新浪视频<br/>微博秒拍视频 | <https://video.sina.com.cn/><br/><https://video.weibo.com/> |✓| | |
+| Sohu<br/>搜狐视频 | <https://tv.sohu.com/> |✓| | |
+| **Tudou<br/>土豆** | <https://www.tudou.com/> |✓| | |
+| 阳光卫视 | <https://www.isuntv.com/>       |✓| | |
+| **Youku<br/>优酷** | <https://www.youku.com/> |✓| | |
+| 战旗TV   | <https://www.zhanqi.tv/lives>   |✓| | |
+| 央视网   | <https://www.cntv.cn/>          |✓| | |
+| Naver<br/>네이버 | <https://tvcast.naver.com/>     |✓| | |
+| 芒果TV   | <https://www.mgtv.com/>         |✓| | |
+| 火猫TV   | <https://www.huomao.com/>       |✓| | |
+| 阳光宽频网 | <https://www.365yg.com/>      |✓| | |
 | 西瓜视频 | <https://www.ixigua.com/>      |✓| | |
-| 新片场 | <https://www.xinpianchang.com//>      |✓| | |
+| 新片场 | <https://www.xinpianchang.com/>      |✓| | |
 | 快手 | <https://www.kuaishou.com/>      |✓|✓| |
 | 抖音 | <https://www.douyin.com/>      |✓| | |
 | TikTok | <https://www.tiktok.com/>      |✓| | |
-| 中国体育(TV) | <http://v.zhibo.tv/> </br><http://video.zhibo.tv/>    |✓| | |
+| 中国体育(TV) | <https://v.zhibo.tv/> </br><https://video.zhibo.tv/>    |✓| | |
 | 知乎 | <https://www.zhihu.com/>      |✓| | |
 
 For all other sites not on the list, the universal extractor will take care of finding and downloading interesting resources from the page.
@@ -453,7 +466,7 @@ Check if it's already a known problem on <https://github.com/soimort/you-get/wik
 
 ## Getting Involved
 
-You can reach us on the Gitter channel [#soimort/you-get](https://gitter.im/soimort/you-get) (here's how you [set up your IRC client](http://irc.gitter.im) for Gitter). If you have a quick question regarding `you-get`, ask it there.
+You can reach us on the Gitter channel [#soimort/you-get](https://gitter.im/soimort/you-get) (here's how you [set up your IRC client](https://irc.gitter.im) for Gitter). If you have a quick question regarding `you-get`, ask it there.
 
 If you are seeking to report an issue or contribute, please make sure to read [the guidelines](https://github.com/soimort/you-get/blob/develop/CONTRIBUTING.md) first.
 
diff --git a/README.rst b/README.rst
index 3c23ab5e..376abcf7 100644
--- a/README.rst
+++ b/README.rst
@@ -52,7 +52,7 @@ source <https://github.com/soimort/you-get>`__ and fork it!
 
 .. |PyPI version| image:: https://badge.fury.io/py/you-get.png
    :target: http://badge.fury.io/py/you-get
-.. |Build Status| image:: https://api.travis-ci.org/soimort/you-get.png
-   :target: https://travis-ci.org/soimort/you-get
+.. |Build Status| image:: https://github.com/soimort/you-get/workflows/develop/badge.svg
+   :target: https://github.com/soimort/you-get/actions
 .. |Gitter| image:: https://badges.gitter.im/Join%20Chat.svg
    :target: https://gitter.im/soimort/you-get?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 00000000..d9fb8cf3
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,5 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+Please report security issues to <mort.yao+you-get@gmail.com>.
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000..7af04e46
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+# runtime dependencies
+dukpy
diff --git a/setup.py b/setup.py
index 24dc9fb2..0804ae33 100755
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,20 @@ PACKAGE_NAME = 'you_get'
 
 PROJ_METADATA = '%s.json' % PROJ_NAME
 
-import os, json, imp
+import importlib.util
+import importlib.machinery
+
+def load_source(modname, filename):
+    loader = importlib.machinery.SourceFileLoader(modname, filename)
+    spec = importlib.util.spec_from_file_location(modname, filename, loader=loader)
+    module = importlib.util.module_from_spec(spec)
+    # The module is always executed and not cached in sys.modules.
+    # Uncomment the following line to cache the module.
+    # sys.modules[module.__name__] = module
+    loader.exec_module(module)
+    return module
+
+import os, json
 here = os.path.abspath(os.path.dirname(__file__))
 proj_info = json.loads(open(os.path.join(here, PROJ_METADATA), encoding='utf-8').read())
 try:
@@ -13,7 +26,7 @@ try:
 except:
     README = ""
 CHANGELOG = open(os.path.join(here, 'CHANGELOG.rst'), encoding='utf-8').read()
-VERSION = imp.load_source('version', os.path.join(here, 'src/%s/version.py' % PACKAGE_NAME)).__version__
+VERSION = load_source('version', os.path.join(here, 'src/%s/version.py' % PACKAGE_NAME)).__version__
 
 from setuptools import setup, find_packages
 setup(
@@ -43,7 +56,8 @@ setup(
 
     entry_points = {'console_scripts': proj_info['console_scripts']},
 
-    extras_require={
+    install_requires = ['dukpy'],
+    extras_require = {
         'socks': ['PySocks'],
     }
 )
diff --git a/src/you_get/common.py b/src/you_get/common.py
index 9c56b5c2..0b307dde 100755
--- a/src/you_get/common.py
+++ b/src/you_get/common.py
@@ -76,6 +76,7 @@ SITES = {
     'letv'             : 'le',
     'lizhi'            : 'lizhi',
     'longzhu'          : 'longzhu',
+    'lrts'             : 'lrts',
     'magisto'          : 'magisto',
     'metacafe'         : 'metacafe',
     'mgtv'             : 'mgtv',
@@ -110,14 +111,12 @@ SITES = {
     'wanmen'           : 'wanmen',
     'weibo'            : 'miaopai',
     'veoh'             : 'veoh',
-    'vine'             : 'vine',
     'vk'               : 'vk',
-    'xiami'            : 'xiami',
+    'x'                : 'twitter',
     'xiaokaxiu'        : 'yixia',
     'xiaojiadianvideo' : 'fc2video',
     'ximalaya'         : 'ximalaya',
     'xinpianchang'     : 'xinpianchang',
-    'yinyuetai'        : 'yinyuetai',
     'yizhibo'          : 'yizhibo',
     'youku'            : 'youku',
     'youtu'            : 'youtube',
@@ -137,13 +136,16 @@ cookies = None
 output_filename = None
 auto_rename = False
 insecure = False
+m3u8 = False
+postfix = False
+prefix = None
 
 fake_headers = {
-    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',  # noqa
+    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
     'Accept-Charset': 'UTF-8,*;q=0.5',
     'Accept-Encoding': 'gzip,deflate,sdch',
     'Accept-Language': 'en-US,en;q=0.8',
-    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0',  # noqa
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36 Edg/126.0.2592.113'  # Latest Edge
 }
 
 if sys.stdout.isatty():
@@ -341,10 +343,38 @@ def undeflate(data):
     return decompressobj.decompress(data)+decompressobj.flush()
 
 
+# an http.client implementation of get_content()
+# because urllib does not support "Connection: keep-alive"
+def getHttps(host, url, headers, debuglevel=0):
+    import http.client
+
+    conn = http.client.HTTPSConnection(host)
+    conn.set_debuglevel(debuglevel)
+    conn.request("GET", url, headers=headers)
+    resp = conn.getresponse()
+    logging.debug('getHttps: %s' % resp.getheaders())
+    set_cookie = resp.getheader('set-cookie')
+
+    data = resp.read()
+    try:
+        data = ungzip(data)  # gzip
+        data = undeflate(data)  # deflate
+    except:
+        pass
+
+    conn.close()
+    return str(data, encoding='utf-8'), set_cookie  # TODO: support raw data
+
+
 # DEPRECATED in favor of get_content()
 def get_response(url, faker=False):
     logging.debug('get_response: %s' % url)
-
+    ctx = None
+    if insecure:
+        # ignore ssl errors
+        ctx = ssl.create_default_context()
+        ctx.check_hostname = False
+        ctx.verify_mode = ssl.CERT_NONE
     # install cookies
     if cookies:
         opener = request.build_opener(request.HTTPCookieProcessor(cookies))
@@ -352,10 +382,10 @@ def get_response(url, faker=False):
 
     if faker:
         response = request.urlopen(
-            request.Request(url, headers=fake_headers), None
+            request.Request(url, headers=fake_headers), None, context=ctx,
         )
     else:
-        response = request.urlopen(url)
+        response = request.urlopen(url, context=ctx)
 
     data = response.read()
     if response.info().get('Content-Encoding') == 'gzip':
@@ -434,8 +464,17 @@ def get_content(url, headers={}, decoded=True):
 
     req = request.Request(url, headers=headers)
     if cookies:
-        cookies.add_cookie_header(req)
-        req.headers.update(req.unredirected_hdrs)
+        # NOTE: Do not use cookies.add_cookie_header(req)
+        # #HttpOnly_ cookies were not supported by CookieJar and MozillaCookieJar properly until python 3.10
+        # See also:
+        # - https://github.com/python/cpython/pull/17471
+        # - https://bugs.python.org/issue2190
+        # Here we add cookies to the request headers manually
+        cookie_strings = []
+        for cookie in list(cookies):
+            cookie_strings.append(cookie.name + '=' + cookie.value)
+        cookie_headers = {'Cookie': '; '.join(cookie_strings)}
+        req.headers.update(cookie_headers)
 
     response = urlopen_with_retry(req)
     data = response.read()
@@ -478,8 +517,17 @@ def post_content(url, headers={}, post_data={}, decoded=True, **kwargs):
 
     req = request.Request(url, headers=headers)
     if cookies:
-        cookies.add_cookie_header(req)
-        req.headers.update(req.unredirected_hdrs)
+        # NOTE: Do not use cookies.add_cookie_header(req)
+        # #HttpOnly_ cookies were not supported by CookieJar and MozillaCookieJar properly until python 3.10
+        # See also:
+        # - https://github.com/python/cpython/pull/17471
+        # - https://bugs.python.org/issue2190
+        # Here we add cookies to the request headers manually
+        cookie_strings = []
+        for cookie in list(cookies):
+            cookie_strings.append(cookie.name + '=' + cookie.value)
+        cookie_headers = {'Cookie': '; '.join(cookie_strings)}
+        req.headers.update(cookie_headers)
     if kwargs.get('post_data_raw'):
         post_data_enc = bytes(kwargs['post_data_raw'], 'utf-8')
     else:
@@ -667,7 +715,7 @@ def url_save(
                         bar.done()
                     if not force and auto_rename:
                         path, ext = os.path.basename(filepath).rsplit('.', 1)
-                        finder = re.compile(' \([1-9]\d*?\)$')
+                        finder = re.compile(r' \([1-9]\d*?\)$')
                         if (finder.search(path) is None):
                             thisfile = path + ' (1).' + ext
                         else:
@@ -966,6 +1014,10 @@ def download_urls(
             pass
 
     title = tr(get_filename(title))
+    if postfix and 'vid' in kwargs:
+        title = "%s [%s]" % (title, kwargs['vid'])
+    if prefix is not None:
+        title = "[%s] %s" % (prefix, title)
     output_filename = get_output_filename(urls, title, ext, output_dir, merge)
     output_filepath = os.path.join(output_dir, output_filename)
 
@@ -1322,7 +1374,13 @@ def download_main(download, download_playlist, urls, playlist, **kwargs):
         if re.match(r'https?://', url) is None:
             url = 'http://' + url
 
-        if playlist:
+        if m3u8:
+            if output_filename:
+                title = output_filename
+            else:
+                title = "m3u8file"
+            download_url_ffmpeg(url=url, title=title,ext = 'mp4',output_dir = '.')
+        elif playlist:
             download_playlist(url, **kwargs)
         else:
             download(url, **kwargs)
@@ -1422,12 +1480,25 @@ def load_cookies(cookiefile):
 def set_socks_proxy(proxy):
     try:
         import socks
-        socks_proxy_addrs = proxy.split(':')
-        socks.set_default_proxy(
-            socks.SOCKS5,
-            socks_proxy_addrs[0],
-            int(socks_proxy_addrs[1])
-        )
+        if '@' in proxy:
+            proxy_info = proxy.split("@")
+            socks_proxy_addrs = proxy_info[1].split(':')
+            socks_proxy_auth = proxy_info[0].split(":")
+            socks.set_default_proxy(
+                socks.SOCKS5,
+                socks_proxy_addrs[0],
+                int(socks_proxy_addrs[1]),
+                True,
+                socks_proxy_auth[0],
+                socks_proxy_auth[1]
+            )
+        else:
+           socks_proxy_addrs = proxy.split(':')
+           socks.set_default_proxy(
+               socks.SOCKS5,
+               socks_proxy_addrs[0],
+               int(socks_proxy_addrs[1]),
+           )
         socket.socket = socks.socksocket
 
         def getaddrinfo(*args):
@@ -1495,6 +1566,14 @@ def script_main(download, download_playlist, **kwargs):
         '--no-caption', action='store_true',
         help='Do not download captions (subtitles, lyrics, danmaku, ...)'
     )
+    download_grp.add_argument(
+        '--post', '--postfix', dest='postfix', action='store_true', default=False,
+        help='Postfix downloaded files with unique identifiers'
+    )
+    download_grp.add_argument(
+        '--pre', '--prefix', dest='prefix', metavar='PREFIX', default=None,
+        help='Prefix downloaded files with string'
+    )
     download_grp.add_argument(
         '-f', '--force', action='store_true', default=False,
         help='Force overwriting existing files'
@@ -1541,6 +1620,21 @@ def script_main(download, download_playlist, **kwargs):
         '-l', '--playlist', action='store_true',
         help='Prefer to download a playlist'
     )
+
+    playlist_grp = parser.add_argument_group('Playlist optional options')
+    playlist_grp.add_argument(
+        '--first', metavar='FIRST',
+        help='the first number'
+    )
+    playlist_grp.add_argument(
+        '--last', metavar='LAST',
+        help='the last number'
+    )
+    playlist_grp.add_argument(
+        '--size', '--page-size', metavar='PAGE_SIZE',
+        help='the page size number'
+    )
+
     download_grp.add_argument(
         '-a', '--auto-rename', action='store_true', default=False,
         help='Auto rename same name different files'
@@ -1565,13 +1659,17 @@ def script_main(download, download_playlist, **kwargs):
         '--no-proxy', action='store_true', help='Never use a proxy'
     )
     proxy_grp.add_argument(
-        '-s', '--socks-proxy', metavar='HOST:PORT',
+        '-s', '--socks-proxy', metavar='HOST:PORT or USERNAME:PASSWORD@HOST:PORT',
         help='Use an SOCKS5 proxy for downloading'
     )
 
     download_grp.add_argument('--stream', help=argparse.SUPPRESS)
     download_grp.add_argument('--itag', help=argparse.SUPPRESS)
 
+    download_grp.add_argument('-m', '--m3u8', action='store_true', default=False,
+        help = 'download video using an m3u8 url')
+
+
     parser.add_argument('URL', nargs='*', help=argparse.SUPPRESS)
 
     args = parser.parse_args()
@@ -1597,6 +1695,9 @@ def script_main(download, download_playlist, **kwargs):
     global output_filename
     global auto_rename
     global insecure
+    global m3u8
+    global postfix
+    global prefix
     output_filename = args.output_filename
     extractor_proxy = args.extractor_proxy
 
@@ -1618,6 +1719,9 @@ def script_main(download, download_playlist, **kwargs):
     if args.cookies:
         load_cookies(args.cookies)
 
+    if args.m3u8:
+        m3u8 = True
+
     caption = True
     stream_id = args.format or args.stream or args.itag
     if args.no_caption:
@@ -1630,6 +1734,8 @@ def script_main(download, download_playlist, **kwargs):
         # ignore ssl
         insecure = True
 
+    postfix = args.postfix
+    prefix = args.prefix
 
     if args.no_proxy:
         set_http_proxy('')
@@ -1658,7 +1764,7 @@ def script_main(download, download_playlist, **kwargs):
     socket.setdefaulttimeout(args.timeout)
 
     try:
-        extra = {}
+        extra = {'args': args}
         if extractor_proxy:
             extra['extractor_proxy'] = extractor_proxy
         if stream_id:
@@ -1716,20 +1822,10 @@ def google_search(url):
     url = 'https://www.google.com/search?tbm=vid&q=%s' % parse.quote(keywords)
     page = get_content(url, headers=fake_headers)
     videos = re.findall(
-        r'<a href="(https?://[^"]+)" onmousedown="[^"]+"><h3 class="[^"]*">([^<]+)<', page
+        r'(https://www\.youtube\.com/watch\?v=[\w-]+)', page
     )
-    vdurs = re.findall(r'<span class="vdur[^"]*">([^<]+)<', page)
-    durs = [r1(r'(\d+:\d+)', unescape_html(dur)) for dur in vdurs]
-    print('Google Videos search:')
-    for v in zip(videos, durs):
-        print('- video:  {} [{}]'.format(
-            unescape_html(v[0][1]),
-            v[1] if v[1] else '?'
-        ))
-        print('# you-get %s' % log.sprint(v[0][0], log.UNDERLINE))
-        print()
     print('Best matched result:')
-    return(videos[0][0])
+    return(videos[0])
 
 
 def url_to_module(url):
@@ -1760,9 +1856,12 @@ def url_to_module(url):
         )
     else:
         try:
-            location = get_location(url) # t.co isn't happy with fake_headers
+            try:
+                location = get_location(url) # t.co isn't happy with fake_headers
+            except:
+                location = get_location(url, headers=fake_headers)
         except:
-            location = get_location(url, headers=fake_headers)
+            location = get_location(url, headers=fake_headers, get_method='GET')
 
         if location and location != url and not location.startswith('/'):
             return url_to_module(location)
diff --git a/src/you_get/extractor.py b/src/you_get/extractor.py
index 83742f0f..fa2518db 100644
--- a/src/you_get/extractor.py
+++ b/src/you_get/extractor.py
@@ -238,7 +238,8 @@ class VideoExtractor():
             download_urls(urls, self.title, ext, total_size, headers=headers,
                           output_dir=kwargs['output_dir'],
                           merge=kwargs['merge'],
-                          av=stream_id in self.dash_streams)
+                          av=stream_id in self.dash_streams,
+                          vid=self.vid)
 
             if 'caption' not in kwargs or not kwargs['caption']:
                 print('Skipping captions or danmaku.')
diff --git a/src/you_get/extractors/__init__.py b/src/you_get/extractors/__init__.py
index 4280d236..e68cd174 100755
--- a/src/you_get/extractors/__init__.py
+++ b/src/you_get/extractors/__init__.py
@@ -74,16 +74,13 @@ from .twitter import *
 from .ucas import *
 from .veoh import *
 from .vimeo import *
-from .vine import *
 from .vk import *
 from .w56 import *
 from .wanmen import *
-from .xiami import *
 from .xinpianchang import *
-from .yinyuetai import *
 from .yixia import *
 from .youku import *
 from .youtube import *
 from .zhanqi import *
 from .zhibo import *
-from .zhihu import *
\ No newline at end of file
+from .zhihu import *
diff --git a/src/you_get/extractors/acfun.py b/src/you_get/extractors/acfun.py
index b83c2859..5775eb5e 100644
--- a/src/you_get/extractors/acfun.py
+++ b/src/you_get/extractors/acfun.py
@@ -1,175 +1,213 @@
 #!/usr/bin/env python
 
-__all__ = ['acfun_download']
-
 from ..common import *
+from ..extractor import VideoExtractor
 
-from .le import letvcloud_download_by_vu
-from .qq import qq_download_by_vid
-from .sina import sina_download_by_vid
-from .tudou import tudou_download_by_iid
-from .youku import youku_download_by_vid
+class AcFun(VideoExtractor):
+    name = "AcFun"
 
-import json
-import re
-import base64
-import time
+    stream_types = [
+        {'id': '2160P', 'qualityType': '2160p'},
+        {'id': '1080P60', 'qualityType': '1080p60'},
+        {'id': '720P60', 'qualityType': '720p60'},
+        {'id': '1080P+', 'qualityType': '1080p+'},
+        {'id': '1080P', 'qualityType': '1080p'},
+        {'id': '720P', 'qualityType': '720p'},
+        {'id': '540P', 'qualityType': '540p'},
+        {'id': '360P', 'qualityType': '360p'}
+    ]    
 
-def get_srt_json(id):
-    url = 'http://danmu.aixifan.com/V2/%s' % id
-    return get_content(url)
+    def prepare(self, **kwargs):
+        assert re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/(\D|bangumi)/\D\D(\d+)', self.url)
 
-def youku_acfun_proxy(vid, sign, ref):
-    endpoint = 'http://player.acfun.cn/flash_data?vid={}&ct=85&ev=3&sign={}&time={}'
-    url = endpoint.format(vid, sign, str(int(time.time() * 1000)))
-    json_data = json.loads(get_content(url, headers=dict(referer=ref)))['data']
-    enc_text = base64.b64decode(json_data)
-    dec_text = rc4(b'8bdc7e1a', enc_text).decode('utf8')
-    youku_json = json.loads(dec_text)
+        if re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/\D/\D\D(\d+)', self.url):
+            html = get_content(self.url, headers=fake_headers)
+            json_text = match1(html, r"(?s)videoInfo\s*=\s*(\{.*?\});")
+            json_data = json.loads(json_text)
+            vid = json_data.get('currentVideoInfo').get('id')
+            up = json_data.get('user').get('name')
+            self.title = json_data.get('title')
+            video_list = json_data.get('videoList')
+            if len(video_list) > 1:
+                self.title += " - " + [p.get('title') for p in video_list if p.get('id') == vid][0]
+            currentVideoInfo = json_data.get('currentVideoInfo')
+
+        elif re.match(r"https?://[^\.]*\.*acfun\.[^\.]+/bangumi/aa(\d+)", self.url):
+            html = get_content(self.url, headers=fake_headers)
+            tag_script = match1(html, r'<script>\s*window\.pageInfo([^<]+)</script>')
+            json_text = tag_script[tag_script.find('{') : tag_script.find('};') + 1]
+            json_data = json.loads(json_text)
+            self.title = json_data['bangumiTitle'] + " " + json_data['episodeName'] + " " + json_data['title']
+            vid = str(json_data['videoId'])
+            up = "acfun"
+            currentVideoInfo = json_data.get('currentVideoInfo')
 
-    yk_streams = {}
-    for stream in youku_json['stream']:
-        tp = stream['stream_type']
-        yk_streams[tp] = [], stream['total_size']
-        if stream.get('segs'):
-            for seg in stream['segs']:
-                yk_streams[tp][0].append(seg['url'])
         else:
-            yk_streams[tp] = stream['m3u8'], stream['total_size']
+            raise NotImplemented            
 
-    return yk_streams
+        if 'ksPlayJson' in currentVideoInfo:
+            durationMillis = currentVideoInfo['durationMillis']
+            ksPlayJson = ksPlayJson = json.loads( currentVideoInfo['ksPlayJson'] )
+            representation = ksPlayJson.get('adaptationSet')[0].get('representation')
+            stream_list = representation
 
-def acfun_download_by_vid(vid, title, output_dir='.', merge=True, info_only=False, **kwargs):
-    """str, str, str, bool, bool ->None
+        for stream in stream_list:
+            m3u8_url = stream["url"]
+            size = durationMillis * stream["avgBitrate"] / 8
+            # size = float('inf')
+            container = 'mp4'
+            stream_id = stream["qualityLabel"]
+            quality = stream["qualityType"]
+            
+            stream_data = dict(src=m3u8_url, size=size, container=container, quality=quality)
+            self.streams[stream_id] = stream_data
 
-    Download Acfun video by vid.
+        assert self.title and m3u8_url
+        self.title = unescape_html(self.title)
+        self.title = escape_file_path(self.title)
+        p_title = r1('active">([^<]+)', html)
+        self.title = '%s (%s)' % (self.title, up)
+        if p_title:
+            self.title = '%s - %s' % (self.title, p_title)       
 
-    Call Acfun API, decide which site to use, and pass the job to its
-    extractor.
-    """
 
-    #first call the main parasing API
-    info = json.loads(get_content('http://www.acfun.cn/video/getVideo.aspx?id=' + vid, headers=fake_headers))
+    def download(self, **kwargs):
+        if 'json_output' in kwargs and kwargs['json_output']:
+            json_output.output(self)
+        elif 'info_only' in kwargs and kwargs['info_only']:
+            if 'stream_id' in kwargs and kwargs['stream_id']:
+                # Display the stream
+                stream_id = kwargs['stream_id']
+                if 'index' not in kwargs:
+                    self.p(stream_id)
+                else:
+                    self.p_i(stream_id)
+            else:
+                # Display all available streams
+                if 'index' not in kwargs:
+                    self.p([])
+                else:
+                    stream_id = self.streams_sorted[0]['id'] if 'id' in self.streams_sorted[0] else self.streams_sorted[0]['itag']
+                    self.p_i(stream_id)
 
-    sourceType = info['sourceType']
-
-    #decide sourceId to know which extractor to use
-    if 'sourceId' in info: sourceId = info['sourceId']
-    # danmakuId = info['danmakuId']
-
-    #call extractor decided by sourceId
-    if sourceType == 'sina':
-        sina_download_by_vid(sourceId, title, output_dir=output_dir, merge=merge, info_only=info_only)
-    elif sourceType == 'youku':
-        youku_download_by_vid(sourceId, title=title, output_dir=output_dir, merge=merge, info_only=info_only, **kwargs)
-    elif sourceType == 'tudou':
-        tudou_download_by_iid(sourceId, title, output_dir=output_dir, merge=merge, info_only=info_only)
-    elif sourceType == 'qq':
-        qq_download_by_vid(sourceId, title, True, output_dir=output_dir, merge=merge, info_only=info_only)
-    elif sourceType == 'letv':
-        letvcloud_download_by_vu(sourceId, '2d8c027396', title, output_dir=output_dir, merge=merge, info_only=info_only)
-    elif sourceType == 'zhuzhan':
-        #As in Jul.28.2016, Acfun is using embsig to anti hotlink so we need to pass this
-#In Mar. 2017 there is a dedicated ``acfun_proxy'' in youku cloud player
-#old code removed
-        url = 'http://www.acfun.cn/v/ac' + vid
-        yk_streams = youku_acfun_proxy(info['sourceId'], info['encode'], url)
-        seq = ['mp4hd3', 'mp4hd2', 'mp4hd', 'flvhd']
-        for t in seq:
-            if yk_streams.get(t):
-                preferred = yk_streams[t]
-                break
-#total_size in the json could be incorrect(F.I. 0)
-        size = 0
-        for url in preferred[0]:
-            _, _, seg_size = url_info(url)
-            size += seg_size
-#fallback to flvhd is not quite possible
-        if re.search(r'fid=[0-9A-Z\-]*.flv', preferred[0][0]):
-            ext = 'flv'
         else:
-            ext = 'mp4'
-        print_info(site_info, title, ext, size)
+            if 'stream_id' in kwargs and kwargs['stream_id']:
+                # Download the stream
+                stream_id = kwargs['stream_id']
+            else:
+                stream_id = self.streams_sorted[0]['id'] if 'id' in self.streams_sorted[0] else self.streams_sorted[0]['itag']
+
+            if 'index' not in kwargs:
+                self.p(stream_id)
+            else:
+                self.p_i(stream_id)
+            if stream_id in self.streams:
+                url = self.streams[stream_id]['src']
+                ext = self.streams[stream_id]['container']
+                total_size = self.streams[stream_id]['size']
+
+
+            if ext == 'm3u8' or ext == 'm4a':
+                ext = 'mp4'
+
+            if not url:
+                log.wtf('[Failed] Cannot extract video source.')
+            # For legacy main()
+            headers = {}
+            if self.ua is not None:
+                headers['User-Agent'] = self.ua
+            if self.referer is not None:
+                headers['Referer'] = self.referer
+
+            download_url_ffmpeg(url, self.title, ext, output_dir=kwargs['output_dir'], merge=kwargs['merge'])                           
+
+            if 'caption' not in kwargs or not kwargs['caption']:
+                print('Skipping captions or danmaku.')
+                return
+
+            for lang in self.caption_tracks:
+                filename = '%s.%s.srt' % (get_filename(self.title), lang)
+                print('Saving %s ... ' % filename, end="", flush=True)
+                srt = self.caption_tracks[lang]
+                with open(os.path.join(kwargs['output_dir'], filename),
+                          'w', encoding='utf-8') as x:
+                    x.write(srt)
+                print('Done.')
+
+            if self.danmaku is not None and not dry_run:
+                filename = '{}.cmt.xml'.format(get_filename(self.title))
+                print('Downloading {} ...\n'.format(filename))
+                with open(os.path.join(kwargs['output_dir'], filename), 'w', encoding='utf8') as fp:
+                    fp.write(self.danmaku)
+
+            if self.lyrics is not None and not dry_run:
+                filename = '{}.lrc'.format(get_filename(self.title))
+                print('Downloading {} ...\n'.format(filename))
+                with open(os.path.join(kwargs['output_dir'], filename), 'w', encoding='utf8') as fp:
+                    fp.write(self.lyrics)
+
+            # For main_dev()
+            #download_urls(urls, self.title, self.streams[stream_id]['container'], self.streams[stream_id]['size'])
+        keep_obj = kwargs.get('keep_obj', False)
+        if not keep_obj:
+            self.__init__()
+
+
+    def acfun_download(self, url, output_dir='.', merge=True, info_only=False, **kwargs):
+        assert re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/(\D|bangumi)/\D\D(\d+)', url)
+
+        def getM3u8UrlFromCurrentVideoInfo(currentVideoInfo):
+            if 'playInfos' in currentVideoInfo:
+                return currentVideoInfo['playInfos'][0]['playUrls'][0]
+            elif 'ksPlayJson' in currentVideoInfo:
+                ksPlayJson = json.loads( currentVideoInfo['ksPlayJson'] )
+                representation = ksPlayJson.get('adaptationSet')[0].get('representation')
+                reps = []
+                for one in representation:
+                    reps.append( (one['width']* one['height'], one['url'], one['backupUrl']) )
+                return max(reps)[1]
+
+
+        if re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/\D/\D\D(\d+)', url):
+            html = get_content(url, headers=fake_headers)
+            json_text = match1(html, r"(?s)videoInfo\s*=\s*(\{.*?\});")
+            json_data = json.loads(json_text)
+            vid = json_data.get('currentVideoInfo').get('id')
+            up = json_data.get('user').get('name')
+            title = json_data.get('title')
+            video_list = json_data.get('videoList')
+            if len(video_list) > 1:
+                title += " - " + [p.get('title') for p in video_list if p.get('id') == vid][0]
+            currentVideoInfo = json_data.get('currentVideoInfo')
+            m3u8_url = getM3u8UrlFromCurrentVideoInfo(currentVideoInfo)
+        elif re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/bangumi/aa(\d+)', url):
+            html = get_content(url, headers=fake_headers)
+            tag_script = match1(html, r'<script>\s*window\.pageInfo([^<]+)</script>')
+            json_text = tag_script[tag_script.find('{') : tag_script.find('};') + 1]
+            json_data = json.loads(json_text)
+            title = json_data['bangumiTitle'] + " " + json_data['episodeName'] + " " + json_data['title']
+            vid = str(json_data['videoId'])
+            up = "acfun"
+
+            currentVideoInfo = json_data.get('currentVideoInfo')
+            m3u8_url = getM3u8UrlFromCurrentVideoInfo(currentVideoInfo)
+
+        else:
+            raise NotImplemented
+
+        assert title and m3u8_url
+        title = unescape_html(title)
+        title = escape_file_path(title)
+        p_title = r1('active">([^<]+)', html)
+        title = '%s (%s)' % (title, up)
+        if p_title:
+            title = '%s - %s' % (title, p_title)
+
+        print_info(site_info, title, 'm3u8', float('inf'))
         if not info_only:
-            download_urls(preferred[0], title, ext, size, output_dir=output_dir, merge=merge)
-    else:
-        raise NotImplementedError(sourceType)
-
-    if not info_only and not dry_run:
-        if not kwargs['caption']:
-            print('Skipping danmaku.')
-            return
-        try:
-            title = get_filename(title)
-            print('Downloading %s ...\n' % (title + '.cmt.json'))
-            cmt = get_srt_json(vid)
-            with open(os.path.join(output_dir, title + '.cmt.json'), 'w', encoding='utf-8') as x:
-                x.write(cmt)
-        except:
-            pass
-
-def acfun_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
-    assert re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/(\D|bangumi)/\D\D(\d+)', url)
-
-    if re.match(r'https?://[^\.]*\.*acfun\.[^\.]+/\D/\D\D(\d+)', url):
-        html = get_content(url, headers=fake_headers)
-        json_text = match1(html, r"(?s)videoInfo\s*=\s*(\{.*?\});")
-        json_data = json.loads(json_text)
-        vid = json_data.get('currentVideoInfo').get('id')
-        up = json_data.get('user').get('name')
-        title = json_data.get('title')
-        video_list = json_data.get('videoList')
-        if len(video_list) > 1:
-            title += " - " + [p.get('title') for p in video_list if p.get('id') == vid][0]
-        currentVideoInfo = json_data.get('currentVideoInfo')
-        if 'playInfos' in currentVideoInfo:
-            m3u8_url = currentVideoInfo['playInfos'][0]['playUrls'][0]
-        elif 'ksPlayJson' in currentVideoInfo:
-            ksPlayJson = json.loads( currentVideoInfo['ksPlayJson'] )
-            representation = ksPlayJson.get('adaptationSet').get('representation')
-            reps = []
-            for one in representation:
-                reps.append( (one['width']* one['height'], one['url'], one['backupUrl']) )
-            m3u8_url = max(reps)[1]
-
-    elif re.match("https?://[^\.]*\.*acfun\.[^\.]+/bangumi/aa(\d+)", url):
-        html = get_content(url, headers=fake_headers)
-        tag_script = match1(html, r'<script>window\.pageInfo([^<]+)</script>')
-        json_text = tag_script[tag_script.find('{') : tag_script.find('};') + 1]
-        json_data = json.loads(json_text)
-        title = json_data['bangumiTitle'] + " " + json_data['episodeName'] + " " + json_data['title']
-        vid = str(json_data['videoId'])
-        up = "acfun"
-
-        play_info = get_content("https://www.acfun.cn/rest/pc-direct/play/playInfo/m3u8Auto?videoId=" + vid, headers=fake_headers)
-        play_url = json.loads(play_info)['playInfo']['streams'][0]['playUrls'][0]
-        m3u8_all_qualities_file = get_content(play_url)
-        m3u8_all_qualities_lines = m3u8_all_qualities_file.split('#EXT-X-STREAM-INF:')[1:]
-        highest_quality_line = m3u8_all_qualities_lines[0]
-        for line in m3u8_all_qualities_lines:
-            bandwith = int(match1(line, r'BANDWIDTH=(\d+)'))
-            if bandwith > int(match1(highest_quality_line, r'BANDWIDTH=(\d+)')):
-                highest_quality_line = line
-        #TODO: 应由用户指定清晰度
-        m3u8_url = match1(highest_quality_line, r'\n([^#\n]+)$')
-        m3u8_url = play_url[:play_url.rfind("/")+1] + m3u8_url
-
-    else:
-        raise NotImplemented
-
-    assert title and m3u8_url
-    title = unescape_html(title)
-    title = escape_file_path(title)
-    p_title = r1('active">([^<]+)', html)
-    title = '%s (%s)' % (title, up)
-    if p_title:
-        title = '%s - %s' % (title, p_title)
-
-    print_info(site_info, title, 'm3u8', float('inf'))
-    if not info_only:
-        download_url_ffmpeg(m3u8_url, title, 'mp4', output_dir=output_dir, merge=merge)
-
+            download_url_ffmpeg(m3u8_url, title, 'mp4', output_dir=output_dir, merge=merge)
 
+site = AcFun()
 site_info = "AcFun.cn"
-download = acfun_download
+download = site.download_by_url
 download_playlist = playlist_not_supported('acfun')
diff --git a/src/you_get/extractors/baidu.py b/src/you_get/extractors/baidu.py
index 521d5e99..61b0ad24 100644
--- a/src/you_get/extractors/baidu.py
+++ b/src/you_get/extractors/baidu.py
@@ -116,7 +116,7 @@ def baidu_download(url, output_dir='.', stream_type=None, merge=True, info_only=
         id = r1(r'https?://music.baidu.com/album/(\d+)', url)
         baidu_download_album(id, output_dir, merge, info_only)
 
-    elif re.match('https?://music.baidu.com/song/\d+', url):
+    elif re.match(r'https?://music.baidu.com/song/\d+', url):
         id = r1(r'https?://music.baidu.com/song/(\d+)', url)
         baidu_download_song(id, output_dir, merge, info_only)
 
diff --git a/src/you_get/extractors/bilibili.py b/src/you_get/extractors/bilibili.py
index 620b0ff5..fb544447 100644
--- a/src/you_get/extractors/bilibili.py
+++ b/src/you_get/extractors/bilibili.py
@@ -1,16 +1,23 @@
 #!/usr/bin/env python
 
-import math
 from ..common import *
 from ..extractor import VideoExtractor
 
 import hashlib
+import math
+
 
 class Bilibili(VideoExtractor):
     name = "Bilibili"
 
     # Bilibili media encoding options, in descending quality order.
     stream_types = [
+        {'id': 'hdflv2_8k', 'quality': 127, 'audio_quality': 30280,
+         'container': 'FLV', 'video_resolution': '4320p', 'desc': '超高清 8K'},
+        {'id': 'hdflv2_dolby', 'quality': 126, 'audio_quality': 30280,
+         'container': 'FLV', 'video_resolution': '3840p', 'desc': '杜比视界'},
+        {'id': 'hdflv2_hdr', 'quality': 125, 'audio_quality': 30280,
+         'container': 'FLV', 'video_resolution': '2160p', 'desc': '真彩 HDR'},
         {'id': 'hdflv2_4k', 'quality': 120, 'audio_quality': 30280,
          'container': 'FLV', 'video_resolution': '2160p', 'desc': '超清 4K'},
         {'id': 'flv_p60', 'quality': 116, 'audio_quality': 30280,
@@ -35,6 +42,8 @@ class Bilibili(VideoExtractor):
         {'id': 'jpg', 'quality': 0},
     ]
 
+    codecids = {7: 'AVC', 12: 'HEVC', 13: 'AV1'}
+
     @staticmethod
     def height_to_quality(height, qn):
         if height <= 360 and qn <= 16:
@@ -63,7 +72,7 @@ class Bilibili(VideoExtractor):
 
     @staticmethod
     def bilibili_api(avid, cid, qn=0):
-        return 'https://api.bilibili.com/x/player/playurl?avid=%s&cid=%s&qn=%s&type=&otype=json&fnver=0&fnval=16' % (avid, cid, qn)
+        return 'https://api.bilibili.com/x/player/playurl?avid=%s&cid=%s&qn=%s&type=&otype=json&fnver=0&fnval=4048&fourk=1' % (avid, cid, qn)
 
     @staticmethod
     def bilibili_audio_api(sid):
@@ -91,7 +100,8 @@ class Bilibili(VideoExtractor):
         appkey, sec = ''.join([chr(ord(i) + 2) for i in entropy[::-1]]).split(':')
         params = 'appkey=%s&cid=%s&otype=json&qn=%s&quality=%s&type=' % (appkey, cid, qn, qn)
         chksum = hashlib.md5(bytes(params + sec, 'utf8')).hexdigest()
-        return 'https://interface.bilibili.com/v2/playurl?%s&sign=%s' % (params, chksum)
+        return 'https://api.bilibili.com/x/player/wbi/v2?%s&sign=%s' % (params, chksum)
+
 
     @staticmethod
     def bilibili_live_api(cid):
@@ -109,13 +119,21 @@ class Bilibili(VideoExtractor):
     def bilibili_space_channel_api(mid, cid, pn=1, ps=100):
         return 'https://api.bilibili.com/x/space/channel/video?mid=%s&cid=%s&pn=%s&ps=%s&order=0&jsonp=jsonp' % (mid, cid, pn, ps)
 
+    @staticmethod
+    def bilibili_space_collection_api(mid, cid, pn=1, ps=30):
+        return 'https://api.bilibili.com/x/polymer/space/seasons_archives_list?mid=%s&season_id=%s&sort_reverse=false&page_num=%s&page_size=%s' % (mid, cid, pn, ps)
+
+    @staticmethod
+    def bilibili_series_archives_api(mid, sid, pn=1, ps=100):
+        return 'https://api.bilibili.com/x/series/archives?mid=%s&series_id=%s&pn=%s&ps=%s&only_normal=true&sort=asc&jsonp=jsonp' % (mid, sid, pn, ps)
+
     @staticmethod
     def bilibili_space_favlist_api(fid, pn=1, ps=20):
         return 'https://api.bilibili.com/x/v3/fav/resource/list?media_id=%s&pn=%s&ps=%s&order=mtime&type=0&tid=0&jsonp=jsonp' % (fid, pn, ps)
 
     @staticmethod
-    def bilibili_space_video_api(mid, pn=1, ps=100):
-        return 'https://space.bilibili.com/ajax/member/getSubmitVideos?mid=%s&page=%s&pagesize=%s&order=0&jsonp=jsonp' % (mid, pn, ps)
+    def bilibili_space_video_api(mid, pn=1, ps=50):
+        return "https://api.bilibili.com/x/space/arc/search?mid=%s&pn=%s&ps=%s&tid=0&keyword=&order=pubdate&jsonp=jsonp" % (mid, pn, ps)
 
     @staticmethod
     def bilibili_vc_api(video_id):
@@ -132,10 +150,10 @@ class Bilibili(VideoExtractor):
         except:
             return err_value
 
-    # https://api.bilibili.com/x/player.so?id=cid%3A162260003&aid=95051759&bvid=BV1zE411T7nb&buvid=FB2BB46F-B1F3-4BDA-A589-33348940411A155830infoc
-
     def prepare(self, **kwargs):
         self.stream_qualities = {s['quality']: s for s in self.stream_types}
+        self.streams.clear()
+        self.dash_streams.clear()
 
         try:
             html_content = get_content(self.url, headers=self.bilibili_headers(referer=self.url))
@@ -154,13 +172,23 @@ class Bilibili(VideoExtractor):
         # redirect: bangumi/play/ss -> bangumi/play/ep
         # redirect: bangumi.bilibili.com/anime -> bangumi/play/ep
         elif re.match(r'https?://(www\.)?bilibili\.com/bangumi/play/ss(\d+)', self.url) or \
-             re.match(r'https?://bangumi\.bilibili\.com/anime/(\d+)/play', self.url):
+                re.match(r'https?://bangumi\.bilibili\.com/anime/(\d+)/play', self.url):
             initial_state_text = match1(html_content, r'__INITIAL_STATE__=(.*?);\(function\(\)')  # FIXME
             initial_state = json.loads(initial_state_text)
             ep_id = initial_state['epList'][0]['id']
             self.url = 'https://www.bilibili.com/bangumi/play/ep%s' % ep_id
             html_content = get_content(self.url, headers=self.bilibili_headers(referer=self.url))
 
+        # redirect: s
+        elif re.match(r'https?://(www\.)?bilibili\.com/s/(.+)', self.url):
+            self.url = 'https://www.bilibili.com/%s' % match1(self.url, r'/s/(.+)')
+            html_content = get_content(self.url, headers=self.bilibili_headers())
+
+        # redirect: festival
+        elif re.match(r'https?://(www\.)?bilibili\.com/festival/(.+)', self.url):
+            self.url = 'https://www.bilibili.com/video/%s' % match1(self.url, r'bvid=([^&]+)')
+            html_content = get_content(self.url, headers=self.bilibili_headers())
+
         # sort it out
         if re.match(r'https?://(www\.)?bilibili\.com/audio/au(\d+)', self.url):
             sort = 'audio'
@@ -172,7 +200,7 @@ class Bilibili(VideoExtractor):
             sort = 'live'
         elif re.match(r'https?://vc\.bilibili\.com/video/(\d+)', self.url):
             sort = 'vc'
-        elif re.match(r'https?://(www\.)?bilibili\.com/video/(av(\d+)|(BV(\S+)))', self.url):
+        elif re.match(r'https?://(www\.)?bilibili\.com/video/(av(\d+)|(bv(\S+))|(BV(\S+)))', self.url):
             sort = 'video'
         elif re.match(r'https?://h\.?bilibili\.com/(\d+)', self.url):
             sort = 'h'
@@ -180,35 +208,54 @@ class Bilibili(VideoExtractor):
             self.download_playlist_by_url(self.url, **kwargs)
             return
 
-        # regular av video
+        # regular video
         if sort == 'video':
             initial_state_text = match1(html_content, r'__INITIAL_STATE__=(.*?);\(function\(\)')  # FIXME
             initial_state = json.loads(initial_state_text)
 
             playinfo_text = match1(html_content, r'__playinfo__=(.*?)</script><script>')  # FIXME
             playinfo = json.loads(playinfo_text) if playinfo_text else None
+            playinfo = playinfo if playinfo and playinfo.get('code') == 0 else None
 
             html_content_ = get_content(self.url, headers=self.bilibili_headers(cookie='CURRENT_FNVAL=16'))
             playinfo_text_ = match1(html_content_, r'__playinfo__=(.*?)</script><script>')  # FIXME
             playinfo_ = json.loads(playinfo_text_) if playinfo_text_ else None
+            playinfo_ = playinfo_ if playinfo_ and playinfo_.get('code') == 0 else None
 
-            # warn if it is a multi-part video
-            pn = initial_state['videoData']['videos']
-            if pn > 1 and not kwargs.get('playlist'):
-                log.w('This is a multipart video. (use --playlist to download all parts.)')
+            if 'videoData' in initial_state:
+                # (standard video)
 
-            # set video title
-            self.title = initial_state['videoData']['title']
-            # refine title for a specific part, if it is a multi-part video
-            p = int(match1(self.url, r'[\?&]p=(\d+)') or match1(self.url, r'/index_(\d+)') or
-                    '1')  # use URL to decide p-number, not initial_state['p']
-            if pn > 1:
-                part = initial_state['videoData']['pages'][p - 1]['part']
-                self.title = '%s (P%s. %s)' % (self.title, p, part)
+                # warn if cookies are not loaded
+                if cookies is None:
+                    log.w('You will need login cookies for 720p formats or above. (use --cookies to load cookies.txt.)')
+
+                # warn if it is a multi-part video
+                pn = initial_state['videoData']['videos']
+                if pn > 1 and not kwargs.get('playlist'):
+                    log.w('This is a multipart video. (use --playlist to download all parts.)')
+
+                # set video title
+                self.title = initial_state['videoData']['title']
+                # refine title for a specific part, if it is a multi-part video
+                p = int(match1(self.url, r'[\?&]p=(\d+)') or match1(self.url, r'/index_(\d+)') or
+                        '1')  # use URL to decide p-number, not initial_state['p']
+                if pn > 1:
+                    part = initial_state['videoData']['pages'][p - 1]['part']
+                    self.title = '%s (P%s. %s)' % (self.title, p, part)
+
+                # construct playinfos
+                avid = initial_state['aid']
+                cid = initial_state['videoData']['pages'][p - 1]['cid']  # use p-number, not initial_state['videoData']['cid']
+            else:
+                # (festival video)
+
+                # set video title
+                self.title = initial_state['videoInfo']['title']
+
+                # construct playinfos
+                avid = initial_state['videoInfo']['aid']
+                cid = initial_state['videoInfo']['cid']
 
-            # construct playinfos
-            avid = initial_state['aid']
-            cid = initial_state['videoData']['pages'][p - 1]['cid']  # use p-number, not initial_state['videoData']['cid']
             current_quality, best_quality = None, None
             if playinfo is not None:
                 current_quality = playinfo['data']['quality'] or None  # 0 indicates an error, fallback to None
@@ -262,11 +309,10 @@ class Bilibili(VideoExtractor):
                 if 'dash' in playinfo['data']:
                     audio_size_cache = {}
                     for video in playinfo['data']['dash']['video']:
-                        # prefer the latter codecs!
                         s = self.stream_qualities[video['id']]
-                        format_id = 'dash-' + s['id']  # prefix
+                        format_id = f"dash-{s['id']}-{self.codecids[video['codecid']]}"  # prefix
                         container = 'mp4'  # enforce MP4 container
-                        desc = s['desc']
+                        desc = s['desc'] + ' ' + video['codecs']
                         audio_quality = s['audio_quality']
                         baseurl = video['baseUrl']
                         size = self.url_size(baseurl, headers=self.bilibili_headers(referer=self.url))
@@ -289,7 +335,7 @@ class Bilibili(VideoExtractor):
                                                             'src': [[baseurl]], 'size': size}
 
             # get danmaku
-            self.danmaku = get_content('http://comment.bilibili.com/%s.xml' % cid)
+            self.danmaku = get_content('https://comment.bilibili.com/%s.xml' % cid, headers=self.bilibili_headers(referer=self.url))
 
         # bangumi
         elif sort == 'bangumi':
@@ -368,7 +414,7 @@ class Bilibili(VideoExtractor):
                                                         'src': [[baseurl], [audio_baseurl]], 'size': size}
 
             # get danmaku
-            self.danmaku = get_content('http://comment.bilibili.com/%s.xml' % cid)
+            self.danmaku = get_content('https://comment.bilibili.com/%s.xml' % cid, headers=self.bilibili_headers(referer=self.url))
 
         # vc video
         elif sort == 'vc':
@@ -550,7 +596,7 @@ class Bilibili(VideoExtractor):
                                                         'src': [[baseurl]], 'size': size}
 
         # get danmaku
-        self.danmaku = get_content('http://comment.bilibili.com/%s.xml' % cid)
+        self.danmaku = get_content('https://comment.bilibili.com/%s.xml' % cid, headers=self.bilibili_headers(referer=self.url))
 
     def extract(self, **kwargs):
         # set UA and referer for downloading
@@ -572,21 +618,6 @@ class Bilibili(VideoExtractor):
             # extract stream with the best quality
             stream_id = self.streams_sorted[0]['id']
 
-    def formattime(t):
-        if t/10 == 0:
-            return '0'+str(t)
-        else:
-            return str(t)
-
-    def ms2time(t):
-        m = t/60000
-        t = t%60000
-        s = t/1000
-        t = t%1000
-        minsec = formattime(m)+':'+formattime(s)+'.'+str(t)
-        return minsec
-
-
     def download_playlist_by_url(self, url, **kwargs):
         self.url = url
         kwargs['playlist'] = True
@@ -599,12 +630,16 @@ class Bilibili(VideoExtractor):
         elif match1(html_content, r'<meta property="og:url" content="(https://www.bilibili.com/bangumi/play/[^"]+)"'):
             sort = 'bangumi'
         elif re.match(r'https?://(www\.)?bilibili\.com/bangumi/media/md(\d+)', self.url) or \
-            re.match(r'https?://bangumi\.bilibili\.com/anime/(\d+)', self.url):
+                re.match(r'https?://bangumi\.bilibili\.com/anime/(\d+)', self.url):
             sort = 'bangumi_md'
-        elif re.match(r'https?://(www\.)?bilibili\.com/video/(av(\d+)|BV(\S+))', self.url):
+        elif re.match(r'https?://(www\.)?bilibili\.com/video/(av(\d+)|bv(\S+)|BV(\S+))', self.url):
             sort = 'video'
         elif re.match(r'https?://space\.?bilibili\.com/(\d+)/channel/detail\?.*cid=(\d+)', self.url):
             sort = 'space_channel'
+        elif re.match(r'https?://space\.?bilibili\.com/(\d+)/channel/seriesdetail\?.*sid=(\d+)', self.url):
+            sort = 'space_channel_series'
+        elif re.match(r'https?://space\.?bilibili\.com/(\d+)/channel/collectiondetail\?.*sid=(\d+)', self.url):
+            sort = 'space_channel_collection'
         elif re.match(r'https?://space\.?bilibili\.com/(\d+)/favlist\?.*fid=(\d+)', self.url):
             sort = 'space_favlist'
         elif re.match(r'https?://space\.?bilibili\.com/(\d+)/video', self.url):
@@ -615,18 +650,26 @@ class Bilibili(VideoExtractor):
             log.e('[Error] Unsupported URL pattern.')
             exit(1)
 
-        # regular av video
+        # regular video
         if sort == 'video':
             initial_state_text = match1(html_content, r'__INITIAL_STATE__=(.*?);\(function\(\)')  # FIXME
             initial_state = json.loads(initial_state_text)
             aid = initial_state['videoData']['aid']
             pn = initial_state['videoData']['videos']
-            if pn!= len(initial_state['videoData']['pages']):#interaction video 互动视频
+
+            if pn == len(initial_state['videoData']['pages']):
+                # non-interative video
+                for pi in range(1, pn + 1):
+                    purl = 'https://www.bilibili.com/video/av%s?p=%s' % (aid, pi)
+                    self.__class__().download_by_url(purl, **kwargs)
+
+            else:
+                # interative video
                 search_node_list = []
                 download_cid_set = set([initial_state['videoData']['cid']])
                 params = {
-                        'id': 'cid:{}'.format(initial_state['videoData']['cid']),
-                        'aid': str(aid)
+                    'id': 'cid:{}'.format(initial_state['videoData']['cid']),
+                    'aid': str(aid)
                 }
                 urlcontent = get_content('https://api.bilibili.com/x/player.so?'+parse.urlencode(params), headers=self.bilibili_headers(referer='https://www.bilibili.com/video/av{}'.format(aid)))
                 graph_version = json.loads(urlcontent[urlcontent.find('<interaction>')+13:urlcontent.find('</interaction>')])['graph_version']
@@ -672,63 +715,6 @@ class Bilibili(VideoExtractor):
                                     self.streams_sorted = [dict([('itag', stream_type['itag'])] + list(self.streams[stream_type['itag']].items())) for stream_type in self.__class__.stream_types if stream_type['itag'] in self.streams]
                                 self.extract(**kwargs)
                                 self.download(**kwargs)
-            else:
-                playinfo_text = match1(html_content, r'__playinfo__=(.*?)</script><script>')  # FIXME
-                playinfo = json.loads(playinfo_text) if playinfo_text else None
-
-                html_content_ = get_content(self.url, headers=self.bilibili_headers(cookie='CURRENT_FNVAL=16'))
-                playinfo_text_ = match1(html_content_, r'__playinfo__=(.*?)</script><script>')  # FIXME
-                playinfo_ = json.loads(playinfo_text_) if playinfo_text_ else None
-                p = int(match1(self.url, r'[\?&]p=(\d+)') or match1(self.url, r'/index_(\d+)') or '1')-1
-                for pi in range(p,pn):
-                    self.prepare_by_cid(aid,initial_state['videoData']['pages'][pi]['cid'],'%s (P%s. %s)' % (initial_state['videoData']['title'], pi+1, initial_state['videoData']['pages'][pi]['part']),html_content,playinfo,playinfo_,url)
-                    tttt = self.title
-                    try:
-                        self.streams_sorted = [dict([('id', stream_type['id'])] + list(self.streams[stream_type['id']].items())) for stream_type in self.__class__.stream_types if stream_type['id'] in self.streams]
-                    except:
-                        self.streams_sorted = [dict([('itag', stream_type['itag'])] + list(self.streams[stream_type['itag']].items())) for stream_type in self.__class__.stream_types if stream_type['itag'] in self.streams]
-                    self.extract(**kwargs)
-                    self.download(**kwargs)
-                    lrcurl = "https://api.bilibili.com/x/player.so?id=cid%3A" + str(initial_state['videoData']['pages'][pi]['cid']) + "&aid=" + str(aid) + "&bvid=" +initial_state['videoData']["bvid"]+"&buvid=FB2BB46F-B1F3-4BDA-A589-33348940411A155830infoc"
-                    print("lrc url", lrcurl)
-                    # -H 'Referer: https://www.bilibili.com/video/BV1zE411T7nb'
-                    h = dict()
-                    jsonOfLrc = get_content(lrcurl, headers={"Referer": "https://www.bilibili.com/video/" + initial_state['videoData']["bvid"]})
-                    # Example line:
-                    # <subtitle>{"allow_submit":false,"lan":"","lan_doc":"","subtitles":[{"id":23916631605379079,"lan":"zh-CN","lan_doc":"中文（中国）","is_lock":false,"subtitle_url":"//i0.hdslb.com/bfs/subtitle/dfb81041cf92b5c2ebce2540cd14c9e49674f460.json"}]}</subtitle>
-                    subtitleMeta = match1(jsonOfLrc, r'<subtitle>(.*?)</subtitle>')
-                    subtitlejson = json.loads(subtitleMeta)
-                    print(subtitlejson)
-                    if len(subtitlejson["subtitles"])> 0:
-                        suburl = subtitlejson["subtitles"][0]["subtitle_url"]
-                        subjson = get_content("https:" + suburl)
-                        file = ''
-                        datas = json.loads(subjson)
-                        i = 1
-                        for data in datas['body']:
-                            start = data['from']  # 获取开始时间
-                            stop = data['to']  # 获取结束时间
-                            content = data['content']  # 获取字幕内容
-                            file += '{}\n'.format(i)  # 加入序号
-                            hour = math.floor(start) // 3600
-                            minute = (math.floor(start) - hour * 3600) // 60
-                            sec = math.floor(start) - hour * 3600 - minute * 60
-                            minisec = int(math.modf(start)[0] * 100)  # 处理开始时间
-                            file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(minisec).zfill(2)  # 将数字填充0并按照格式写入
-                            file += ' --> '
-                            hour = math.floor(stop) // 3600
-                            minute = (math.floor(stop) - hour * 3600) // 60
-                            sec = math.floor(stop) - hour * 3600 - minute * 60
-                            minisec = abs(int(math.modf(stop)[0] * 100 - 1))  # 此处减1是为了防止两个字幕同时出现
-                            file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(minisec).zfill(2)
-                            file += '\n' + content + '\n\n'  # 加入字幕文字
-                            i += 1
-                        srtfilename = '%s.srt' % get_filename(tttt)
-                        with open(os.path.join(".", srtfilename), 'w', encoding='utf-8') as f:
-                            f.write(file)  # 将数据写入文件
-
-                    # purl = 'https://www.bilibili.com/video/av%s?p=%s' % (aid, pi+1)
-                    # self.__class__().download_by_url(purl, **kwargs)
 
         elif sort == 'bangumi':
             initial_state_text = match1(html_content, r'__INITIAL_STATE__=(.*?);\(function\(\)')  # FIXME
@@ -764,6 +750,48 @@ class Bilibili(VideoExtractor):
                 url = 'https://www.bilibili.com/video/av%s' % video['aid']
                 self.__class__().download_playlist_by_url(url, **kwargs)
 
+        elif sort == 'space_channel_series':
+            m = re.match(r'https?://space\.?bilibili\.com/(\d+)/channel/seriesdetail\?.*sid=(\d+)', self.url)
+            mid, sid = m.group(1), m.group(2)
+            pn = 1
+            video_list = []
+            while True:
+                api_url = self.bilibili_series_archives_api(mid, sid, pn)
+                api_content = get_content(api_url, headers=self.bilibili_headers(referer=self.url))
+                archives_info = json.loads(api_content)
+                video_list.extend(archives_info['data']['archives'])
+                if len(video_list) < archives_info['data']['page']['total'] and len(archives_info['data']['archives']) > 0:
+                    pn += 1
+                else:
+                    break
+
+            epn, i = len(video_list), 0
+            for video in video_list:
+                i += 1; log.w('Extracting %s of %s videos ...' % (i, epn))
+                url = 'https://www.bilibili.com/video/av%s' % video['aid']
+                self.__class__().download_playlist_by_url(url, **kwargs)
+
+        elif sort == 'space_channel_collection':
+            m = re.match(r'https?://space\.?bilibili\.com/(\d+)/channel/collectiondetail\?.*sid=(\d+)', self.url)
+            mid, sid = m.group(1), m.group(2)
+            pn = 1
+            video_list = []
+            while True:
+                api_url = self.bilibili_space_collection_api(mid, sid, pn)
+                api_content = get_content(api_url, headers=self.bilibili_headers(referer=self.url))
+                archives_info = json.loads(api_content)
+                video_list.extend(archives_info['data']['archives'])
+                if len(video_list) < archives_info['data']['page']['total'] and len(archives_info['data']['archives']) > 0:
+                    pn += 1
+                else:
+                    break
+
+            epn, i = len(video_list), 0
+            for video in video_list:
+                i += 1; log.w('Extracting %s of %s videos ...' % (i, epn))
+                url = 'https://www.bilibili.com/video/av%s' % video['aid']
+                self.__class__().download_playlist_by_url(url, **kwargs)
+
         elif sort == 'space_favlist':
             m = re.match(r'https?://space\.?bilibili\.com/(\d+)/favlist\?.*fid=(\d+)', self.url)
             vmid, fid = m.group(1), m.group(2)
@@ -791,15 +819,16 @@ class Bilibili(VideoExtractor):
             api_url = self.bilibili_space_video_api(mid)
             api_content = get_content(api_url, headers=self.bilibili_headers())
             videos_info = json.loads(api_content)
-            pc = videos_info['data']['pages']
+            # pc = videos_info['data']['page']['count'] // videos_info['data']['page']['ps']
+            pc = math.ceil(videos_info['data']['page']['count'] / videos_info['data']['page']['ps'])
 
             for pn in range(1, pc + 1):
                 api_url = self.bilibili_space_video_api(mid, pn=pn)
                 api_content = get_content(api_url, headers=self.bilibili_headers())
                 videos_info = json.loads(api_content)
 
-                epn, i = len(videos_info['data']['vlist']), 0
-                for video in videos_info['data']['vlist']:
+                epn, i = len(videos_info['data']['list']['vlist']), 0
+                for video in videos_info['data']['list']['vlist']:
                     i += 1; log.w('Extracting %s of %s videos ...' % (i, epn))
                     url = 'https://www.bilibili.com/video/av%s' % video['aid']
                     self.__class__().download_playlist_by_url(url, **kwargs)
diff --git a/src/you_get/extractors/coub.py b/src/you_get/extractors/coub.py
index a71cbc18..b7becb45 100644
--- a/src/you_get/extractors/coub.py
+++ b/src/you_get/extractors/coub.py
@@ -58,7 +58,7 @@ def fix_coub_video_file(file_path):
 
 
 def get_title_and_urls(json_data):
-    title = legitimize(re.sub('[\s*]', "_", json_data['title']))
+    title = legitimize(re.sub(r'[\s*]', "_", json_data['title']))
     video_info = json_data['file_versions']['html5']['video']
     if 'high' not in video_info:
         if 'med' not in video_info:
diff --git a/src/you_get/extractors/douban.py b/src/you_get/extractors/douban.py
index 1a4a67d1..17b7a8c5 100644
--- a/src/you_get/extractors/douban.py
+++ b/src/you_get/extractors/douban.py
@@ -10,7 +10,7 @@ def douban_download(url, output_dir = '.', merge = True, info_only = False, **kw
 
     if re.match(r'https?://movie', url):
         title = match1(html, 'name="description" content="([^"]+)')
-        tid = match1(url, 'trailer/(\d+)')
+        tid = match1(url, r'trailer/(\d+)')
         real_url = 'https://movie.douban.com/trailer/video_url?tid=%s' % tid
         type, ext, size = url_info(real_url)
 
diff --git a/src/you_get/extractors/douyin.py b/src/you_get/extractors/douyin.py
index e39775f4..4b60de3c 100644
--- a/src/you_get/extractors/douyin.py
+++ b/src/you_get/extractors/douyin.py
@@ -1,6 +1,5 @@
 # coding=utf-8
 
-import re
 import json
 
 from ..common import (
@@ -10,24 +9,51 @@ from ..common import (
     fake_headers,
     download_urls,
     playlist_not_supported,
+    match1,
+    get_location,
 )
 
-
 __all__ = ['douyin_download_by_url']
 
 
+def get_value(source: dict, path):
+    try:
+        value = source
+        for key in path:
+            if type(key) is str:
+                if key in value.keys():
+                    value = value[key]
+                else:
+                    value = None
+                    break
+            elif type(key) is int:
+                if len(value) != 0:
+                    value = value[key]
+                else:
+                    value = None
+                    break
+    except:
+        value = None
+    return value
+
+
 def douyin_download_by_url(url, **kwargs):
+    # if short link, get the real url
+    if 'v.douyin.com' in url:
+        url = get_location(url)
+    aweme_id = match1(url, r'/(\d+)/?')
+    # get video info
+    video_info_api = 'https://www.douyin.com/web/api/v2/aweme/iteminfo/?item_ids={}'
+    url = video_info_api.format(aweme_id)
     page_content = get_content(url, headers=fake_headers)
-    match_rule = re.compile(r'var data = \[(.*?)\];')
-    video_info = json.loads(match_rule.findall(page_content)[0])
-    video_url = video_info['video']['play_addr']['url_list'][0]
-    # fix: https://www.douyin.com/share/video/6553248251821165832
-    # if there is no title, use desc
-    cha_list = video_info['cha_list']
-    if cha_list:
-        title = cha_list[0]['cha_name']
-    else:
-        title = video_info['desc']
+    video_info = json.loads(page_content)
+
+    # get video id and title
+    video_id = get_value(video_info, ['item_list', 0, 'video', 'vid'])
+    title = get_value(video_info, ['item_list', 0, 'desc'])
+
+    # get video play url
+    video_url = "https://aweme.snssdk.com/aweme/v1/play/?ratio=720p&line=0&video_id={}".format(video_id)
     video_format = 'mp4'
     size = url_size(video_url, faker=True)
     print_info(
diff --git a/src/you_get/extractors/embed.py b/src/you_get/extractors/embed.py
index ee539747..48092df1 100644
--- a/src/you_get/extractors/embed.py
+++ b/src/you_get/extractors/embed.py
@@ -13,7 +13,6 @@ from .qq import qq_download_by_vid
 from .sina import sina_download_by_vid
 from .tudou import tudou_download_by_id
 from .vimeo import vimeo_download_by_id
-from .yinyuetai import yinyuetai_download_by_id
 from .youku import youku_download_by_vid
 from . import iqiyi
 from . import bokecc
@@ -21,18 +20,18 @@ from . import bokecc
 """
 refer to http://open.youku.com/tools
 """
-youku_embed_patterns = [ 'youku\.com/v_show/id_([a-zA-Z0-9=]+)',
-                         'player\.youku\.com/player\.php/sid/([a-zA-Z0-9=]+)/v\.swf',
-                         'loader\.swf\?VideoIDS=([a-zA-Z0-9=]+)',
-                         'player\.youku\.com/embed/([a-zA-Z0-9=]+)',
-                         'YKU.Player\(\'[a-zA-Z0-9]+\',{ client_id: \'[a-zA-Z0-9]+\', vid: \'([a-zA-Z0-9]+)\''
+youku_embed_patterns = [ r'youku\.com/v_show/id_([a-zA-Z0-9=]+)',
+                         r'player\.youku\.com/player\.php/sid/([a-zA-Z0-9=]+)/v\.swf',
+                         r'loader\.swf\?VideoIDS=([a-zA-Z0-9=]+)',
+                         r'player\.youku\.com/embed/([a-zA-Z0-9=]+)',
+                         r'YKU.Player\(\'[a-zA-Z0-9]+\',{ client_id: \'[a-zA-Z0-9]+\', vid: \'([a-zA-Z0-9]+)\''
                        ]
 
 """
 http://www.tudou.com/programs/view/html5embed.action?type=0&amp;code=3LS_URGvl54&amp;lcode=&amp;resourceId=0_06_05_99
 """
-tudou_embed_patterns = [ 'tudou\.com[a-zA-Z0-9\/\?=\&\.\;]+code=([a-zA-Z0-9_-]+)\&',
-                         'www\.tudou\.com/v/([a-zA-Z0-9_-]+)/[^"]*v\.swf'
+tudou_embed_patterns = [ r'tudou\.com[a-zA-Z0-9\/\?=\&\.\;]+code=([a-zA-Z0-9_-]+)\&',
+                         r'www\.tudou\.com/v/([a-zA-Z0-9_-]+)/[^"]*v\.swf'
                        ]
 
 """
@@ -40,20 +39,18 @@ refer to http://open.tudou.com/wiki/video/info
 """
 tudou_api_patterns = [ ]
 
-yinyuetai_embed_patterns = [ 'player\.yinyuetai\.com/video/swf/(\d+)' ]
+iqiyi_embed_patterns = [ r'player\.video\.qiyi\.com/([^/]+)/[^/]+/[^/]+/[^/]+\.swf[^"]+tvId=(\d+)' ]
 
-iqiyi_embed_patterns = [ 'player\.video\.qiyi\.com/([^/]+)/[^/]+/[^/]+/[^/]+\.swf[^"]+tvId=(\d+)' ]
+netease_embed_patterns = [ r'(http://\w+\.163\.com/movie/[^\'"]+)' ]
 
-netease_embed_patterns = [ '(http://\w+\.163\.com/movie/[^\'"]+)' ]
+vimeo_embed_patters = [ r'player\.vimeo\.com/video/(\d+)' ]
 
-vimeo_embed_patters = [ 'player\.vimeo\.com/video/(\d+)' ]
-
-dailymotion_embed_patterns = [ 'www\.dailymotion\.com/embed/video/(\w+)' ]
+dailymotion_embed_patterns = [ r'www\.dailymotion\.com/embed/video/(\w+)' ]
 
 """
 check the share button on http://www.bilibili.com/video/av5079467/
 """
-bilibili_embed_patterns = [ 'static\.hdslb\.com/miniloader\.swf.*aid=(\d+)' ]
+bilibili_embed_patterns = [ r'static\.hdslb\.com/miniloader\.swf.*aid=(\d+)' ]
 
 
 '''
@@ -82,11 +79,6 @@ def embed_download(url, output_dir = '.', merge = True, info_only = False, **kwa
         found = True
         tudou_download_by_id(vid, title=title, output_dir=output_dir, merge=merge, info_only=info_only, **kwargs)
 
-    vids = matchall(content, yinyuetai_embed_patterns)
-    for vid in vids:
-        found = True
-        yinyuetai_download_by_id(vid, title=title, output_dir=output_dir, merge=merge, info_only=info_only, **kwargs)
-
     vids = matchall(content, iqiyi_embed_patterns)
     for vid in vids:
         found = True
diff --git a/src/you_get/extractors/flickr.py b/src/you_get/extractors/flickr.py
index 2535dd1c..79fca4ff 100644
--- a/src/you_get/extractors/flickr.py
+++ b/src/you_get/extractors/flickr.py
@@ -73,7 +73,7 @@ def get_api_key(page):
     match = match1(page, pattern_inline_api_key)
     # this happens only when the url points to a gallery page
     # that contains no inline api_key(and never makes xhr api calls)
-    # in fact this might be a better approch for getting a temporary api key
+    # in fact this might be a better approach for getting a temporary api key
     # since there's no place for a user to add custom information that may
     # misguide the regex in the homepage
     if not match:
diff --git a/src/you_get/extractors/funshion.py b/src/you_get/extractors/funshion.py
index 1f7156b5..2bb1aba0 100644
--- a/src/you_get/extractors/funshion.py
+++ b/src/you_get/extractors/funshion.py
@@ -84,7 +84,7 @@ class Funshion(VideoExtractor):
 
                 moz_ec_name = search_dict(sym_to_name, 'mozEcName')
                 push = search_dict(sym_to_name, 'push')
-                patt = '{}\.{}\("(.+?)"\)'.format(moz_ec_name, push)
+                patt = r'{}\.{}\("(.+?)"\)'.format(moz_ec_name, push)
                 ec_list = re.findall(patt, code)
                 [magic_list.append(sym_to_name[ec]) for ec in ec_list]
         return magic_list
diff --git a/src/you_get/extractors/imgur.py b/src/you_get/extractors/imgur.py
index cc5dc9fd..2726c974 100644
--- a/src/you_get/extractors/imgur.py
+++ b/src/you_get/extractors/imgur.py
@@ -13,9 +13,11 @@ class Imgur(VideoExtractor):
     ]
 
     def prepare(self, **kwargs):
+        self.ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/123.0.2420.97'
+
         if re.search(r'imgur\.com/a/', self.url):
             # album
-            content = get_content(self.url)
+            content = get_content(self.url, headers=fake_headers)
             album = match1(content, r'album\s*:\s*({.*}),') or \
                     match1(content, r'image\s*:\s*({.*}),')
             album = json.loads(album)
@@ -39,7 +41,7 @@ class Imgur(VideoExtractor):
 
         elif re.search(r'i\.imgur\.com/', self.url):
             # direct image
-            _, container, size = url_info(self.url)
+            _, container, size = url_info(self.url, faker=True)
             self.streams = {
                 'original': {
                     'src': [self.url],
@@ -51,21 +53,18 @@ class Imgur(VideoExtractor):
 
         else:
             # gallery image
-            content = get_content(self.url)
-            image = json.loads(match1(content, r'image\s*:\s*({.*}),'))
-            ext = image['ext']
+            content = get_content(self.url, headers=fake_headers)
+            url = match1(content, r'meta property="og:video"[^>]+(https?://i.imgur.com/[^"?]+)') or \
+                match1(content, r'meta property="og:image"[^>]+(https?://i.imgur.com/[^"?]+)')
+            _, container, size = url_info(url, headers={'User-Agent': fake_headers['User-Agent']})
             self.streams = {
                 'original': {
-                    'src': ['http://i.imgur.com/%s%s' % (image['hash'], ext)],
-                    'size': image['size'],
-                    'container': ext[1:]
-                },
-                'thumbnail': {
-                    'src': ['http://i.imgur.com/%ss%s' % (image['hash'], '.jpg')],
-                    'container': 'jpg'
+                    'src': [url],
+                    'size': size,
+                    'container': container
                 }
             }
-            self.title = image['title'] or image['hash']
+            self.title = r1(r'i\.imgur\.com/([^./]*)', url)
 
     def extract(self, **kwargs):
         if 'stream_id' in kwargs and kwargs['stream_id']:
diff --git a/src/you_get/extractors/instagram.py b/src/you_get/extractors/instagram.py
index 567e0dd7..b0fd6f0f 100755
--- a/src/you_get/extractors/instagram.py
+++ b/src/you_get/extractors/instagram.py
@@ -5,45 +5,37 @@ __all__ = ['instagram_download']
 from ..common import *
 
 def instagram_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
+    headers = {
+        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.2592.87',
+        'sec-fetch-mode': 'navigate'  # important
+    }
+
     url = r1(r'([^?]*)', url)
-    html = get_html(url)
+    cont = get_content(url, headers=headers)
 
-    vid = r1(r'instagram.com/p/([^/]+)', url)
-    description = r1(r'<meta property="og:title" content="([^"]*)"', html)
+    vid = r1(r'instagram.com/\w+/([^/]+)', url)
+    description = r1(r'<meta property="og:title" content="([^"]*)"', cont) or \
+        r1(r'<title>([^<]*)</title>', cont) # with logged-in cookies
     title = "{} [{}]".format(description.replace("\n", " "), vid)
-    stream = r1(r'<meta property="og:video" content="([^"]*)"', html)
-    if stream:
-        _, ext, size = url_info(stream)
 
-        print_info(site_info, title, ext, size)
-        if not info_only:
-            download_urls([stream], title, ext, size, output_dir, merge=merge)
-    else:
-        data = re.search(r'window\._sharedData\s*=\s*(.*);</script>', html)
-        info = json.loads(data.group(1))
+    appId = r1(r'"appId":"(\d+)"', cont)
+    media_id = r1(r'"media_id":"(\d+)"', cont)
+    logging.debug('appId: %s' % appId)
+    logging.debug('media_id: %s' % media_id)
 
-        if 'edge_sidecar_to_children' in info['entry_data']['PostPage'][0]['graphql']['shortcode_media']:
-            edges = info['entry_data']['PostPage'][0]['graphql']['shortcode_media']['edge_sidecar_to_children']['edges']
-            for edge in edges:
-                title = edge['node']['shortcode']
-                image_url = edge['node']['display_url']
-                if 'video_url' in edge['node']:
-                    image_url = edge['node']['video_url']
-                ext = image_url.split('?')[0].split('.')[-1]
-                size = int(get_head(image_url)['Content-Length'])
+    api_url = 'https://i.instagram.com/api/v1/media/%s/info/' % media_id
+    try:
+        api_cont = get_content(api_url, headers={**fake_headers, **{'x-ig-app-id': appId}})
+        post = json.loads(api_cont)
+    except:
+        log.wtf('[Error] Please specify a cookie file.')
 
-                print_info(site_info, title, ext, size)
-                if not info_only:
-                    download_urls(urls=[image_url],
-                                  title=title,
-                                  ext=ext,
-                                  total_size=size,
-                                  output_dir=output_dir)
-        else:
-            title = info['entry_data']['PostPage'][0]['graphql']['shortcode_media']['shortcode']
-            image_url = info['entry_data']['PostPage'][0]['graphql']['shortcode_media']['display_url']
-            if 'video_url' in info['entry_data']['PostPage'][0]['graphql']['shortcode_media']:
-                image_url =info['entry_data']['PostPage'][0]['graphql']['shortcode_media']['video_url']
+    for item in post['items']:
+        code = item['code']
+        carousel_media = item.get('carousel_media') or [item]
+        for i, media in enumerate(carousel_media):
+            title = '%s [%s]' % (code, i)
+            image_url = media['image_versions2']['candidates'][0]['url']
             ext = image_url.split('?')[0].split('.')[-1]
             size = int(get_head(image_url)['Content-Length'])
 
@@ -55,6 +47,20 @@ def instagram_download(url, output_dir='.', merge=True, info_only=False, **kwarg
                               total_size=size,
                               output_dir=output_dir)
 
+            # download videos (if any)
+            if 'video_versions' in media:
+                video_url = media['video_versions'][0]['url']
+                ext = video_url.split('?')[0].split('.')[-1]
+                size = int(get_head(video_url)['Content-Length'])
+
+                print_info(site_info, title, ext, size)
+                if not info_only:
+                    download_urls(urls=[video_url],
+                                  title=title,
+                                  ext=ext,
+                                  total_size=size,
+                                  output_dir=output_dir)
+
 site_info = "Instagram.com"
 download = instagram_download
 download_playlist = playlist_not_supported('instagram')
diff --git a/src/you_get/extractors/iqiyi.py b/src/you_get/extractors/iqiyi.py
index 3fe93209..16bf45d3 100644
--- a/src/you_get/extractors/iqiyi.py
+++ b/src/you_get/extractors/iqiyi.py
@@ -20,7 +20,7 @@ Changelog:
    use @fffonion 's method in #617.
    Add trace AVM(asasm) code in Iqiyi's encode function where the salt is put into the encode array and reassemble by RABCDasm(or WinRABCDasm),then use Fiddler to response modified file to replace the src file with its AutoResponder function ,set browser Fiddler proxy and play with !debug version! Flash Player ,finially get result in flashlog.txt(its location can be easily found in search engine).
    Code Like (without letters after #comment:),it just do the job : trace("{IQIYI_SALT}:"+salt_array.join(""))
-   ```(Postion After getTimer)
+   ```(Position After getTimer)
      findpropstrict      QName(PackageNamespace(""), "trace")
      pushstring          "{IQIYI_SALT}:" #comment for you to locate the salt
      getscopeobject      1
@@ -119,10 +119,10 @@ class Iqiyi(VideoExtractor):
         self.url = url
 
         video_page = get_content(url)
-        videos = set(re.findall(r'<a href="(http://www\.iqiyi\.com/v_[^"]+)"', video_page))
+        videos = set(re.findall(r'<a href="(?=https?:)?(//www\.iqiyi\.com/v_[^"]+)"', video_page))
 
         for video in videos:
-            self.__class__().download_by_url(video, **kwargs)
+            self.__class__().download_by_url('https:' + video, **kwargs)
 
     def prepare(self, **kwargs):
         assert self.url or self.vid
@@ -131,10 +131,10 @@ class Iqiyi(VideoExtractor):
             html = get_html(self.url)
             tvid = r1(r'#curid=(.+)_', self.url) or \
                    r1(r'tvid=([^&]+)', self.url) or \
-                   r1(r'data-player-tvid="([^"]+)"', html) or r1(r'tv(?:i|I)d=(.+?)\&', html) or r1(r'param\[\'tvid\'\]\s*=\s*"(.+?)"', html)
+                   r1(r'data-player-tvid="([^"]+)"', html) or r1(r'tv(?:i|I)d=(\w+?)\&', html) or r1(r'param\[\'tvid\'\]\s*=\s*"(.+?)"', html)
             videoid = r1(r'#curid=.+_(.*)$', self.url) or \
                       r1(r'vid=([^&]+)', self.url) or \
-                      r1(r'data-player-videoid="([^"]+)"', html) or r1(r'vid=(.+?)\&', html) or r1(r'param\[\'vid\'\]\s*=\s*"(.+?)"', html)
+                      r1(r'data-player-videoid="([^"]+)"', html) or r1(r'vid=(\w+?)\&', html) or r1(r'param\[\'vid\'\]\s*=\s*"(.+?)"', html)
             self.vid = (tvid, videoid)
             info_u = 'http://pcw-api.iqiyi.com/video/video/playervideoinfo?tvid=' + tvid
             json_res = get_content(info_u)
@@ -153,7 +153,7 @@ class Iqiyi(VideoExtractor):
             except Exception as e:
                 log.i("vd: {} is not handled".format(stream['vd']))
                 log.i("info is {}".format(stream))
-    
+
 
     def download(self, **kwargs):
         """Override the original one
@@ -201,10 +201,15 @@ class Iqiyi(VideoExtractor):
             if not urls:
                 log.wtf('[Failed] Cannot extract video source.')
             # For legacy main()
-            
-            #Here's the change!!
-            download_url_ffmpeg(urls[0], self.title, 'mp4', output_dir=kwargs['output_dir'], merge=kwargs['merge'], stream=False)
 
+            #Here's the change!!
+            # ffmpeg fails to parse.
+            # download_url_ffmpeg(urls[0], self.title, 'mp4', output_dir=kwargs['output_dir'], merge=kwargs['merge'], stream=False)
+            #Here's the way works out
+            urls = general_m3u8_extractor(urls[0])
+            # ffmpeg fail to convert the output video with mkv extension, due to sort of timestamp problem
+            download_urls(urls, self.title, 'mp4', 0, **kwargs)
+            
             if not kwargs['caption']:
                 print('Skipping captions.')
                 return
@@ -215,7 +220,7 @@ class Iqiyi(VideoExtractor):
                 with open(os.path.join(kwargs['output_dir'], filename),
                           'w', encoding='utf-8') as x:
                     x.write(srt)
-                print('Done.')    
+                print('Done.')
 
 '''
         if info["code"] != "A000000":
diff --git a/src/you_get/extractors/iwara.py b/src/you_get/extractors/iwara.py
index 67a41d41..37cd712a 100644
--- a/src/you_get/extractors/iwara.py
+++ b/src/you_get/extractors/iwara.py
@@ -27,6 +27,9 @@ def iwara_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
     api_url = video_url + '/api/video/' + video_hash
     content = get_content(api_url, headers=headers)
     data = json.loads(content)
+    if len(data)<1 :
+        print('Maybe is Private Video?'+'['+title+']')
+        return True;
     down_urls = 'https:' + data[0]['uri']
     type, ext, size = url_info(down_urls, headers=headers)
     print_info(site_info, title+data[0]['resolution'], type, size)
@@ -35,10 +38,8 @@ def iwara_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
         download_urls([down_urls], title, ext, size, output_dir, merge=merge, headers=headers)
 
 def download_playlist_by_url( url, **kwargs):
-    video_page = get_content(url)
-    # url_first=re.findall(r"(http[s]?://[^/]+)",url)
+    video_page = get_html(url)
     url_first=match1(url, r"(http[s]?://[^/]+)")
-    # print (url_first)
     videos = set(re.findall(r'<a href="(/videos/[^"]+)"', video_page))
     if(len(videos)>0):
         for video in videos:
diff --git a/src/you_get/extractors/ixigua.py b/src/you_get/extractors/ixigua.py
index 2f11e7f9..f2fd953e 100644
--- a/src/you_get/extractors/ixigua.py
+++ b/src/you_get/extractors/ixigua.py
@@ -18,121 +18,97 @@ headers = {
 }
 
 
-def int_overflow(val):
-    maxint = 2147483647
-    if not -maxint - 1 <= val <= maxint:
-        val = (val + (maxint + 1)) % (2 * (maxint + 1)) - maxint - 1
-    return val
-
-
-def unsigned_right_shitf(n, i):
-    if n < 0:
-        n = ctypes.c_uint32(n).value
-    if i < 0:
-        return -int_overflow(n << abs(i))
-    return int_overflow(n >> i)
-
-
-def get_video_url_from_video_id(video_id):
-    """Splicing URLs according to video ID to get video details"""
-    # from js
-    data = [""] * 256
-    for index, _ in enumerate(data):
-        t = index
-        for i in range(8):
-            t = -306674912 ^ unsigned_right_shitf(t, 1) if 1 & t else unsigned_right_shitf(t, 1)
-        data[index] = t
-
-    def tmp():
-        rand_num = random.random()
-        path = "/video/urls/v/1/toutiao/mp4/{video_id}?r={random_num}".format(video_id=video_id,
-                                                                              random_num=str(rand_num)[2:])
-        e = o = r = -1
-        i, a = 0, len(path)
-        while i < a:
-            e = ord(path[i])
-            i += 1
-            if e < 128:
-                r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ e)]
-            else:
-                if e < 2048:
-                    r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (192 | e >> 6 & 31))]
-                    r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | 63 & e))]
-                else:
-                    if 55296 <= e < 57344:
-                        e = (1023 & e) + 64
-                        i += 1
-                        o = 1023 & t.url(i)
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (240 | e >> 8 & 7))]
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | e >> 2 & 63))]
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | o >> 6 & 15 | (3 & e) << 4))]
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | 63 & o))]
-                    else:
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (224 | e >> 12 & 15))]
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | e >> 6 & 63))]
-                        r = unsigned_right_shitf(r, 8) ^ data[255 & (r ^ (128 | 63 & e))]
-
-        return "https://ib.365yg.com{path}&s={param}".format(path=path, param=unsigned_right_shitf(r ^ -1, 0))
-
-    while 1:
-        url = tmp()
-        if url.split("=")[-1][0] != "-":  # 参数s不能为负数
-            return url
-
-
-def ixigua_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
+def ixigua_download(url, output_dir='.', merge=True, info_only=False, stream_id='', **kwargs):
     # example url: https://www.ixigua.com/i6631065141750268420/#mid=63024814422
-    resp = urlopen_with_retry(request.Request(url))
+    headers['cookie'] = "MONITOR_WEB_ID=7892c49b-296e-4499-8704-e47c1b15123; " \
+                        "ixigua-a-s=1; ttcid=af99669b6304453480454f1507011d5c234; BD_REF=1; " \
+                        "__ac_nonce=060d88ff000a75e8d17eb; __ac_signature=_02B4Z6wo100f01kX9ZpgAAIDAKIBBQUIPYT5F2WIAAPG2ad; " \
+                        "ttwid=1%7CcIsVF_3vqSIk4XErhPB0H2VaTxT0tdsTMRbMjrJOPN8%7C1624806049%7C08ce7dd6f7d20506a41ba0a331ef96a6505d96731e6ad9f6c8c709f53f227ab1; "
+
+    resp = urlopen_with_retry(request.Request(url, headers=headers))
     html = resp.read().decode('utf-8')
 
     _cookies = []
     for c in resp.getheader('Set-Cookie').split("httponly,"):
         _cookies.append(c.strip().split(' ')[0])
-    headers['cookie'] = ' '.join(_cookies)
+    headers['cookie'] += ' '.join(_cookies)
 
-    conf = loads(match1(html, r"window\.config = (.+);"))
-    if not conf:
-        log.e("Get window.config from url failed, url: {}".format(url))
+    match_txt = match1(html, r"<script id=\"SSR_HYDRATED_DATA\">window._SSR_HYDRATED_DATA=(.*?)<\/script>")
+    if not match_txt:
+        log.e("Get video info from url failed, url: {}".format(url))
         return
-    verify_url = conf['prefix'] + conf['url'] + '?key=' + conf['key'] + '&psm=' + conf['psm'] \
-        + '&_signature=' + ''.join(random.sample(string.ascii_letters + string.digits, 31))
-    try:
-        ok = get_content(verify_url)
-    except Exception as e:
-        ok = e.msg
-    if ok != 'OK':
-        log.e("Verify failed, verify_url: {}, result: {}".format(verify_url, ok))
+    video_info = loads(match_txt.replace('":undefined', '":null'))
+    if not video_info:
+        log.e("video_info not found, url:{}".format(url))
         return
-    html = get_content(url, headers=headers)
 
-    video_id = match1(html, r"\"vid\":\"([^\"]+)")
-    title = match1(html, r"\"player__videoTitle\">.*?<h1.*?>(.*)<\/h1><\/div>")
-    if not video_id:
-        log.e("video_id not found, url:{}".format(url))
+    title = video_info['anyVideo']['gidInformation']['packerData']['video']['title']
+    video_resource = video_info['anyVideo']['gidInformation']['packerData']['video']['videoResource']
+    if video_resource.get('dash', None):
+        video_list = video_resource['dash']
+    elif video_resource.get('dash_120fps', None):
+        video_list = video_resource['dash_120fps']
+    elif video_resource.get('normal', None):
+        video_list = video_resource['normal']
+    else:
+        log.e("video_list not found, url:{}".format(url))
         return
-    video_info_url = get_video_url_from_video_id(video_id)
-    video_info = loads(get_content(video_info_url))
-    if video_info.get("code", 1) != 0:
-        log.e("Get video info from {} error: server return code {}".format(video_info_url, video_info.get("code", 1)))
-        return
-    if not video_info.get("data", None):
-        log.e("Get video info from {} error: The server returns JSON value"
-              " without data or data is empty".format(video_info_url))
-        return
-    if not video_info["data"].get("video_list", None):
-        log.e("Get video info from {} error: The server returns JSON value"
-              " without data.video_list or data.video_list is empty".format(video_info_url))
-        return
-    if not video_info["data"]["video_list"].get("video_1", None):
-        log.e("Get video info from {} error: The server returns JSON value"
-              " without data.video_list.video_1 or data.video_list.video_1 is empty".format(video_info_url))
-        return
-    bestQualityVideo = list(video_info["data"]["video_list"].keys())[-1] #There is not only video_1, there might be video_2
-    size = int(video_info["data"]["video_list"][bestQualityVideo]["size"])
-    print_info(site_info=site_info, title=title, type="mp4", size=size)  # 该网站只有mp4类型文件
-    if not info_only:
-        video_url = base64.b64decode(video_info["data"]["video_list"][bestQualityVideo]["main_url"].encode("utf-8"))
-        download_urls([video_url.decode("utf-8")], title, "mp4", size, output_dir, merge=merge, headers=headers, **kwargs)
+
+    streams = [
+        # {'file_id': 'fc1b9bf8e8e04a849d90a5172d3f6919', 'quality': "normal", 'size': 0,
+        #  'definition': '720p', 'video_url': '','audio_url':'','v_type':'dash'},
+    ]
+    # 先用无水印的视频与音频合成，没有的话，再直接用有水印的mp4
+    if video_list.get('dynamic_video', None):
+        audio_url = base64.b64decode(
+            video_list['dynamic_video']['dynamic_audio_list'][0]['main_url'].encode("utf-8")).decode("utf-8")
+        dynamic_video_list = video_list['dynamic_video']['dynamic_video_list']
+        streams = convertStreams(dynamic_video_list, audio_url)
+    elif video_list.get('video_list', None):
+        dynamic_video_list = video_list['video_list']
+        streams = convertStreams(dynamic_video_list, "")
+
+    print("title:          %s" % title)
+    for stream in streams:
+        if stream_id != "" and stream_id != stream['definition']:
+            continue
+
+        print("    - format:        %s" % stream['definition'])
+        print("      size:          %s MiB (%s bytes)" % (round(stream['size'] / 1048576, 1), stream['size']))
+        print("      quality:       %s " % stream['quality'])
+        print("      v_type:        %s " % stream['v_type'])
+        # print("      video_url:          %s " % stream['video_url'])
+        # print("      audio_url:          %s " % stream['audio_url'])
+        print()
+
+        # 不是只看信息的话，就下载第一个
+        if not info_only:
+            urls = [stream['video_url']]
+            if stream['audio_url'] != "":
+                urls.append(stream['audio_url'])
+                kwargs['av'] = 'av'  # 这将会合并音视频
+
+            download_urls(urls, title, "mp4", stream['size'], output_dir, merge=merge, headers=headers,
+                          **kwargs)
+            return
+
+
+def convertStreams(video_list, audio_url):
+    streams = []
+    if type(video_list) == dict:
+        video_list = video_list.values()
+    for dynamic_video in video_list:
+        streams.append({
+            'file_id': dynamic_video['file_hash'],
+            'quality': dynamic_video['quality'],
+            'size': dynamic_video['size'],
+            'definition': dynamic_video['definition'],
+            'video_url': base64.b64decode(dynamic_video['main_url'].encode("utf-8")).decode("utf-8"),
+            'audio_url': audio_url,
+            'v_type': dynamic_video['vtype'],
+        })
+
+    return streams
 
 
 def ixigua_download_playlist_by_url(url, output_dir='.', merge=True, info_only=False, **kwargs):
diff --git a/src/you_get/extractors/ku6.py b/src/you_get/extractors/ku6.py
index c827eafd..d37d8947 100644
--- a/src/you_get/extractors/ku6.py
+++ b/src/you_get/extractors/ku6.py
@@ -50,7 +50,7 @@ def ku6_download(url, output_dir = '.', merge = True, info_only = False, **kwarg
             vid = vid.group(1)
         else:
             raise Exception('Unsupported url')
-        this_meta = re.search('"?'+vid+'"?:\{(.+?)\}', meta)
+        this_meta = re.search('"?'+vid+r'"?:\{(.+?)\}', meta)
         if this_meta is not None:
             this_meta = this_meta.group(1)
             title = re.search('title:"(.+?)"', this_meta).group(1)
diff --git a/src/you_get/extractors/kugou.py b/src/you_get/extractors/kugou.py
index 192bd809..18b342bf 100644
--- a/src/you_get/extractors/kugou.py
+++ b/src/you_get/extractors/kugou.py
@@ -32,8 +32,8 @@ def kugou_download(url, output_dir=".", merge=True, info_only=False, **kwargs):
 def kugou_download_by_hash(url, output_dir='.', merge=True, info_only=False):
     # sample
     # url_sample:http://www.kugou.com/song/#hash=93F7D2FC6E95424739448218B591AEAF&album_id=9019462
-    hash_val = match1(url, 'hash=(\w+)')
-    album_id = match1(url, 'album_id=(\d+)')
+    hash_val = match1(url, r'hash=(\w+)')
+    album_id = match1(url, r'album_id=(\d+)')
     if not album_id:
         album_id = 123
     html = get_html("http://www.kugou.com/yy/index.php?r=play/getdata&hash={}&album_id={}&mid=123".format(hash_val, album_id))
@@ -60,7 +60,7 @@ def kugou_download_playlist(url, output_dir='.', merge=True, info_only=False, **
         res = pattern.findall(html)
         for song in res:
             res = get_html(song)
-            pattern_url = re.compile('"hash":"(\w+)".*"album_id":(\d)+')
+            pattern_url = re.compile(r'"hash":"(\w+)".*"album_id":(\d)+')
             hash_val, album_id = res = pattern_url.findall(res)[0]
             if not album_id:
                 album_id = 123
@@ -70,7 +70,7 @@ def kugou_download_playlist(url, output_dir='.', merge=True, info_only=False, **
     # album sample:   http://www.kugou.com/yy/album/single/1645030.html
     elif url.lower().find('album') != -1:
         html = get_html(url)
-        pattern = re.compile('var data=(\[.*?\]);')
+        pattern = re.compile(r'var data=(\[.*?\]);')
         res = pattern.findall(html)[0]
         for v in json.loads(res):
             urls.append('http://www.kugou.com/song/#hash=%s&album_id=%s' % (v['hash'], v['album_id']))
@@ -79,7 +79,7 @@ def kugou_download_playlist(url, output_dir='.', merge=True, info_only=False, **
     # playlist sample:http://www.kugou.com/yy/special/single/487279.html
     else:
         html = get_html(url)
-        pattern = re.compile('data="(\w+)\|(\d+)"')
+        pattern = re.compile(r'data="(\w+)\|(\d+)"')
         for v in pattern.findall(html):
             urls.append('http://www.kugou.com/song/#hash=%s&album_id=%s' % (v[0], v[1]))
             print('http://www.kugou.com/song/#hash=%s&album_id=%s' % (v[0], v[1]))
diff --git a/src/you_get/extractors/kuwo.py b/src/you_get/extractors/kuwo.py
index 54c09235..dceab68f 100644
--- a/src/you_get/extractors/kuwo.py
+++ b/src/you_get/extractors/kuwo.py
@@ -18,7 +18,7 @@ def kuwo_download_by_rid(rid, output_dir = '.', merge = True, info_only = False)
 
 def kuwo_playlist_download(url, output_dir = '.', merge = True, info_only = False, **kwargs):
     html=get_content(url)
-    matched=set(re.compile("yinyue/(\d+)").findall(html))#reduce duplicated
+    matched=set(re.compile(r"yinyue/(\d+)").findall(html))#reduce duplicated
     for rid in matched:
         kuwo_download_by_rid(rid,output_dir,merge,info_only)
 
@@ -26,7 +26,7 @@ def kuwo_playlist_download(url, output_dir = '.', merge = True, info_only = Fals
 
 def kuwo_download(url, output_dir = '.', merge = True, info_only = False, **kwargs):
     if "www.kuwo.cn/yinyue" in url:
-        rid=match1(url,'yinyue/(\d+)')
+        rid=match1(url, r'yinyue/(\d+)')
         kuwo_download_by_rid(rid,output_dir, merge, info_only)
     else:
         kuwo_playlist_download(url,output_dir,merge,info_only)
diff --git a/src/you_get/extractors/lrts.py b/src/you_get/extractors/lrts.py
new file mode 100644
index 00000000..94d12a25
--- /dev/null
+++ b/src/you_get/extractors/lrts.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+__all__ = ['lrts_download']
+
+import logging
+from ..common import *
+from ..util import log, term
+
+def lrts_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
+    html = get_html(url)
+    args = kwargs.get('args')
+    if not args: args = {}
+    matched = re.search(r"/book/(\d+)", url)
+    if not matched:
+        raise AssertionError("not found book number: %s" % url)
+    book_no = matched.group(1)
+    book_title = book_no
+    matched = re.search(r"<title>([^-]*)[-](.*)[,](.*)</title>", html)
+    if matched:
+        book_title = matched.group(1)
+
+    matched = re.search(r"var totalCount='(\d+)'", html)
+    if not matched:
+        raise AssertionError("not found total count in html")
+    total_count = int(matched.group(1))
+    log.i('%s total: %s' % (book_title, total_count))
+    first_page = 0
+    if ('first' in args and args.first!= None):
+        first_page = int(args.first)
+
+    page_size = 10
+    if ('page_size' in args and args.page_size != None):
+        page_size = int(args.page_size)
+    last_page = (total_count // page_size) + 1
+    if ('last' in args and args.last != None):
+        last_page = int(args.last)
+
+    log.i('page size is %s, page from %s to %s' % (page_size, first_page, last_page))
+    headers = {
+      'Referer': url
+    }
+    items = []
+    for page in range(first_page, last_page):
+        page_url = 'http://www.lrts.me/ajax/book/%s/%s/%s' % (book_no, page, page_size)
+        response_content = json.loads(post_content(page_url, headers))
+        if response_content['status'] != 'success':
+            raise AssertionError("got the page failed: %s" % (page_url))
+        data = response_content['data']['data']
+        if data:
+            for i in data:
+                i['resName'] = parse.unquote(i['resName'])
+            items.extend(data)
+        else:
+            break
+    headers = {
+      'Referer': 'http://www.lrts.me/playlist'
+    }
+
+    for item in items:
+        i_url = 'http://www.lrts.me/ajax/path/4/%s/%s' % (item['fatherResId'], item['resId'])
+        response_content = json.loads(post_content(i_url, headers))
+        if response_content['status'] == 'success' and response_content['data']:
+            item['ok'] = True
+            item['url'] = response_content['data']
+            logging.debug('ok')
+
+    items = list(filter(lambda i: 'ok' in i and i['ok'], items))
+    log.i('Downloading %s: %s count ...' % (book_title, len(items)))
+
+    for item in items:
+        title = item['resName']
+        file_url = item['url']
+        # if not file_url: continue
+        _, _, size = url_info(file_url)
+        print_info(site_info, title, 'mp3', size)
+        if not info_only:
+            download_urls([file_url], title, 'mp3', size, output_dir, merge=merge)
+
+site_info = "lrts.me"
+download = lrts_download
+download_playlist = lrts_download
diff --git a/src/you_get/extractors/mgtv.py b/src/you_get/extractors/mgtv.py
index 657167a6..f241ba6f 100644
--- a/src/you_get/extractors/mgtv.py
+++ b/src/you_get/extractors/mgtv.py
@@ -9,87 +9,130 @@ from urllib.parse import urlsplit
 from os.path import dirname
 import re
 
+import base64
+import time
+import uuid
+
+
 class MGTV(VideoExtractor):
     name = "芒果 (MGTV)"
 
     # Last updated: 2016-11-13
     stream_types = [
+        {'id': 'fhd', 'container': 'ts', 'video_profile': '蓝光'},
         {'id': 'hd', 'container': 'ts', 'video_profile': '超清'},
         {'id': 'sd', 'container': 'ts', 'video_profile': '高清'},
         {'id': 'ld', 'container': 'ts', 'video_profile': '标清'},
     ]
-    
-    id_dic = {i['video_profile']:(i['id']) for i in stream_types}
-    
-    api_endpoint = 'http://pcweb.api.mgtv.com/player/video?video_id={video_id}'
+
+    id_dic = {i['video_profile']: (i['id']) for i in stream_types}
+
+    did = str(uuid.uuid4())
+    ver = '0.3.0301'
+    pno = '1030'
+
+    def tk2(self):
+        return base64.urlsafe_b64encode(b'did=%s|ver=%s|pno=%s|clit=%d' % (
+            self.did.encode(), self.ver.encode(), self.pno.encode(), time.time())).decode('utf-8')[::-1]
+
+    info_endpoint = 'https://pcweb.api.mgtv.com/video/info?vid={video_id}'
+    player_endpoint = 'https://pcweb.api.mgtv.com/player/video?did={did}&tk2={tk2}&video_id={video_id}'
+    source_endpoint = 'https://pcweb.api.mgtv.com/player/getSource?tk2={tk2}&pm2={pm2}&video_id={video_id}'
+    playlist_endpoint = 'https://pcweb.api.mgtv.com/episode/list?video_id={video_id}&page={page}&size=30'
 
     @staticmethod
     def get_vid_from_url(url):
         """Extracts video ID from URL.
         """
-        vid = match1(url, 'https?://www.mgtv.com/(?:b|l)/\d+/(\d+).html')
+        vid = match1(url, r'https?://www.mgtv.com/(?:b|l)/\d+/(\d+).html')
         if not vid:
-            vid = match1(url, 'https?://www.mgtv.com/hz/bdpz/\d+/(\d+).html')
+            vid = match1(url, r'https?://www.mgtv.com/hz/bdpz/\d+/(\d+).html')
+        if not vid:
+            vid = match1(url, r'https?://www.mgtv.com/s/(\d+).html')
         return vid
-    
-    #----------------------------------------------------------------------
-    @staticmethod
-    def get_mgtv_real_url(url):
+
+    # ----------------------------------------------------------------------
+    def get_mgtv_real_url(self, url):
         """str->list of str
         Give you the real URLs."""
         content = loads(get_content(url))
         m3u_url = content['info']
         split = urlsplit(m3u_url)
-        
-        base_url = "{scheme}://{netloc}{path}/".format(scheme = split[0],
-                                                      netloc = split[1],
-                                                      path = dirname(split[2]))
 
-        content = get_content(content['info'])  #get the REAL M3U url, maybe to be changed later?
+        base_url = "{scheme}://{netloc}{path}/".format(scheme=split[0],
+                                                       netloc=split[1],
+                                                       path=dirname(split[2]))
+
+        content = get_content(content['info'],
+                              headers={'Referer': self.url})  # get the REAL M3U url, maybe to be changed later?
         segment_list = []
         segments_size = 0
         for i in content.split():
-            if not i.startswith('#'):  #not the best way, better we use the m3u8 package
+            if not i.startswith('#'):  # not the best way, better we use the m3u8 package
                 segment_list.append(base_url + i)
             # use ext-info for fast size calculate
             elif i.startswith('#EXT-MGTV-File-SIZE:'):
-                segments_size += int(i[i.rfind(':')+1:])
+                segments_size += int(i[i.rfind(':') + 1:])
 
         return m3u_url, segments_size, segment_list
 
     def download_playlist_by_url(self, url, **kwargs):
-        pass
+        self.url = url
+        self.vid = self.get_vid_from_url(self.url)
+        content_playlist = get_content(self.playlist_endpoint.format(video_id=self.vid, page=1))
+        content_playlist = loads(content_playlist)
+        for ep in content_playlist['data']['list']:
+            self.download_by_url('https://www.mgtv.com' + ep['url'], **kwargs)
+        max_page = content_playlist['data']['total_page']
+        for page in range(2, max_page + 1):
+            content_playlist = get_content(self.playlist_endpoint.format(video_id=self.vid, page=page))
+            content_playlist = loads(content_playlist)
+            for ep in content_playlist['data']['list']:
+                self.download_by_url('https://www.mgtv.com' + ep['url'], **kwargs)
 
     def prepare(self, **kwargs):
         if self.url:
             self.vid = self.get_vid_from_url(self.url)
-        content = get_content(self.api_endpoint.format(video_id = self.vid))
-        content = loads(content)
-        self.title = content['data']['info']['title']
-        domain = content['data']['stream_domain'][0]
-        
-        #stream_available = [i['name'] for i in content['data']['stream']]
+        content_info = get_content(self.info_endpoint.format(video_id=self.vid))
+        log.d(content_info)
+        content_info = loads(content_info)
+        self.title = content_info['data']['info']['videoName']
+
+        content_player = get_content(self.player_endpoint.format(did=self.did, video_id=self.vid, tk2=self.tk2()))
+        log.d(content_player)
+        content_player = loads(content_player)
+        pm2 = content_player['data']['atc']['pm2']
+
+        content_source = get_content(self.source_endpoint.format(video_id=self.vid, tk2=self.tk2(), pm2=pm2))
+        log.d(content_source)
+        content_source = loads(content_source)
+        domain = content_source['data']['stream_domain'][0]
+
+        # stream_available = [i['name'] for i in content['data']['stream']]
         stream_available = {}
-        for i in content['data']['stream']:
+        for i in content_source['data']['stream']:
             stream_available[i['name']] = i['url']
 
         for s in self.stream_types:
             if s['video_profile'] in stream_available.keys():
                 quality_id = self.id_dic[s['video_profile']]
                 url = stream_available[s['video_profile']]
-                url = domain + re.sub( r'(\&arange\=\d+)', '', url)  #Un-Hum
+                if url is None or url == '':
+                    # skip invalid profile with empty url
+                    continue
+                url = domain + re.sub(r'(\&arange\=\d+)', '', url)  # Un-Hum
                 m3u8_url, m3u8_size, segment_list_this = self.get_mgtv_real_url(url)
 
                 stream_fileid_list = []
                 for i in segment_list_this:
                     stream_fileid_list.append(os.path.basename(i).split('.')[0])
 
-            #make pieces
-            pieces = []
-            for i in zip(stream_fileid_list, segment_list_this):
-                pieces.append({'fileid': i[0], 'segs': i[1],})
+                # make pieces
+                pieces = []
+                for i in zip(stream_fileid_list, segment_list_this):
+                    pieces.append({'fileid': i[0], 'segs': i[1], })
 
-                self.streams[quality_id] = {
+                    self.streams[quality_id] = {
                         'container': s['container'],
                         'video_profile': s['video_profile'],
                         'size': m3u8_size,
@@ -97,8 +140,8 @@ class MGTV(VideoExtractor):
                         'm3u8_url': m3u8_url
                     }
 
-            if not kwargs['info_only']:
-                self.streams[quality_id]['src'] = segment_list_this
+                if not kwargs['info_only']:
+                    self.streams[quality_id]['src'] = segment_list_this
 
     def extract(self, **kwargs):
         if 'stream_id' in kwargs and kwargs['stream_id']:
@@ -132,7 +175,8 @@ class MGTV(VideoExtractor):
                 if 'index' not in kwargs:
                     self.p([])
                 else:
-                    stream_id = self.streams_sorted[0]['id'] if 'id' in self.streams_sorted[0] else self.streams_sorted[0]['itag']
+                    stream_id = self.streams_sorted[0]['id'] if 'id' in self.streams_sorted[0] else \
+                        self.streams_sorted[0]['itag']
                     self.p_i(stream_id)
 
         # default to use the best quality
@@ -148,8 +192,10 @@ class MGTV(VideoExtractor):
             else:
                 download_urls(stream_info['src'], self.title, stream_info['container'], stream_info['size'],
                               output_dir=kwargs['output_dir'],
-                              merge=kwargs.get('merge', True))
-                              # av=stream_id in self.dash_streams)
+                              merge=kwargs.get('merge', True),
+                              headers={'Referer': self.url})
+                # av=stream_id in self.dash_streams)
+
 
 site = MGTV()
 download = site.download_by_url
diff --git a/src/you_get/extractors/miaopai.py b/src/you_get/extractors/miaopai.py
index 0ddcadba..91a301b8 100644
--- a/src/you_get/extractors/miaopai.py
+++ b/src/you_get/extractors/miaopai.py
@@ -19,7 +19,7 @@ fake_headers_mobile = {
 
 def miaopai_download_by_fid(fid, output_dir = '.', merge = False, info_only = False, **kwargs):
     '''Source: Android mobile'''
-    page_url = 'http://video.weibo.com/show?fid=' + fid + '&type=mp4'
+    page_url = 'https://video.weibo.com/show?fid=' + fid + '&type=mp4'
 
     mobile_page = get_content(page_url, headers=fake_headers_mobile)
     url = match1(mobile_page, r'<video id=.*?src=[\'"](.*?)[\'"]\W')
@@ -78,6 +78,53 @@ def miaopai_download_story(url, output_dir='.', merge=False, info_only=False, **
         download_urls([stream_url], fs.legitimize(title), ext, total_size=None, headers=fake_headers_mobile, **kwargs)
 
 
+def miaopai_download_h5api(url, output_dir='.', merge=False, info_only=False, **kwargs):
+    oid = match1(url, r'/show/(\d{4}:\w+)')
+    if oid is None:
+        oid = match1(url, r'\?fid=(\d{4}:\w+)')
+    page = "/show/%s" % oid
+    data_url = 'https://h5.video.weibo.com/api/component?%s' % parse.urlencode({
+        'page': page
+    })
+    headers = {}
+    headers.update(fake_headers_mobile)
+    headers['origin'] = 'https://h5.video.weibo.com'
+    headers['page-referer'] = page
+    headers['referer'] = 'https://h5.video.weibo.com/show/%s' % oid
+    post_data = {
+        "data": json.dumps({
+            "Component_Play_Playinfo": {"oid": oid}
+        })
+    }
+    data_content = post_content(data_url, headers=headers, post_data=post_data)
+    data = json.loads(data_content)
+    if data['msg'] != 'succ':
+        raise Exception('Weibo api returns non-success: (%s)%s'.format(data['code'], data['msg']))
+
+    play_info = data['data']['Component_Play_Playinfo']
+    title = play_info['title']
+
+    # get video formats and sort by size desc
+    video_formats = []
+    for fmt, relative_uri in play_info['urls'].items():
+        url = "https:%s" % relative_uri
+        type, ext, size = url_info(url, headers=headers)
+        video_formats.append({
+            'fmt': fmt,
+            'url': url,
+            'type': type,
+            'ext': ext,
+            'size': size,
+        })
+    video_formats.sort(key=lambda v:v['size'], reverse=True)
+    selected_video = video_formats[0]
+    video_url, ext, size = selected_video['url'], selected_video['ext'], selected_video['size']
+
+    print_info(site_info, title, ext, size)
+    if not info_only:
+        download_urls([video_url], fs.legitimize(title), ext, total_size=size, headers=headers, **kwargs)
+
+
 def miaopai_download_direct(url, output_dir='.', merge=False, info_only=False, **kwargs):
     mobile_page = get_content(url, headers=fake_headers_mobile)
     try:
@@ -108,12 +155,19 @@ def miaopai_download(url, output_dir='.', merge=False, info_only=False, **kwargs
     if re.match(r'^http[s]://.*\.weibo\.com/tv/v/(\w+)', url):
         return miaopai_download_direct(url, info_only=info_only, output_dir=output_dir, merge=merge, **kwargs)
 
+    if re.match(r'^http[s]://(.+\.)?weibo\.com/(tv/)?show/(\d{4}:\w+)', url):
+        return miaopai_download_h5api(url, info_only=info_only, output_dir=output_dir, merge=merge, **kwargs)
+
+    if re.match(r'^http[s]://(.+\.)?weibo\.com/show\?fid=(\d{4}:\w+)', url):
+        return miaopai_download_h5api(url, info_only=info_only, output_dir=output_dir, merge=merge, **kwargs)
+
     fid = match1(url, r'\?fid=(\d{4}:\w+)')
     if fid is not None:
         miaopai_download_by_fid(fid, output_dir, merge, info_only)
     elif '/p/230444' in url:
         fid = match1(url, r'/p/230444(\w+)')
         miaopai_download_by_fid('1034:'+fid, output_dir, merge, info_only)
+        pass
     else:
         mobile_page = get_content(url, headers = fake_headers_mobile)
         hit = re.search(r'"page_url"\s*:\s*"([^"]+)"', mobile_page)
diff --git a/src/you_get/extractors/missevan.py b/src/you_get/extractors/missevan.py
index c2b25a90..6d9533ce 100644
--- a/src/you_get/extractors/missevan.py
+++ b/src/you_get/extractors/missevan.py
@@ -25,6 +25,7 @@ SOFTWARE.
 import json
 import os
 import re
+import urllib.parse
 
 from ..common import get_content, urls_size, log, player, dry_run
 from ..extractor import VideoExtractor
@@ -75,17 +76,13 @@ class _Dispatcher(object):
         raise _NoMatchException()
 
 missevan_stream_types = [
-    {'id': 'source', 'quality': '源文件', 'url_json_key': 'soundurl',
-     'resource_url_fmt': 'sound/{resource_url}'},
-    {'id': '320', 'quality': '320 Kbps', 'url_json_key': 'soundurl_64'},
+    {'id': 'source', 'quality': '源文件', 'url_json_key': 'soundurl'},
     {'id': '128', 'quality': '128 Kbps', 'url_json_key': 'soundurl_128'},
-    {'id': '32', 'quality': '32 Kbps', 'url_json_key': 'soundurl_32'},
     {'id': 'covers', 'desc': '封面图', 'url_json_key': 'cover_image',
      'default_src': 'covers/nocover.png',
      'resource_url_fmt': 'covers/{resource_url}'},
-    {'id': 'coversmini', 'desc': '封面缩略图', 'url_json_key': 'cover_image',
-     'default_src': 'coversmini/nocover.png',
-     'resource_url_fmt': 'coversmini/{resource_url}'}
+    {'id': 'coversmini', 'desc': '封面缩略图', 'url_json_key': 'front_cover',
+     'default_src': 'coversmini/nocover.png'}
 ]
 
 def _get_resource_uri(data, stream_type):
@@ -103,7 +100,8 @@ def is_covers_stream(stream):
     return stream.lower() in ('covers', 'coversmini')
 
 def get_file_extension(file_path, default=''):
-    _, suffix = os.path.splitext(file_path)
+    url_parse_result = urllib.parse.urlparse(file_path)
+    _, suffix = os.path.splitext(url_parse_result.path)
     if suffix:
         # remove dot
         suffix = suffix[1:]
@@ -314,7 +312,7 @@ class MissEvan(VideoExtractor):
                 or kwargs.get('json_output'):
 
             for _, stream in self.streams.items():
-                stream['size'] = urls_size(stream['src'])
+                stream['size'] = urls_size(stream['src'], faker=True)
             return
 
         # fetch size of the selected stream only
@@ -323,7 +321,7 @@ class MissEvan(VideoExtractor):
 
         stream = self.streams[stream_id]
         if 'size' not in stream:
-            stream['size'] = urls_size(stream['src'])
+            stream['size'] = urls_size(stream['src'], faker=True)
 
     def _get_content(self, url):
         return get_content(url, headers=self.__headers)
@@ -353,7 +351,7 @@ class MissEvan(VideoExtractor):
 
     @staticmethod
     def url_resource(uri):
-        return 'https://static.missevan.com/' + uri
+        return uri if re.match(r'^https?:/{2}\w.+$', uri) else 'https://static.missevan.com/' + uri
 
 site = MissEvan()
 site_info = 'MissEvan.com'
diff --git a/src/you_get/extractors/mtv81.py b/src/you_get/extractors/mtv81.py
index b92f74bc..ef432159 100644
--- a/src/you_get/extractors/mtv81.py
+++ b/src/you_get/extractors/mtv81.py
@@ -28,7 +28,7 @@ def mtv81_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
     #
     # rtmpdump  -r 'rtmpe://cp30865.edgefcs.net/ondemand/mtviestor/_!/intlod/MTVInternational/MBUS/GeoLocals/00JP/VIAMTVI/PYC/201304/7122HVAQ4/00JPVIAMTVIPYC7122HVAQ4_640x_360_1200_m30.mp4' -o "title.mp4" --swfVfy http://media.mtvnservices.com/player/prime/mediaplayerprime.1.10.8.swf
     #
-    # because rtmpdump is unstable,may try serveral times
+    # because rtmpdump is unstable,may try several times
     #
     if not info_only:
         # import pdb
diff --git a/src/you_get/extractors/netease.py b/src/you_get/extractors/netease.py
index c7c0f666..48e6dc53 100644
--- a/src/you_get/extractors/netease.py
+++ b/src/you_get/extractors/netease.py
@@ -79,9 +79,14 @@ def netease_cloud_music_download(url, output_dir='.', merge=True, info_only=Fals
         netease_song_download(j["program"]["mainSong"], output_dir=output_dir, info_only=info_only)
 
     elif "radio" in url:
-        j = loads(get_content("http://music.163.com/api/dj/program/byradio/?radioId=%s&ids=[%s]&csrf_token=" % (rid, rid), headers={"Referer": "http://music.163.com/"}))
-        for i in j['programs']:
-            netease_song_download(i["mainSong"],output_dir=output_dir, info_only=info_only)
+        offset = 0
+        while True:
+            j = loads(get_content("http://music.163.com/api/dj/program/byradio/?radioId=%s&ids=[%s]&csrf_token=&offset=%d" % (rid, rid, offset), headers={"Referer": "http://music.163.com/"}))
+            for i in j['programs']:
+                netease_song_download(i["mainSong"], output_dir=output_dir, info_only=info_only)
+            if not j['more']:
+                break
+            offset += len(j['programs'])
 
     elif "mv" in url:
         j = loads(get_content("http://music.163.com/api/mv/detail/?id=%s&ids=[%s]&csrf_token=" % (rid, rid), headers={"Referer": "http://music.163.com/"}))
@@ -123,10 +128,10 @@ def netease_song_download(song, output_dir='.', info_only=False, playlist_prefix
                             output_dir=output_dir, info_only=info_only)
 
 def netease_download_common(title, url_best, output_dir, info_only):
-    songtype, ext, size = url_info(url_best)
+    songtype, ext, size = url_info(url_best, faker=True)
     print_info(site_info, title, songtype, size)
     if not info_only:
-        download_urls([url_best], title, ext, size, output_dir)
+        download_urls([url_best], title, ext, size, output_dir, faker=True)
 
 
 def netease_download(url, output_dir = '.', merge = True, info_only = False, **kwargs):
diff --git a/src/you_get/extractors/pptv.py b/src/you_get/extractors/pptv.py
index dacd78e4..ef25ac44 100644
--- a/src/you_get/extractors/pptv.py
+++ b/src/you_get/extractors/pptv.py
@@ -174,7 +174,7 @@ def make_url(stream):
     src = []
     for i, seg in enumerate(stream['segs']):
         url = 'http://{}/{}/{}?key={}&k={}'.format(host, i, rid, key, key_expr)
-        url += '&fpp.ver=1.3.0.4&type='
+        url += '&type=web.fpp'
         src.append(url)
     return src
 
@@ -189,17 +189,27 @@ class PPTV(VideoExtractor):
     ]
 
     def prepare(self, **kwargs):
+        headers = {
+            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) "
+                          "Chrome/69.0.3497.100 Safari/537.36"
+        }
+        self.vid = match1(self.url, r'https?://sports.pptv.com/vod/(\d+)/*')
         if self.url and not self.vid:
             if not re.match(r'https?://v.pptv.com/show/(\w+)\.html', self.url):
                 raise('Unknown url pattern')
-            page_content = get_content(self.url,{"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"})
+            page_content = get_content(self.url, headers)
+
             self.vid = match1(page_content, r'webcfg\s*=\s*{"id":\s*(\d+)')
+            if not self.vid:
+                request = urllib.request.Request(self.url, headers=headers)
+                response = urllib.request.urlopen(request)
+                self.vid = match1(response.url, r'https?://sports.pptv.com/vod/(\d+)/*')
 
         if not self.vid:
             raise('Cannot find id')
         api_url = 'http://web-play.pptv.com/webplay3-0-{}.xml'.format(self.vid)
-        api_url += '?appplt=flp&appid=pptv.flashplayer.vod&appver=3.4.2.28&type=&version=4'
-        dom = parseString(get_content(api_url,{"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"}))
+        api_url += '?type=web.fpp&param=type=web.fpp&version=4'
+        dom = parseString(get_content(api_url, headers))
         self.title, m_items, m_streams, m_segs = parse_pptv_xml(dom)
         xml_streams = merge_meta(m_items, m_streams, m_segs)
         for stream_id in xml_streams:
@@ -212,146 +222,6 @@ class PPTV(VideoExtractor):
                     'src': src
             }
 
-'''
-def constructKey(arg):
-
-    def str2hex(s):
-        r=""
-        for i in s[:8]:
-            t=hex(ord(i))[2:]
-            if len(t)==1:
-                t="0"+t
-            r+=t
-        for i in range(16):
-            r+=hex(int(15*random()))[2:]
-        return r
-
-    #ABANDONED  Because SERVER_KEY is static
-    def getkey(s):
-        #returns 1896220160
-        l2=[i for i in s]
-        l4=0
-        l3=0
-        while l4<len(l2):
-            l5=l2[l4]
-            l6=ord(l5)
-            l7=l6<<((l4%4)*8)
-            l3=l3^l7
-            l4+=1
-        return l3
-        pass
-
-    def rot(k,b): ##>>> in as3
-        if k>=0:
-            return k>>b
-        elif k<0:
-            return (2**32+k)>>b
-        pass
-
-    def lot(k,b):
-        return (k<<b)%(2**32)
-
-    #WTF?
-    def encrypt(arg1,arg2):
-        delta=2654435769
-        l3=16;
-        l4=getkey(arg2)  #1896220160
-        l8=[i for i in arg1]
-        l10=l4;
-        l9=[i for i in arg2]
-        l5=lot(l10,8)|rot(l10,24)#101056625
-        # assert l5==101056625
-        l6=lot(l10,16)|rot(l10,16)#100692230
-        # assert 100692230==l6
-        l7=lot(l10,24)|rot(l10,8)
-        # assert 7407110==l7
-        l11=""
-        l12=0
-        l13=ord(l8[l12])<<0
-        l14=ord(l8[l12+1])<<8
-        l15=ord(l8[l12+2])<<16
-        l16=ord(l8[l12+3])<<24
-        l17=ord(l8[l12+4])<<0
-        l18=ord(l8[l12+5])<<8
-        l19=ord(l8[l12+6])<<16
-        l20=ord(l8[l12+7])<<24
-
-        l21=(((0|l13)|l14)|l15)|l16
-        l22=(((0|l17)|l18)|l19)|l20
-
-        l23=0
-        l24=0
-        while l24<32:
-            l23=(l23+delta)%(2**32)
-            l33=(lot(l22,4)+l4)%(2**32)
-            l34=(l22+l23)%(2**32)
-            l35=(rot(l22,5)+l5)%(2**32)
-            l36=(l33^l34)^l35
-            l21=(l21+l36)%(2**32)
-            l37=(lot(l21,4)+l6)%(2**32)
-            l38=(l21+l23)%(2**32)
-            l39=(rot(l21,5))%(2**32)
-            l40=(l39+l7)%(2**32)
-            l41=((l37^l38)%(2**32)^l40)%(2**32)
-            l22=(l22+l41)%(2**32)
-
-            l24+=1
-
-        l11+=chr(rot(l21,0)&0xff)
-        l11+=chr(rot(l21,8)&0xff)
-        l11+=chr(rot(l21,16)&0xff)
-        l11+=chr(rot(l21,24)&0xff)
-        l11+=chr(rot(l22,0)&0xff)
-        l11+=chr(rot(l22,8)&0xff)
-        l11+=chr(rot(l22,16)&0xff)
-        l11+=chr(rot(l22,24)&0xff)
-
-        return l11
-
-
-    loc1=hex(int(arg))[2:]+(16-len(hex(int(arg))[2:]))*"\x00"
-    SERVER_KEY="qqqqqww"+"\x00"*9
-    res=encrypt(loc1,SERVER_KEY)
-    return str2hex(res)
-
-
-def pptv_download_by_id(id, title = None, output_dir = '.', merge = True, info_only = False):
-    xml = get_html('http://web-play.pptv.com/webplay3-0-%s.xml?type=web.fpp' % id)
-    #vt=3 means vod mode vt=5 means live mode
-    host = r1(r'<sh>([^<>]+)</sh>', xml)
-    k = r1(r'<key expire=[^<>]+>([^<>]+)</key>', xml)
-    rid = r1(r'rid="([^"]+)"', xml)
-    title = r1(r'nm="([^"]+)"', xml)
-
-    st=r1(r'<st>([^<>]+)</st>',xml)[:-4]
-    st=time.mktime(time.strptime(st))*1000-60*1000-time.time()*1000
-    st+=time.time()*1000
-    st=st/1000
-
-    key=constructKey(st)
-
-    pieces = re.findall('<sgm no="(\d+)"[^<>]+fs="(\d+)"', xml)
-    numbers, fs = zip(*pieces)
-    urls=["http://{}/{}/{}?key={}&fpp.ver=1.3.0.4&k={}&type=web.fpp".format(host,i,rid,key,k) for i in range(max(map(int,numbers))+1)]
-
-    total_size = sum(map(int, fs))
-    assert rid.endswith('.mp4')
-    print_info(site_info, title, 'mp4', total_size)
-
-    if not info_only:
-        try:
-            download_urls(urls, title, 'mp4', total_size, output_dir = output_dir, merge = merge)
-        except urllib.error.HTTPError:
-            #for key expired
-            pptv_download_by_id(id, output_dir = output_dir, merge = merge, info_only = info_only)
-
-def pptv_download(url, output_dir = '.', merge = True, info_only = False, **kwargs):
-    assert re.match(r'http://v.pptv.com/show/(\w+)\.html', url)
-    html = get_html(url)
-    id = r1(r'webcfg\s*=\s*{"id":\s*(\d+)', html)
-    assert id
-    pptv_download_by_id(id, output_dir = output_dir, merge = merge, info_only = info_only)
-'''
 site = PPTV()
 #site_info = "PPTV.com"
 #download = pptv_download
diff --git a/src/you_get/extractors/qingting.py b/src/you_get/extractors/qingting.py
index 9859d4be..8dd1b14f 100644
--- a/src/you_get/extractors/qingting.py
+++ b/src/you_get/extractors/qingting.py
@@ -10,7 +10,7 @@ __all__ = ['qingting_download_by_url']
 
 class Qingting(VideoExtractor):
     # every resource is described by its channel id and program id
-    # so vid is tuple (chaanel_id, program_id)
+    # so vid is tuple (channel_id, program_id)
 
     name = 'Qingting'
     stream_types = [
diff --git a/src/you_get/extractors/qq.py b/src/you_get/extractors/qq.py
index 6411b195..6cb76e1d 100644
--- a/src/you_get/extractors/qq.py
+++ b/src/you_get/extractors/qq.py
@@ -35,6 +35,7 @@ def qq_download_by_vid(vid, title, output_dir='.', merge=True, info_only=False):
 
     part_urls= []
     total_size = 0
+    ext = None
     for part in range(1, seg_cnt+1):
         if fc_cnt == 0:
             # fix json parsing error
@@ -82,7 +83,7 @@ def kg_qq_download_by_shareid(shareid, output_dir='.', info_only=False, caption=
     playurl = json_data['data']['playurl']
     videourl = json_data['data']['playurl_video']
     real_url = playurl if playurl else videourl
-    real_url = real_url.replace('\/', '/')
+    real_url = real_url.replace(r'\/', '/')
 
     ksong_mid = json_data['data']['ksong_mid']
     lyric_url = 'http://cgi.kg.qq.com/fcgi-bin/fcg_lyric?jsonpCallback=jsopgetlrcdata&outCharset=utf-8&ksongmid=' + ksong_mid
diff --git a/src/you_get/extractors/sohu.py b/src/you_get/extractors/sohu.py
index 74374202..e0e4eeb9 100644
--- a/src/you_get/extractors/sohu.py
+++ b/src/you_get/extractors/sohu.py
@@ -23,7 +23,7 @@ def real_url(fileName, key, ch):
 
 def sohu_download(url, output_dir='.', merge=True, info_only=False, extractor_proxy=None, **kwargs):
     if re.match(r'http://share.vrs.sohu.com', url):
-        vid = r1('id=(\d+)', url)
+        vid = r1(r'id=(\d+)', url)
     else:
         html = get_html(url)
         vid = r1(r'\Wvid\s*[\:=]\s*[\'"]?(\d+)[\'"]?', html) or r1(r'bid:\'(\d+)\',', html) or r1(r'bid=(\d+)', html)
diff --git a/src/you_get/extractors/soundcloud.py b/src/you_get/extractors/soundcloud.py
index ecd3fc8d..08e9d561 100644
--- a/src/you_get/extractors/soundcloud.py
+++ b/src/you_get/extractors/soundcloud.py
@@ -19,7 +19,7 @@ def get_sndcd_apikey():
 def get_resource_info(resource_url, client_id):
     cont = get_content(resource_url, decoded=True)
 
-    x = re.escape('forEach(function(e){n(e)})}catch(t){}})},')
+    x = re.escape('forEach(function(e){n(e)})}catch(e){}})},')
     x = re.search(r'' + x + r'(.*)\);</script>', cont)
 
     info = json.loads(x.group(1))[-1]['data'][0]
diff --git a/src/you_get/extractors/tiktok.py b/src/you_get/extractors/tiktok.py
index c2a0eb8d..d1d98c41 100644
--- a/src/you_get/extractors/tiktok.py
+++ b/src/you_get/extractors/tiktok.py
@@ -5,26 +5,43 @@ __all__ = ['tiktok_download']
 from ..common import *
 
 def tiktok_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
-    html = get_html(url, faker=True)
+    headers = {
+        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0',
+        'Accept-Encoding': 'gzip, deflate',
+        'Accept': '*/*',
+        'Referer': 'https://www.tiktok.com/',
+        'Connection': 'keep-alive'  # important
+    }
 
-    data = r1(r'<script id="__NEXT_DATA__".*?>(.*?)</script>', html)
+    m = re.match('(https?://)?([^/]+)(/.*)', url)
+    host = m.group(2)
+    if host != 'www.tiktok.com':  # non-canonical URL
+        if host == 'vt.tiktok.com':  # short URL
+            url = get_location(url)
+        vid = r1(r'/video/(\d+)', url)
+        url = 'https://www.tiktok.com/@/video/%s/' % vid
+        host = 'www.tiktok.com'
+    else:
+        url = m.group(3).split('?')[0]
+        vid = url.split('/')[3]  # should be a string of numbers
+
+    html, set_cookie = getHttps(host, url, headers=headers)
+    tt_chain_token = r1('tt_chain_token=([^;]+);', set_cookie)
+    headers['Cookie'] = 'tt_chain_token=%s' % tt_chain_token
+
+    data = r1(r'<script id="__UNIVERSAL_DATA_FOR_REHYDRATION__" type="application/json">(.*?)</script>', html)
     info = json.loads(data)
-    videoData = info['props']['pageProps']['videoData']
-    urls = videoData['itemInfos']['video']['urls']
-    videoId = videoData['itemInfos']['id']
-    uniqueId = videoData['authorInfos'].get('uniqueId')
-    nickName = videoData['authorInfos'].get('nickName')
+    itemStruct = info['__DEFAULT_SCOPE__']['webapp.video-detail']['itemInfo']['itemStruct']
+    downloadAddr = itemStruct['video']['downloadAddr']
+    author = itemStruct['author']['uniqueId']
+    nickname = itemStruct['author']['nickname']
+    title = '%s [%s]' % (nickname or author, vid)
 
-    for i, url in enumerate(urls):
-        title = '%s [%s]' % (nickName or uniqueId, videoId)
-        if len(urls) > 1:
-            title = '%s [%s]' % (title, i)
+    mime, ext, size = url_info(downloadAddr, headers=headers)
 
-        mime, ext, size = url_info(url)
-
-        print_info(site_info, title, mime, size)
-        if not info_only:
-            download_urls([url], title, ext, size, output_dir=output_dir, merge=merge)
+    print_info(site_info, title, mime, size)
+    if not info_only:
+        download_urls([downloadAddr], title, ext, size, output_dir=output_dir, merge=merge, headers=headers)
 
 site_info = "TikTok.com"
 download = tiktok_download
diff --git a/src/you_get/extractors/tudou.py b/src/you_get/extractors/tudou.py
index b1568dfd..92b8393c 100644
--- a/src/you_get/extractors/tudou.py
+++ b/src/you_get/extractors/tudou.py
@@ -71,7 +71,7 @@ def tudou_download(url, output_dir = '.', merge = True, info_only = False, **kwa
 
 # obsolete?
 def parse_playlist(url):
-    aid = r1('http://www.tudou.com/playlist/p/a(\d+)(?:i\d+)?\.html', url)
+    aid = r1(r'http://www.tudou.com/playlist/p/a(\d+)(?:i\d+)?\.html', url)
     html = get_decoded_html(url)
     if not aid:
         aid = r1(r"aid\s*[:=]\s*'(\d+)'", html)
diff --git a/src/you_get/extractors/tumblr.py b/src/you_get/extractors/tumblr.py
index 9a314c7f..236ba182 100644
--- a/src/you_get/extractors/tumblr.py
+++ b/src/you_get/extractors/tumblr.py
@@ -6,7 +6,6 @@ from ..common import *
 from .universal import *
 from .dailymotion import dailymotion_download
 from .vimeo import vimeo_download
-from .vine import vine_download
 
 def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
     if re.match(r'https?://\d+\.media\.tumblr\.com/', url):
@@ -14,7 +13,7 @@ def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
         return
 
     import ssl
-    ssl_context = request.HTTPSHandler(context=ssl.SSLContext(ssl.PROTOCOL_TLSv1))
+    ssl_context = request.HTTPSHandler(context=ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)) # server requires TLS v1.2
     cookie_handler = request.HTTPCookieProcessor()
     opener = request.build_opener(ssl_context, cookie_handler)
     request.install_opener(opener)
@@ -35,7 +34,7 @@ def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
                      post_data_raw='{"eu_resident":true,"gdpr_is_acceptable_age":true,"gdpr_consent_core":true,"gdpr_consent_first_party_ads":true,"gdpr_consent_third_party_ads":true,"gdpr_consent_search_history":true,"redirect_to":"%s","gdpr_reconsent":false}' % url)
         page = get_html(url, faker=True)
 
-    html = parse.unquote(page).replace('\/', '/')
+    html = parse.unquote(page).replace(r'\/', '/')
     feed = r1(r'<meta property="og:type" content="tumblr-feed:(\w+)" />', html)
 
     if feed in ['photo', 'photoset', 'entry'] or feed is None:
@@ -45,23 +44,30 @@ def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
                      r1(r'<title>([^<\n]*)', html)
         urls = re.findall(r'(https?://[^;"&]+/tumblr_[^;"&]+_\d+\.jpg)', html) +\
                re.findall(r'(https?://[^;"&]+/tumblr_[^;"&]+_\d+\.png)', html) +\
-               re.findall(r'(https?://[^;"&]+/tumblr_[^";&]+_\d+\.gif)', html)
+               re.findall(r'(https?://[^;"&]+/tumblr_[^;"&]+_\d+\.gif)', html) +\
+               re.findall(r'(https?://\d+\.media\.tumblr\.com/[^;"&]+/s\d+x\d+/[^;"&]+\.jpg)', html) +\
+               re.findall(r'(https?://\d+\.media\.tumblr\.com/[^;"&]+/s\d+x\d+/[^;"&]+\.png)', html) +\
+               re.findall(r'(https?://\d+\.media\.tumblr\.com/[^;"&]+/s\d+x\d+/[^;"&]+\.gif)', html)
 
         tuggles = {}
         for url in urls:
             if url.endswith('.gif'):
                 hd_url = url
             elif url.endswith('.jpg'):
-                hd_url = r1(r'(.+)_\d+\.jpg$', url) + '_1280.jpg' # FIXME: decide actual quality
+                hd_url = url  # FIXME: decide actual quality # r1(r'(.+)_\d+\.jpg$', url) + '_1280.jpg'
             elif url.endswith('.png'):
-                hd_url = r1(r'(.+)_\d+\.png$', url) + '_1280.png' # FIXME: decide actual quality
+                hd_url = url  # FIXME: decide actual quality # r1(r'(.+)_\d+\.png$', url) + '_1280.png'
             else:
                 continue
             filename = parse.unquote(hd_url.split('/')[-1])
             title = '.'.join(filename.split('.')[:-1])
-            tumblr_id = r1(r'^tumblr_(.+)_\d+$', title)
-            quality = int(r1(r'^tumblr_.+_(\d+)$', title))
+            tumblr_id = r1(r'^tumblr_(.+)_\d+$', title) or title
+            try:
+                quality = int(r1(r'^tumblr_.+_(\d+)$', title))
+            except:
+                quality = int(r1(r'/s(\d+)x\d+/', hd_url))
             ext = filename.split('.')[-1]
+
             try:
                 size = int(get_head(hd_url)['Content-Length'])
                 if tumblr_id not in tuggles or tuggles[tumblr_id]['quality'] < quality:
@@ -75,16 +81,16 @@ def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
             except: pass
 
         if tuggles:
-            size = sum([tuggles[t]['size'] for t in tuggles])
-            print_info(site_info, page_title, None, size)
+            #size = sum([tuggles[t]['size'] for t in tuggles])
+            #print_info(site_info, page_title, None, size)
 
-            if not info_only:
-                for t in tuggles:
-                    title = tuggles[t]['title']
-                    ext = tuggles[t]['ext']
-                    size = tuggles[t]['size']
-                    url = tuggles[t]['url']
-                    print_info(site_info, title, ext, size)
+            for t in tuggles:
+                title = '[tumblr] ' + tuggles[t]['title']
+                ext = tuggles[t]['ext']
+                size = tuggles[t]['size']
+                url = tuggles[t]['url']
+                print_info(site_info, title, ext, size)
+                if not info_only:
                     download_urls([url], title, ext, size,
                                   output_dir=output_dir)
             return
@@ -118,9 +124,6 @@ def tumblr_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
             elif re.search(r'dailymotion\.com', iframe_url):
                 dailymotion_download(iframe_url, output_dir, merge=merge, info_only=info_only, **kwargs)
                 return
-            elif re.search(r'vine\.co', iframe_url):
-                vine_download(iframe_url, output_dir, merge=merge, info_only=info_only, **kwargs)
-                return
             else:
                 iframe_html = get_content(iframe_url)
                 real_url = r1(r'<source src="([^"]*)"', iframe_html)
diff --git a/src/you_get/extractors/twitter.py b/src/you_get/extractors/twitter.py
index 602c18f6..299dc052 100644
--- a/src/you_get/extractors/twitter.py
+++ b/src/you_get/extractors/twitter.py
@@ -4,7 +4,6 @@ __all__ = ['twitter_download']
 
 from ..common import *
 from .universal import *
-from .vine import vine_download
 
 def extract_m3u(source):
     r1 = get_content(source)
@@ -23,7 +22,7 @@ def twitter_download(url, output_dir='.', merge=True, info_only=False, **kwargs)
     if re.match(r'https?://mobile', url): # normalize mobile URL
         url = 'https://' + match1(url, r'//mobile\.(.+)')
 
-    if re.match(r'https?://twitter\.com/i/moments/', url): # moments
+    if re.match(r'https?://twitter\.com/i/moments/', url): # FIXME: moments
         html = get_html(url, faker=True)
         paths = re.findall(r'data-permalink-path="([^"]+)"', html)
         for path in paths:
@@ -34,71 +33,49 @@ def twitter_download(url, output_dir='.', merge=True, info_only=False, **kwargs)
                              **kwargs)
         return
 
-    html = get_html(url, faker=False) # disable faker to prevent 302 infinite redirect
-    screen_name = r1(r'twitter\.com/([^/]+)', url) or r1(r'data-screen-name="([^"]*)"', html) or \
-        r1(r'<meta name="twitter:title" content="([^"]*)"', html)
-    item_id = r1(r'twitter\.com/[^/]+/status/(\d+)', url) or r1(r'data-item-id="([^"]*)"', html) or \
-        r1(r'<meta name="twitter:site:id" content="([^"]*)"', html)
+    m = re.match(r'^https?://(mobile\.)?(x|twitter)\.com/([^/]+)/status/(\d+)', url)
+    assert m
+    screen_name, item_id = m.group(3), m.group(4)
     page_title = "{} [{}]".format(screen_name, item_id)
 
-    authorization = 'Bearer AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA'
+    # FIXME: this API won't work for protected or nsfw contents
+    api_url = 'https://cdn.syndication.twimg.com/tweet-result?id=%s&token=!' % item_id
+    content = get_content(api_url)
+    info = json.loads(content)
 
-    ga_url = 'https://api.twitter.com/1.1/guest/activate.json'
-    ga_content = post_content(ga_url, headers={'authorization': authorization})
-    guest_token = json.loads(ga_content)['guest_token']
+    author = info['user']['name']
+    url = 'https://twitter.com/%s/status/%s' % (info['user']['screen_name'], item_id)
+    full_text = info['text']
 
-    api_url = 'https://api.twitter.com/2/timeline/conversation/%s.json?tweet_mode=extended' % item_id
-    api_content = get_content(api_url, headers={'authorization': authorization, 'x-guest-token': guest_token})
-
-    info = json.loads(api_content)
-    if 'extended_entities' in info['globalObjects']['tweets'][item_id]:
-        # if the tweet contains media, download them
-        media = info['globalObjects']['tweets'][item_id]['extended_entities']['media']
-
-    elif info['globalObjects']['tweets'][item_id].get('is_quote_status') == True:
-        # if the tweet does not contain media, but it quotes a tweet
-        # and the quoted tweet contains media, download them
-        item_id = info['globalObjects']['tweets'][item_id]['quoted_status_id_str']
-
-        api_url = 'https://api.twitter.com/2/timeline/conversation/%s.json?tweet_mode=extended' % item_id
-        api_content = get_content(api_url, headers={'authorization': authorization, 'x-guest-token': guest_token})
-
-        info = json.loads(api_content)
-
-        if 'extended_entities' in info['globalObjects']['tweets'][item_id]:
-            media = info['globalObjects']['tweets'][item_id]['extended_entities']['media']
-        else:
-            # quoted tweet has no media
-            return
-
-    else:
-        # no media, no quoted tweet
-        return
-
-    for medium in media:
-        if 'video_info' in medium:
-            # FIXME: we're assuming one tweet only contains one video here
-            variants = medium['video_info']['variants']
-            variants = sorted(variants, key=lambda kv: kv.get('bitrate', 0))
-            urls = [ variants[-1]['url'] ]
+    if 'photos' in info:
+        for photo in info['photos']:
+            photo_url = photo['url']
+            title = item_id + '_' + photo_url.split('.')[-2].split('/')[-1]
+            urls = [ photo_url + ':orig' ]
             size = urls_size(urls)
-            mime, ext = variants[-1]['content_type'], 'mp4'
-
-            print_info(site_info, page_title, mime, size)
-            if not info_only:
-                download_urls(urls, page_title, ext, size, output_dir, merge=merge)
-
-        else:
-            title = item_id + '_' + medium['media_url_https'].split('.')[-2].split('/')[-1]
-            urls = [ medium['media_url_https'] + ':orig' ]
-            size = urls_size(urls)
-            ext = medium['media_url_https'].split('.')[-1]
+            ext = photo_url.split('.')[-1]
 
             print_info(site_info, title, ext, size)
             if not info_only:
                 download_urls(urls, title, ext, size, output_dir, merge=merge)
 
+    if 'video' in info:
+        for mediaDetail in info['mediaDetails']:
+            if 'video_info' not in mediaDetail: continue
+            variants = mediaDetail['video_info']['variants']
+            variants = sorted(variants, key=lambda kv: kv.get('bitrate', 0))
+            title = item_id + '_' + variants[-1]['url'].split('/')[-1].split('?')[0].split('.')[0]
+            urls = [ variants[-1]['url'] ]
+            size = urls_size(urls)
+            mime, ext = variants[-1]['content_type'], 'mp4'
 
-site_info = "Twitter.com"
+            print_info(site_info, title, ext, size)
+            if not info_only:
+                download_urls(urls, title, ext, size, output_dir, merge=merge)
+
+    # TODO: should we deal with quoted tweets?
+
+
+site_info = "X.com"
 download = twitter_download
 download_playlist = playlist_not_supported('twitter')
diff --git a/src/you_get/extractors/universal.py b/src/you_get/extractors/universal.py
index abc69475..03bba35a 100644
--- a/src/you_get/extractors/universal.py
+++ b/src/you_get/extractors/universal.py
@@ -48,7 +48,7 @@ def universal_download(url, output_dir='.', merge=True, info_only=False, **kwarg
             else:
                 return
 
-        hls_urls = re.findall(r'(https?://[^;"\'\\]+' + '\.m3u8?' +
+        hls_urls = re.findall(r'(https?://[^;"\'\\]+' + r'\.m3u8?' +
                               r'[^;"\'\\]*)', page)
         if hls_urls:
             try:
@@ -64,18 +64,19 @@ def universal_download(url, output_dir='.', merge=True, info_only=False, **kwarg
                 return
 
         # most common media file extensions on the Internet
-        media_exts = ['\.flv', '\.mp3', '\.mp4', '\.webm',
-                      '[-_]1\d\d\d\.jpe?g', '[-_][6-9]\d\d\.jpe?g', # tumblr
-                      '[-_]1\d\d\dx[6-9]\d\d\.jpe?g',
-                      '[-_][6-9]\d\dx1\d\d\d\.jpe?g',
-                      '[-_][6-9]\d\dx[6-9]\d\d\.jpe?g',
-                      's1600/[\w%]+\.jpe?g', # blogger
-                      'img[6-9]\d\d/[\w%]+\.jpe?g' # oricon?
+        media_exts = [r'\.flv', r'\.mp3', r'\.mp4', r'\.webm',
+                      r'[-_]1\d\d\d\.jpe?g', r'[-_][6-9]\d\d\.jpe?g', # tumblr
+                      r'[-_]1\d\d\dx[6-9]\d\d\.jpe?g',
+                      r'[-_][6-9]\d\dx1\d\d\d\.jpe?g',
+                      r'[-_][6-9]\d\dx[6-9]\d\d\.jpe?g',
+                      r's1600/[\w%]+\.jpe?g', # blogger
+                      r'blogger\.googleusercontent\.com/img/a/\w*', # blogger
+                      r'img[6-9]\d\d/[\w%]+\.jpe?g' # oricon?
         ]
 
         urls = []
         for i in media_exts:
-            urls += re.findall(r'(https?://[^ ;&"\'\\<>]+' + i + r'[^ ;&"\'\\<>]*)', page)
+            urls += re.findall(r'(https?://[^ ;&"\'\\<>]*' + i + r'[^ =?;&"\'\\<>]*)', page)
 
             p_urls = re.findall(r'(https?%3A%2F%2F[^;&"]+' + i + r'[^;&"]*)', page)
             urls += [parse.unquote(url) for url in p_urls]
diff --git a/src/you_get/extractors/vimeo.py b/src/you_get/extractors/vimeo.py
index c7d7b057..4034d0e0 100644
--- a/src/you_get/extractors/vimeo.py
+++ b/src/you_get/extractors/vimeo.py
@@ -102,7 +102,7 @@ class VimeoExtractor(VideoExtractor):
         pos = 0
         while pos < len(lines):
             if lines[pos].startswith('#EXT-X-STREAM-INF'):
-                patt = 'RESOLUTION=(\d+)x(\d+)'
+                patt = r'RESOLUTION=(\d+)x(\d+)'
                 hit = re.search(patt, lines[pos])
                 if hit is None:
                     continue
@@ -132,34 +132,6 @@ class VimeoExtractor(VideoExtractor):
 
 
 def vimeo_download_by_id(id, title=None, output_dir='.', merge=True, info_only=False, **kwargs):
-    '''
-    try:
-        # normal Vimeo video
-        html = get_content('https://vimeo.com/' + id)
-        cfg_patt = r'clip_page_config\s*=\s*(\{.+?\});'
-        cfg = json.loads(match1(html, cfg_patt))
-        video_page = get_content(cfg['player']['config_url'], headers=fake_headers)
-        title = cfg['clip']['title']
-        info = loads(video_page)
-    except:
-        # embedded player - referer may be required
-        if 'referer' in kwargs:
-            fake_headers['Referer'] = kwargs['referer']
-
-        video_page = get_content('http://player.vimeo.com/video/%s' % id, headers=fake_headers)
-        title = r1(r'<title>([^<]+)</title>', video_page)
-        info = loads(match1(video_page, r'var t=(\{.+?\});'))
-
-    streams = info['request']['files']['progressive']
-    streams = sorted(streams, key=lambda i: i['height'])
-    url = streams[-1]['url']
-
-    type, ext, size = url_info(url, faker=True)
-
-    print_info(site_info, title, type, size)
-    if not info_only:
-        download_urls([url], title, ext, size, output_dir, merge=merge, faker=True)
-    '''
     site = VimeoExtractor()
     site.download_by_vid(id, info_only=info_only, output_dir=output_dir, merge=merge, **kwargs)
 
diff --git a/src/you_get/extractors/vine.py b/src/you_get/extractors/vine.py
deleted file mode 100644
index d75454cf..00000000
--- a/src/you_get/extractors/vine.py
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/usr/bin/env python
-
-__all__ = ['vine_download']
-
-from ..common import *
-import json
-
-
-def vine_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
-    html = get_content(url)
-
-    video_id = r1(r'vine.co/v/([^/]+)', url)
-    title = r1(r'<title>([^<]*)</title>', html)
-    stream = r1(r'<meta property="twitter:player:stream" content="([^"]*)">', html)
-    if not stream:  # https://vine.co/v/.../card
-        stream = r1(r'"videoUrl":"([^"]+)"', html)
-        if stream:
-            stream = stream.replace('\\/', '/')
-        else:
-            posts_url = 'https://archive.vine.co/posts/' + video_id + '.json'
-            json_data = json.loads(get_content(posts_url))
-            stream = json_data['videoDashUrl']
-            title = json_data['description']
-            if title == "":
-                title = json_data['username'].replace(" ", "_") + "_" + video_id
-
-    mime, ext, size = url_info(stream)
-
-    print_info(site_info, title, mime, size)
-    if not info_only:
-        download_urls([stream], title, ext, size, output_dir, merge=merge)
-
-
-site_info = "Vine.co"
-download = vine_download
-download_playlist = playlist_not_supported('vine')
diff --git a/src/you_get/extractors/xiami.py b/src/you_get/extractors/xiami.py
deleted file mode 100644
index 16656adb..00000000
--- a/src/you_get/extractors/xiami.py
+++ /dev/null
@@ -1,215 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-__all__ = ['xiami_download']
-
-from ..common import *
-
-from xml.dom.minidom import parseString
-from urllib import parse
-
-def location_dec(str):
-    head = int(str[0])
-    str = str[1:]
-    rows = head
-    cols = int(len(str)/rows) + 1
-
-    out = ""
-    full_row = len(str) % head
-    for c in range(cols):
-        for r in range(rows):
-            if c == (cols - 1) and r >= full_row:
-                continue
-            if r < full_row:
-                char = str[r*cols+c]
-            else:
-                char = str[cols*full_row+(r-full_row)*(cols-1)+c]
-            out += char
-    return parse.unquote(out).replace("^", "0")
-
-def xiami_download_lyric(lrc_url, file_name, output_dir):
-    lrc = get_content(lrc_url, headers=fake_headers)
-    filename = get_filename(file_name)
-    if len(lrc) > 0:
-        with open(output_dir + "/" + filename + '.lrc', 'w', encoding='utf-8') as x:
-            x.write(lrc)
-
-def xiami_download_pic(pic_url, file_name, output_dir):
-    from ..util.strings import get_filename
-    pic_url = pic_url.replace('_1', '')
-    pos = pic_url.rfind('.')
-    ext = pic_url[pos:]
-    pic = get_content(pic_url, headers=fake_headers, decoded=False)
-    if len(pic) > 0:
-        with open(output_dir + "/" + file_name.replace('/', '-') + ext, 'wb') as x:
-            x.write(pic)
-
-def xiami_download_song(sid, output_dir = '.', info_only = False):
-    xml = get_content('http://www.xiami.com/song/playlist/id/%s/object_name/default/object_id/0' % sid, headers=fake_headers)
-    doc = parseString(xml)
-    i = doc.getElementsByTagName("track")[0]
-    artist = i.getElementsByTagName("artist")[0].firstChild.nodeValue
-    album_name = i.getElementsByTagName("album_name")[0].firstChild.nodeValue
-    song_title = i.getElementsByTagName("name")[0].firstChild.nodeValue
-    url = location_dec(i.getElementsByTagName("location")[0].firstChild.nodeValue)
-    try:
-        lrc_url = i.getElementsByTagName("lyric")[0].firstChild.nodeValue
-    except:
-        pass
-    type_, ext, size = url_info(url, headers=fake_headers)
-    if not ext:
-        ext = 'mp3'
-
-    print_info(site_info, song_title, ext, size)
-    if not info_only:
-        file_name = "%s - %s - %s" % (song_title, artist, album_name)
-        download_urls([url], file_name, ext, size, output_dir, headers=fake_headers)
-        try:
-            xiami_download_lyric(lrc_url, file_name, output_dir)
-        except:
-            pass
-
-def xiami_download_showcollect(cid, output_dir = '.', info_only = False):
-    html = get_content('http://www.xiami.com/song/showcollect/id/' + cid, headers=fake_headers)
-    collect_name = r1(r'<title>(.*)</title>', html)
-
-    xml = get_content('http://www.xiami.com/song/playlist/id/%s/type/3' % cid, headers=fake_headers)
-    doc = parseString(xml)
-    output_dir =  output_dir + "/" + "[" + collect_name + "]"
-    tracks = doc.getElementsByTagName("track")
-    track_nr = 1
-    for i in tracks:
-        artist=album_name=song_title=url=""
-        try:
-            song_id = i.getElementsByTagName("song_id")[0].firstChild.nodeValue
-            artist = i.getElementsByTagName("artist")[0].firstChild.nodeValue
-            album_name = i.getElementsByTagName("album_name")[0].firstChild.nodeValue
-            song_title = i.getElementsByTagName("title")[0].firstChild.nodeValue
-            url = location_dec(i.getElementsByTagName("location")[0].firstChild.nodeValue)
-        except:
-            log.e("Song %s failed. [Info Missing] artist:%s, album:%s, title:%s, url:%s" % (song_id, artist, album_name, song_title, url))
-            continue
-        try:
-            lrc_url = i.getElementsByTagName("lyric")[0].firstChild.nodeValue
-        except:
-            pass
-        type_, ext, size = url_info(url, headers=fake_headers)
-        if not ext:
-            ext = 'mp3'
-
-        print_info(site_info, song_title, ext, size)
-        if not info_only:
-            file_name = "%02d.%s - %s - %s" % (track_nr, song_title, artist, album_name)
-            download_urls([url], file_name, ext, size, output_dir, headers=fake_headers)
-            try:
-                xiami_download_lyric(lrc_url, file_name, output_dir)
-            except:
-                pass
-
-        track_nr += 1
-
-def xiami_download_album(aid, output_dir='.', info_only=False):
-    xml = get_content('http://www.xiami.com/song/playlist/id/%s/type/1' % aid, headers=fake_headers)
-    album_name = r1(r'<album_name><!\[CDATA\[(.*)\]\]>', xml)
-    artist = r1(r'<artist><!\[CDATA\[(.*)\]\]>', xml)
-    doc = parseString(xml)
-    output_dir = output_dir + "/%s - %s" % (artist, album_name)
-    track_list = doc.getElementsByTagName('trackList')[0]
-    tracks = track_list.getElementsByTagName("track")
-    track_nr = 1
-    pic_exist = False
-    for i in tracks:
-#in this xml track tag is used for both "track in a trackList" and track no
-#dirty here
-        if i.firstChild.nodeValue is not None:
-            continue
-        song_title = i.getElementsByTagName("songName")[0].firstChild.nodeValue
-        url = location_dec(i.getElementsByTagName("location")[0].firstChild.nodeValue)
-        try:
-            lrc_url = i.getElementsByTagName("lyric")[0].firstChild.nodeValue
-        except:
-            pass
-        if not pic_exist:
-            pic_url = i.getElementsByTagName("pic")[0].firstChild.nodeValue
-        type_, ext, size = url_info(url, headers=fake_headers)
-        if not ext:
-            ext = 'mp3'
-
-        print_info(site_info, song_title, ext, size)
-        if not info_only:
-            file_name = "%02d.%s" % (track_nr, song_title)
-            download_urls([url], file_name, ext, size, output_dir, headers=fake_headers)
-            try:
-                xiami_download_lyric(lrc_url, file_name, output_dir)
-            except:
-                pass
-            if not pic_exist:
-                xiami_download_pic(pic_url, 'cover', output_dir)
-                pic_exist = True
-
-        track_nr += 1
-
-def xiami_download_mv(url, output_dir='.', merge=True, info_only=False):
-    # FIXME: broken merge
-    page = get_content(url, headers=fake_headers)
-    title = re.findall('<title>([^<]+)', page)[0]
-    vid, uid = re.findall(r'vid:"(\d+)",uid:"(\d+)"', page)[0]
-    api_url = 'http://cloud.video.taobao.com/videoapi/info.php?vid=%s&uid=%s' % (vid, uid)
-    result = get_content(api_url, headers=fake_headers)
-    doc = parseString(result)
-    video_url = doc.getElementsByTagName("video_url")[-1].firstChild.nodeValue
-    length = int(doc.getElementsByTagName("length")[-1].firstChild.nodeValue)
-
-    v_urls = []
-    k_start = 0
-    total_size = 0
-    while True:
-        k_end = k_start + 20000000
-        if k_end >= length: k_end = length - 1
-        v_url = video_url + '/start_%s/end_%s/1.flv' % (k_start, k_end)
-        try:
-            _, ext, size = url_info(v_url)
-        except:
-            break
-        v_urls.append(v_url)
-        total_size += size
-        k_start = k_end + 1
-
-    print_info(site_info, title, ext, total_size)
-    if not info_only:
-        download_urls(v_urls, title, ext, total_size, output_dir, merge=merge, headers=fake_headers)
-
-def xiami_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
-#albums
-    if re.match(r'http://www.xiami.com/album/\d+', url):
-        id = r1(r'http://www.xiami.com/album/(\d+)', url)
-        xiami_download_album(id, output_dir, info_only)
-    elif re.match(r'http://www.xiami.com/album/\w+', url):
-        page = get_content(url, headers=fake_headers)
-        album_id = re.search(r'rel="canonical"\s+href="http://www.xiami.com/album/([^"]+)"', page).group(1)
-        xiami_download_album(album_id, output_dir, info_only)
-
-#collections
-    if re.match(r'http://www.xiami.com/collect/\d+', url):
-        id = r1(r'http://www.xiami.com/collect/(\d+)', url)
-        xiami_download_showcollect(id, output_dir, info_only)
-
-#single track
-    if re.match(r'http://www.xiami.com/song/\d+\b', url):
-        id = r1(r'http://www.xiami.com/song/(\d+)', url)
-        xiami_download_song(id, output_dir, info_only)
-    elif re.match(r'http://www.xiami.com/song/\w+', url):
-        html = get_content(url, headers=fake_headers)
-        id = r1(r'rel="canonical" href="http://www.xiami.com/song/([^"]+)"', html)
-        xiami_download_song(id, output_dir, info_only)
-
-    if re.match('http://www.xiami.com/song/detail/id/\d+', url):
-        id = r1(r'http://www.xiami.com/song/detail/id/(\d+)', url)
-        xiami_download_song(id, output_dir, info_only)
-
-    if re.match('http://www.xiami.com/mv', url):
-        xiami_download_mv(url, output_dir, merge=merge, info_only=info_only)
-
-site_info = "Xiami.com"
-download = xiami_download
-download_playlist = playlist_not_supported("xiami")
diff --git a/src/you_get/extractors/xinpianchang.py b/src/you_get/extractors/xinpianchang.py
index fac3d01f..1121550c 100644
--- a/src/you_get/extractors/xinpianchang.py
+++ b/src/you_get/extractors/xinpianchang.py
@@ -20,7 +20,7 @@ class Xinpianchang(VideoExtractor):
     def prepare(self, **kwargs):
         # find key
         page_content = get_content(self.url)
-        match_rule = r"vid: \"(.+?)\","
+        match_rule = r"vid = \"(.+?)\";"
         key = re.findall(match_rule, page_content)[0]
 
         # get videos info
diff --git a/src/you_get/extractors/yinyuetai.py b/src/you_get/extractors/yinyuetai.py
deleted file mode 100644
index 6c39540f..00000000
--- a/src/you_get/extractors/yinyuetai.py
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env python
-
-__all__ = ['yinyuetai_download', 'yinyuetai_download_by_id']
-
-from ..common import *
-
-def yinyuetai_download_by_id(vid, title=None, output_dir='.', merge=True, info_only=False):
-    video_info = json.loads(get_html('http://www.yinyuetai.com/insite/get-video-info?json=true&videoId=%s' % vid))
-    url_models = video_info['videoInfo']['coreVideoInfo']['videoUrlModels']
-    url_models = sorted(url_models, key=lambda i: i['qualityLevel'])
-    url = url_models[-1]['videoUrl']
-    type = ext = r1(r'\.(flv|mp4)', url)
-    _, _, size = url_info(url)
-
-    print_info(site_info, title, type, size)
-    if not info_only:
-        download_urls([url], title, ext, size, output_dir, merge = merge)
-
-def yinyuetai_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
-    id = r1(r'http://\w+.yinyuetai.com/video/(\d+)', url) or \
-         r1(r'http://\w+.yinyuetai.com/video/h5/(\d+)', url)
-    if not id:
-        yinyuetai_download_playlist(url, output_dir=output_dir, merge=merge, info_only=info_only)
-        return
-
-    html = get_html(url, 'utf-8')
-    title = r1(r'<meta property="og:title"\s+content="([^"]+)"/>', html) or r1(r'<title>(.*)', html)
-    assert title
-    title = parse.unquote(title)
-    title = escape_file_path(title)
-    yinyuetai_download_by_id(id, title, output_dir, merge=merge, info_only=info_only)
-
-def yinyuetai_download_playlist(url, output_dir='.', merge=True, info_only=False, **kwargs):
-    playlist = r1(r'http://\w+.yinyuetai.com/playlist/(\d+)', url)
-    html = get_html(url)
-    data_ids = re.findall(r'data-index="\d+"\s*data-id=(\d+)', html)
-    for data_id in data_ids:
-        yinyuetai_download('http://v.yinyuetai.com/video/' + data_id,
-                           output_dir=output_dir, merge=merge, info_only=info_only)
-
-site_info = "YinYueTai.com"
-download = yinyuetai_download
-download_playlist = yinyuetai_download_playlist
diff --git a/src/you_get/extractors/youku.py b/src/you_get/extractors/youku.py
index d7107eca..7a6fb2fc 100644
--- a/src/you_get/extractors/youku.py
+++ b/src/you_get/extractors/youku.py
@@ -41,7 +41,6 @@ class Youku(VideoExtractor):
     mobile_ua = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36'
     dispatcher_url = 'vali.cp31.ott.cibntv.net'
 
-    # Last updated: 2017-10-13
     stream_types = [
         {'id': 'hd3',      'container': 'flv', 'video_profile': '1080P'},
         {'id': 'hd3v2',    'container': 'flv', 'video_profile': '1080P'},
@@ -78,7 +77,7 @@ class Youku(VideoExtractor):
         self.api_error_code = None
         self.api_error_msg = None
 
-        self.ccode = '0519'
+        self.ccode = '0564'
         # Found in http://g.alicdn.com/player/ykplayer/0.5.64/youku-player.min.js
         # grep -oE '"[0-9a-zA-Z+/=]{256}"' youku-player.min.js
         self.ckey = 'DIl58SLFxFNndSV1GFNnMQVYkx1PP5tKe1siZu/86PR1u/Wh1Ptd+WOZsHHWxysSfAOhNJpdVWsdVJNsfJ8Sxd8WKVvNfAS8aS8fAOzYARzPyPc3JvtnPHjTdKfESTdnuTW6ZPvk2pNDh4uFzotgdMEFkzQ5wZVXl2Pf1/Y6hLK0OnCNxBj3+nb0v72gZ6b0td+WOZsHHWxysSo/0y9D2K42SaB8Y/+aD2K42SaB8Y/+ahU+WOZsHcrxysooUeND'
@@ -243,7 +242,7 @@ class Youku(VideoExtractor):
 
 def youku_download_playlist_by_url(url, **kwargs):
     video_page_pt = 'https?://v.youku.com/v_show/id_([A-Za-z0-9=]+)'
-    js_cb_pt = '\(({.+})\)'
+    js_cb_pt = r'\(({.+})\)'
     if re.match(video_page_pt, url):
         youku_obj = Youku()
         youku_obj.url = url
@@ -273,14 +272,14 @@ def youku_download_playlist_by_url(url, **kwargs):
         page = get_content(url)
         show_id = re.search(r'showid:"(\d+)"', page).group(1)
         ep = 'http://list.youku.com/show/module?id={}&tab=showInfo&callback=jQuery'.format(show_id)
-        xhr_page = get_content(ep).replace('\/', '/').replace('\"', '"')
+        xhr_page = get_content(ep).replace(r'\/', '/').replace(r'\"', '"')
         video_url = re.search(r'(v.youku.com/v_show/id_(?:[A-Za-z0-9=]+)\.html)', xhr_page).group(1)
         youku_download_playlist_by_url('http://'+video_url, **kwargs)
         return
-    elif re.match('https?://list.youku.com/albumlist/show/id_(\d+)\.html', url):
+    elif re.match(r'https?://list.youku.com/albumlist/show/id_(\d+)\.html', url):
         # http://list.youku.com/albumlist/show/id_2336634.html
         # UGC playlist
-        list_id = re.search('https?://list.youku.com/albumlist/show/id_(\d+)\.html', url).group(1)
+        list_id = re.search(r'https?://list.youku.com/albumlist/show/id_(\d+)\.html', url).group(1)
         ep = 'http://list.youku.com/albumlist/items?id={}&page={}&size=20&ascending=1&callback=tuijsonp6'
 
         first_u = ep.format(list_id, 1)
@@ -295,7 +294,7 @@ def youku_download_playlist_by_url(url, **kwargs):
             for i in range(2, req_cnt+2):
                 req_u = ep.format(list_id, i)
                 xhr_page = get_content(req_u)
-                json_data = json.loads(re.search(js_cb_pt, xhr_page).group(1).replace('\/', '/'))
+                json_data = json.loads(re.search(js_cb_pt, xhr_page).group(1).replace(r'\/', '/'))
                 xhr_html = json_data['html']
                 page_videos = re.findall(r'(v.youku.com/v_show/id_(?:[A-Za-z0-9=]+)\.html)', xhr_html)
                 v_urls.extend(page_videos)
diff --git a/src/you_get/extractors/youtube.py b/src/you_get/extractors/youtube.py
index 4f3a947e..fe064199 100644
--- a/src/you_get/extractors/youtube.py
+++ b/src/you_get/extractors/youtube.py
@@ -3,6 +3,13 @@
 from ..common import *
 from ..extractor import VideoExtractor
 
+try:
+    import dukpy
+except ImportError:
+    log.e('Please install dukpy in order to extract videos from YouTube:')
+    log.e('$ pip install dukpy')
+    exit(0)
+from urllib.parse import urlparse, parse_qs, urlencode
 from xml.dom.minidom import parseString
 
 class YouTube(VideoExtractor):
@@ -68,40 +75,33 @@ class YouTube(VideoExtractor):
          'audio_encoding': 'AAC', 'audio_bitrate': '24'},
     ]
 
-    def decipher(js, s):
-        # Examples:
-        # - https://www.youtube.com/yts/jsbin/player-da_DK-vflWlK-zq/base.js
-        # - https://www.youtube.com/yts/jsbin/player-vflvABTsY/da_DK/base.js
-        # - https://www.youtube.com/yts/jsbin/player-vfls4aurX/da_DK/base.js
-        # - https://www.youtube.com/yts/jsbin/player_ias-vfl_RGK2l/en_US/base.js
-        # - https://www.youtube.com/yts/jsbin/player-vflRjqq_w/da_DK/base.js
-        # - https://www.youtube.com/yts/jsbin/player_ias-vfl-jbnrr/da_DK/base.js
-        def tr_js(code):
-            code = re.sub(r'function', r'def', code)
-            code = re.sub(r'(\W)(as|if|in|is|or)\(', r'\1_\2(', code)
-            code = re.sub(r'\$', '_dollar', code)
-            code = re.sub(r'\{', r':\n\t', code)
-            code = re.sub(r'\}', r'\n', code)
-            code = re.sub(r'var\s+', r'', code)
-            code = re.sub(r'(\w+).join\(""\)', r'"".join(\1)', code)
-            code = re.sub(r'(\w+).length', r'len(\1)', code)
-            code = re.sub(r'(\w+).slice\((\w+)\)', r'\1[\2:]', code)
-            code = re.sub(r'(\w+).splice\((\w+),(\w+)\)', r'del \1[\2:\2+\3]', code)
-            code = re.sub(r'(\w+).split\(""\)', r'list(\1)', code)
-            return code
+    def dethrottle(js, url):
+        def n_to_n(js, n):
+            # Examples:
+            #   yma - https://www.youtube.com/s/player/84314bef/player_ias.vflset/en_US/base.js
+            #   Xka - https://www.youtube.com/s/player/dc0c6770/player_ias.vflset/sv_SE/base.js
+            #   jma - https://www.youtube.com/s/player/8d9f6215/player_ias.vflset/sv_SE/base.js
+            f1 = match1(js, r',[$\w]+\.length\|\|([$\w]+)\(""\)\)}};')
+            f1def = match1(js, r'\W%s=(function\(\w+\).+?\)});' % re.escape(f1))
+            n = dukpy.evaljs('(%s)("%s")' % (f1def, n))
+            return n
 
-        js = js.replace('\n', ' ')
-        f1 = match1(js, r'\.set\(\w+\.sp,encodeURIComponent\(([$\w]+)') or \
-            match1(js, r'\.set\(\w+\.sp,\(0,window\.encodeURIComponent\)\(([$\w]+)') or \
-            match1(js, r'\.set\(\w+\.sp,([$\w]+)\(\w+\.s\)\)') or \
-            match1(js, r'"signature",([$\w]+)\(\w+\.\w+\)') or \
-            match1(js, r'=([$\w]+)\(decodeURIComponent\(')
-        f1def = match1(js, r'function %s(\(\w+\)\{[^\{]+\})' % re.escape(f1)) or \
-                match1(js, r'\W%s=function(\(\w+\)\{[^\{]+\})' % re.escape(f1))
-        f1def = re.sub(r'([$\w]+\.)([$\w]+\(\w+,\d+\))', r'\2', f1def)
-        f1def = 'function main_%s%s' % (f1, f1def)  # prefix to avoid potential namespace conflict
-        code = tr_js(f1def)
-        f2s = set(re.findall(r'([$\w]+)\(\w+,\d+\)', f1def))
+        u = urlparse(url)
+        qs = parse_qs(u.query)
+        n = n_to_n(js, qs['n'][0])
+        qs['n'] = [n]
+        return u._replace(query=urlencode(qs, doseq=True)).geturl()
+
+    def s_to_sig(js, s):
+        # Examples:
+        #   BPa - https://www.youtube.com/s/player/84314bef/player_ias.vflset/en_US/base.js
+        #   Xva - https://www.youtube.com/s/player/dc0c6770/player_ias.vflset/sv_SE/base.js
+        js_code = ''
+        f1 = match1(js, r'=([$\w]+)\(decodeURIComponent\(')
+        f1def = match1(js, r'\W%s=function(\(\w+\)\{[^\{]+\})' % re.escape(f1))
+        f1def = re.sub(r'([$\w]+\.)([$\w]+\(\w+,\d+\))', r'\2', f1def)  # remove . prefix
+        f1def = 'function %s%s' % (f1, f1def)
+        f2s = set(re.findall(r'([$\w]+)\(\w+,\d+\)', f1def))  # find all invoked function names
         for f2 in f2s:
             f2e = re.escape(f2)
             f2def = re.search(r'[^$\w]%s:function\((\w+,\w+)\)(\{[^\{\}]+\})' % f2e, js)
@@ -110,15 +110,10 @@ class YouTube(VideoExtractor):
             else:
                 f2def = re.search(r'[^$\w]%s:function\((\w+)\)(\{[^\{\}]+\})' % f2e, js)
                 f2def = 'function {}({},b){}'.format(f2e, f2def.group(1), f2def.group(2))
-            f2 = re.sub(r'(as|if|in|is|or)', r'_\1', f2)
-            f2 = re.sub(r'\$', '_dollar', f2)
-            code = code + 'global %s\n' % f2 + tr_js(f2def)
-
-        f1 = re.sub(r'(as|if|in|is|or)', r'_\1', f1)
-        f1 = re.sub(r'\$', '_dollar', f1)
-        code = code + 'sig=main_%s(s)' % f1  # prefix to avoid potential namespace conflict
-        exec(code, globals(), locals())
-        return locals()['sig']
+            js_code += f2def + ';'
+        js_code += f1def + ';%s("%s")' % (f1, s)
+        sig = dukpy.evaljs(js_code)
+        return sig
 
     def chunk_by_range(url, size):
         urls = []
@@ -138,6 +133,7 @@ class YouTube(VideoExtractor):
         """
         return match1(url, r'youtu\.be/([^?/]+)') or \
           match1(url, r'youtube\.com/embed/([^/?]+)') or \
+          match1(url, r'youtube\.com/shorts/([^/?]+)') or \
           match1(url, r'youtube\.com/v/([^/?]+)') or \
           match1(url, r'youtube\.com/watch/([^/?]+)') or \
           parse_query_param(url, 'v') or \
@@ -157,36 +153,41 @@ class YouTube(VideoExtractor):
             log.wtf('[Failed] Unsupported URL pattern.')
 
         video_page = get_content('https://www.youtube.com/playlist?list=%s' % playlist_id)
-        from html.parser import HTMLParser
-        videos = sorted([HTMLParser().unescape(video)
-                         for video in re.findall(r'<a href="(/watch\?[^"]+)"', video_page)
-                         if parse_query_param(video, 'index')],
-                        key=lambda video: parse_query_param(video, 'index'))
+        playlist_json_serialized = match1(video_page, r'window\["ytInitialData"\]\s*=\s*(.+);', r'var\s+ytInitialData\s*=\s*([^;]+);')
 
-        # Parse browse_ajax page for more videos to load
-        load_more_href = match1(video_page, r'data-uix-load-more-href="([^"]+)"')
-        while load_more_href:
-            browse_ajax = get_content('https://www.youtube.com/%s' % load_more_href)
-            browse_data = json.loads(browse_ajax)
-            load_more_widget_html = browse_data['load_more_widget_html']
-            content_html = browse_data['content_html']
-            vs = set(re.findall(r'href="(/watch\?[^"]+)"', content_html))
-            videos += sorted([HTMLParser().unescape(video)
-                              for video in list(vs)
-                              if parse_query_param(video, 'index')])
-            load_more_href = match1(load_more_widget_html, r'data-uix-load-more-href="([^"]+)"')
+        if len(playlist_json_serialized) == 0:
+            log.wtf('[Failed] Unable to extract playlist data')
+
+        ytInitialData = json.loads(playlist_json_serialized[0])
+
+        tab0 = ytInitialData['contents']['twoColumnBrowseResultsRenderer']['tabs'][0]
+        itemSection0 = tab0['tabRenderer']['content']['sectionListRenderer']['contents'][0]
+        playlistVideoList0 = itemSection0['itemSectionRenderer']['contents'][0]
+        videos = playlistVideoList0['playlistVideoListRenderer']['contents']
 
         self.title = re.search(r'<meta name="title" content="([^"]+)"', video_page).group(1)
         self.p_playlist()
-        for video in videos:
-            vid = parse_query_param(video, 'v')
-            index = parse_query_param(video, 'index')
+        for index, video in enumerate(videos, 1):
+            vid = video['playlistVideoRenderer']['videoId']
             try:
                 self.__class__().download_by_url(self.__class__.get_url_from_vid(vid), index=index, **kwargs)
             except:
                 pass
+        # FIXME: show DASH stream sizes (by default) for playlist videos
+
+    def check_playability_response(self, ytInitialPlayerResponse):
+        STATUS_OK = "OK"
+
+        playerResponseStatus = ytInitialPlayerResponse["playabilityStatus"]["status"]
+        if playerResponseStatus != STATUS_OK:
+            reason = ytInitialPlayerResponse["playabilityStatus"].get("reason", "")
+            raise AssertionError(
+                f"Server refused to provide video details. Returned status: {playerResponseStatus}, reason: {reason}."
+            )
 
     def prepare(self, **kwargs):
+        self.ua = 'Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.103 Mobile Safari/537.36'
+
         assert self.url or self.vid
 
         if not self.vid and self.url:
@@ -196,152 +197,72 @@ class YouTube(VideoExtractor):
                 self.download_playlist_by_url(self.url, **kwargs)
                 exit(0)
 
-        if re.search('\Wlist=', self.url) and not kwargs.get('playlist'):
+        if re.search(r'\Wlist=', self.url) and not kwargs.get('playlist'):
             log.w('This video is from a playlist. (use --playlist to download all videos in the playlist.)')
 
-        # Get video info
-        # 'eurl' is a magic parameter that can bypass age restriction
-        # full form: 'eurl=https%3A%2F%2Fyoutube.googleapis.com%2Fv%2F{VIDEO_ID}'
-        video_info = parse.parse_qs(get_content('https://www.youtube.com/get_video_info?video_id={}&eurl=https%3A%2F%2Fy'.format(self.vid)))
-        logging.debug('STATUS: %s' % video_info['status'][0])
+        # Extract from video page
+        logging.debug('Extracting from the video page...')
+        video_page = get_content('https://www.youtube.com/watch?v=%s' % self.vid, headers={'User-Agent': self.ua})
 
-        ytplayer_config = None
-        if 'status' not in video_info:
-            log.wtf('[Failed] Unknown status.', exit_code=None)
-            raise
-        elif video_info['status'] == ['ok']:
-            if 'use_cipher_signature' not in video_info or video_info['use_cipher_signature'] == ['False']:
-                self.title = parse.unquote_plus(json.loads(video_info["player_response"][0])["videoDetails"]["title"])
-                # Parse video page (for DASH)
-                video_page = get_content('https://www.youtube.com/watch?v=%s' % self.vid)
-                try:
-                    ytplayer_config = json.loads(re.search('ytplayer.config\s*=\s*([^\n]+?});', video_page).group(1))
-                    self.html5player = 'https://www.youtube.com' + ytplayer_config['assets']['js']
-                    # Workaround: get_video_info returns bad s. Why?
-                    if 'url_encoded_fmt_stream_map' not in ytplayer_config['args']:
-                        stream_list = json.loads(ytplayer_config['args']['player_response'])['streamingData']['formats']
-                    else:
-                        stream_list = ytplayer_config['args']['url_encoded_fmt_stream_map'].split(',')
-                    #stream_list = ytplayer_config['args']['adaptive_fmts'].split(',')
-                except:
-                    if 'url_encoded_fmt_stream_map' not in video_info:
-                        stream_list = json.loads(video_info['player_response'][0])['streamingData']['formats']
-                    else:
-                        stream_list = video_info['url_encoded_fmt_stream_map'][0].split(',')
-                    if re.search('([^"]*/base\.js)"', video_page):
-                        self.html5player = 'https://www.youtube.com' + re.search('([^"]*/base\.js)"', video_page).group(1)
-                    else:
-                        self.html5player = None
+        try:
+            jsUrl = re.search(r'([^"]*/base\.js)"', video_page).group(1)
+        except:
+            log.wtf('[Failed] Unable to find base.js on the video page')
+        self.html5player = 'https://www.youtube.com' + jsUrl
+        logging.debug('Retrieving the player code...')
+        self.js = get_content(self.html5player).replace('\n', ' ')
 
-            else:
-                # Parse video page instead
-                video_page = get_content('https://www.youtube.com/watch?v=%s' % self.vid)
-                ytplayer_config = json.loads(re.search('ytplayer.config\s*=\s*([^\n]+?});', video_page).group(1))
+        logging.debug('Loading ytInitialPlayerResponse...')
+        ytInitialPlayerResponse = json.loads(re.search(r'ytInitialPlayerResponse\s*=\s*([^\n]+?});(\n|</script>|var )', video_page).group(1))
+        self.check_playability_response(ytInitialPlayerResponse)
 
-                self.title = json.loads(ytplayer_config["args"]["player_response"])["videoDetails"]["title"]
-                self.html5player = 'https://www.youtube.com' + ytplayer_config['assets']['js']
-                stream_list = ytplayer_config['args']['url_encoded_fmt_stream_map'].split(',')
+        # Get the video title
+        self.title = ytInitialPlayerResponse["videoDetails"]["title"]
 
-        elif video_info['status'] == ['fail']:
-            logging.debug('ERRORCODE: %s' % video_info['errorcode'][0])
-            if video_info['errorcode'] == ['150']:
-                # FIXME: still relevant?
-                if cookies:
-                    # Load necessary cookies into headers (for age-restricted videos)
-                    consent, ssid, hsid, sid = 'YES', '', '', ''
-                    for cookie in cookies:
-                        if cookie.domain.endswith('.youtube.com'):
-                            if cookie.name == 'SSID':
-                                ssid = cookie.value
-                            elif cookie.name == 'HSID':
-                                hsid = cookie.value
-                            elif cookie.name == 'SID':
-                                sid = cookie.value
-                    cookie_str = 'CONSENT=%s; SSID=%s; HSID=%s; SID=%s' % (consent, ssid, hsid, sid)
+        # Check the status
+        playabilityStatus = ytInitialPlayerResponse['playabilityStatus']
+        status = playabilityStatus['status']
+        logging.debug('status: %s' % status)
+        if status != 'OK':
+            # If cookies are loaded, status should be OK
+            try:
+                subreason = playabilityStatus['errorScreen']['playerErrorMessageRenderer']['subreason']['runs'][0]['text']
+                log.e('[Error] %s (%s)' % (playabilityStatus['reason'], subreason))
+            except:
+                log.e('[Error] %s' % playabilityStatus['reason'])
+            if status == 'LOGIN_REQUIRED':
+                log.e('View the video from a browser and export the cookies, then use --cookies to load cookies.')
+            exit(1)
 
-                    video_page = get_content('https://www.youtube.com/watch?v=%s' % self.vid,
-                                             headers={'Cookie': cookie_str})
-                else:
-                    video_page = get_content('https://www.youtube.com/watch?v=%s' % self.vid)
-
-                try:
-                    ytplayer_config = json.loads(re.search('ytplayer.config\s*=\s*([^\n]+});ytplayer', video_page).group(1))
-                except:
-                    msg = re.search('class="message">([^<]+)<', video_page).group(1)
-                    log.wtf('[Failed] Got message "%s". Try to login with --cookies.' % msg.strip())
-
-                if 'title' in ytplayer_config['args']:
-                    # 150 Restricted from playback on certain sites
-                    # Parse video page instead
-                    self.title = ytplayer_config['args']['title']
-                    self.html5player = 'https://www.youtube.com' + ytplayer_config['assets']['js']
-                    stream_list = ytplayer_config['args']['url_encoded_fmt_stream_map'].split(',')
-                else:
-                    log.wtf('[Error] The uploader has not made this video available in your country.', exit_code=None)
-                    raise
-                    #self.title = re.search('<meta name="title" content="([^"]+)"', video_page).group(1)
-                    #stream_list = []
-
-            elif video_info['errorcode'] == ['100']:
-                log.wtf('[Failed] This video does not exist.', exit_code=None) #int(video_info['errorcode'][0])
-                raise
-
-            else:
-                log.wtf('[Failed] %s' % video_info['reason'][0], exit_code=None) #int(video_info['errorcode'][0])
-                raise
-
-        else:
-            log.wtf('[Failed] Invalid status.', exit_code=None)
-            raise
-
-        # YouTube Live
-        if ytplayer_config and (ytplayer_config['args'].get('livestream') == '1' or ytplayer_config['args'].get('live_playback') == '1'):
-            if 'hlsvp' in ytplayer_config['args']:
-                hlsvp = ytplayer_config['args']['hlsvp']
-            else:
-                player_response= json.loads(ytplayer_config['args']['player_response'])
-                log.e('[Failed] %s' % player_response['playabilityStatus']['reason'], exit_code=1)
-
-            if 'info_only' in kwargs and kwargs['info_only']:
-                return
-            else:
-                download_url_ffmpeg(hlsvp, self.title, 'mp4')
-                exit(0)
+        stream_list = ytInitialPlayerResponse['streamingData']['formats']
 
         for stream in stream_list:
-            if isinstance(stream, str):
-                metadata = parse.parse_qs(stream)
-                stream_itag = metadata['itag'][0]
-                self.streams[stream_itag] = {
-                    'itag': metadata['itag'][0],
-                    'url': metadata['url'][0],
-                    'sig': metadata['sig'][0] if 'sig' in metadata else None,
-                    's': metadata['s'][0] if 's' in metadata else None,
-                    'quality': metadata['quality'][0] if 'quality' in metadata else None,
-                    #'quality': metadata['quality_label'][0] if 'quality_label' in metadata else None,
-                    'type': metadata['type'][0],
-                    'mime': metadata['type'][0].split(';')[0],
-                    'container': mime_to_container(metadata['type'][0].split(';')[0]),
-                }
+            logging.debug('Found format: itag=%s' % stream['itag'])
+            if 'signatureCipher' in stream:
+                logging.debug('  Parsing signatureCipher for itag=%s...' % stream['itag'])
+                qs = parse_qs(stream['signatureCipher'])
+                #logging.debug(qs)
+                sp = qs['sp'][0]
+                sig = self.__class__.s_to_sig(self.js, qs['s'][0])
+                url = qs['url'][0] + '&{}={}'.format(sp, sig)
+            elif 'url' in stream:
+                url = stream['url']
             else:
-                stream_itag = str(stream['itag'])
-                self.streams[stream_itag] = {
-                    'itag': str(stream['itag']),
-                    'url': stream['url'] if 'url' in stream else None,
-                    'sig': None,
-                    's': None,
-                    'quality': stream['quality'],
-                    'type': stream['mimeType'],
-                    'mime': stream['mimeType'].split(';')[0],
-                    'container': mime_to_container(stream['mimeType'].split(';')[0]),
-                }
-                if 'signatureCipher' in stream:
-                    self.streams[stream_itag].update(dict([(_.split('=')[0], parse.unquote(_.split('=')[1]))
-                                                           for _ in stream['signatureCipher'].split('&')]))
+                log.wtf('  No signatureCipher or url for itag=%s' % stream['itag'])
+            url = self.__class__.dethrottle(self.js, url)
 
-        # Prepare caption tracks
+            self.streams[str(stream['itag'])] = {
+                'itag': str(stream['itag']),
+                'url': url,
+                'quality': stream['quality'],
+                'type': stream['mimeType'],
+                'mime': stream['mimeType'].split(';')[0],
+                'container': mime_to_container(stream['mimeType'].split(';')[0]),
+            }
+
+        # FIXME: Prepare caption tracks
         try:
-            caption_tracks = json.loads(ytplayer_config['args']['player_response'])['captions']['playerCaptionsTracklistRenderer']['captionTracks']
+            caption_tracks = ytInitialPlayerResponse['captions']['playerCaptionsTracklistRenderer']['captionTracks']
             for ct in caption_tracks:
                 ttsurl, lang = ct['baseUrl'], ct['languageCode']
 
@@ -367,149 +288,72 @@ class YouTube(VideoExtractor):
                     srt += '%s --> %s\n' % (start, finish)
                     srt += '%s\n\n' % content
 
-                self.caption_tracks[lang] = srt
+                if 'kind' in ct:
+                    self.caption_tracks[ct['vssId']] = srt  # autogenerated
+                else:
+                    self.caption_tracks[lang] = srt
         except: pass
 
-        # Prepare DASH streams (NOTE: not every video has DASH streams!)
-        try:
-            dashmpd = ytplayer_config['args']['dashmpd']
-            dash_xml = parseString(get_content(dashmpd))
-            for aset in dash_xml.getElementsByTagName('AdaptationSet'):
-                mimeType = aset.getAttribute('mimeType')
-                if mimeType == 'audio/mp4':
-                    rep = aset.getElementsByTagName('Representation')[-1]
-                    burls = rep.getElementsByTagName('BaseURL')
-                    dash_mp4_a_url = burls[0].firstChild.nodeValue
-                    dash_mp4_a_size = burls[0].getAttribute('yt:contentLength')
-                    if not dash_mp4_a_size:
-                        try: dash_mp4_a_size = url_size(dash_mp4_a_url)
-                        except: continue
-                elif mimeType == 'audio/webm':
-                    rep = aset.getElementsByTagName('Representation')[-1]
-                    burls = rep.getElementsByTagName('BaseURL')
-                    dash_webm_a_url = burls[0].firstChild.nodeValue
-                    dash_webm_a_size = burls[0].getAttribute('yt:contentLength')
-                    if not dash_webm_a_size:
-                        try: dash_webm_a_size = url_size(dash_webm_a_url)
-                        except: continue
-                elif mimeType == 'video/mp4':
-                    for rep in aset.getElementsByTagName('Representation'):
-                        w = int(rep.getAttribute('width'))
-                        h = int(rep.getAttribute('height'))
-                        itag = rep.getAttribute('id')
-                        burls = rep.getElementsByTagName('BaseURL')
-                        dash_url = burls[0].firstChild.nodeValue
-                        dash_size = burls[0].getAttribute('yt:contentLength')
-                        if not dash_size:
-                            try: dash_size = url_size(dash_url)
-                            except: continue
-                        dash_urls = self.__class__.chunk_by_range(dash_url, int(dash_size))
-                        dash_mp4_a_urls = self.__class__.chunk_by_range(dash_mp4_a_url, int(dash_mp4_a_size))
-                        self.dash_streams[itag] = {
-                            'quality': '%sx%s' % (w, h),
-                            'itag': itag,
-                            'type': mimeType,
-                            'mime': mimeType,
-                            'container': 'mp4',
-                            'src': [dash_urls, dash_mp4_a_urls],
-                            'size': int(dash_size) + int(dash_mp4_a_size)
-                        }
-                elif mimeType == 'video/webm':
-                    for rep in aset.getElementsByTagName('Representation'):
-                        w = int(rep.getAttribute('width'))
-                        h = int(rep.getAttribute('height'))
-                        itag = rep.getAttribute('id')
-                        burls = rep.getElementsByTagName('BaseURL')
-                        dash_url = burls[0].firstChild.nodeValue
-                        dash_size = burls[0].getAttribute('yt:contentLength')
-                        if not dash_size:
-                            try: dash_size = url_size(dash_url)
-                            except: continue
-                        dash_urls = self.__class__.chunk_by_range(dash_url, int(dash_size))
-                        dash_webm_a_urls = self.__class__.chunk_by_range(dash_webm_a_url, int(dash_webm_a_size))
-                        self.dash_streams[itag] = {
-                            'quality': '%sx%s' % (w, h),
-                            'itag': itag,
-                            'type': mimeType,
-                            'mime': mimeType,
-                            'container': 'webm',
-                            'src': [dash_urls, dash_webm_a_urls],
-                            'size': int(dash_size) + int(dash_webm_a_size)
-                        }
-        except:
-            # VEVO
-            if not self.html5player: return
-            self.html5player = self.html5player.replace('\/', '/') # unescape URL (for age-restricted videos)
-            self.js = get_content(self.html5player)
+        # Prepare DASH streams
+        if 'adaptiveFormats' in ytInitialPlayerResponse['streamingData']:
+            streams = ytInitialPlayerResponse['streamingData']['adaptiveFormats']
 
-            try:
-                # Video info from video page (not always available)
-                streams = [dict([(i.split('=')[0],
-                                  parse.unquote(i.split('=')[1]))
-                                 for i in afmt.split('&')])
-                           for afmt in ytplayer_config['args']['adaptive_fmts'].split(',')]
-            except:
-                if 'adaptive_fmts' in video_info:
-                    streams = [dict([(i.split('=')[0],
-                                      parse.unquote(i.split('=')[1]))
-                                     for i in afmt.split('&')])
-                               for afmt in video_info['adaptive_fmts'][0].split(',')]
+            # FIXME: dead code?
+            # streams without contentLength got broken urls, just remove them (#2767)
+            streams = [stream for stream in streams if 'contentLength' in stream]
+
+            for stream in streams:
+                logging.debug('Found adaptiveFormat: itag=%s' % stream['itag'])
+                stream['itag'] = str(stream['itag'])
+                if 'qualityLabel' in stream:
+                    stream['quality_label'] = stream['qualityLabel']
+                    del stream['qualityLabel']
+                    logging.debug('  quality_label: \t%s' % stream['quality_label'])
+                if 'width' in stream:
+                    stream['size'] = '{}x{}'.format(stream['width'], stream['height'])
+                    del stream['width']
+                    del stream['height']
+                    logging.debug('  size: \t%s' % stream['size'])
+                stream['type'] = stream['mimeType']
+                logging.debug('  type: \t%s' % stream['type'])
+                stream['clen'] = stream['contentLength']
+                stream['init'] = '{}-{}'.format(
+                    stream['initRange']['start'],
+                    stream['initRange']['end'])
+                stream['index'] = '{}-{}'.format(
+                    stream['indexRange']['start'],
+                    stream['indexRange']['end'])
+                del stream['mimeType']
+                del stream['contentLength']
+                del stream['initRange']
+                del stream['indexRange']
+
+                if 'signatureCipher' in stream:
+                    logging.debug('  Parsing signatureCipher for itag=%s...' % stream['itag'])
+                    qs = parse_qs(stream['signatureCipher'])
+                    #logging.debug(qs)
+                    sp = qs['sp'][0]
+                    sig = self.__class__.s_to_sig(self.js, qs['s'][0])
+                    url = qs['url'][0] + '&ratebypass=yes&{}={}'.format(sp, sig)
+                elif 'url' in stream:
+                    url = stream['url']
                 else:
-                    try:
-                        streams = json.loads(video_info['player_response'][0])['streamingData']['adaptiveFormats']
-                    except:  # no DASH stream at all
-                        return
-                    # streams without contentLength got broken urls, just remove them (#2767)
-                    streams = [stream for stream in streams if 'contentLength' in stream]
-                    for stream in streams:
-                        stream['itag'] = str(stream['itag'])
-                        if 'qualityLabel' in stream:
-                            stream['quality_label'] = stream['qualityLabel']
-                            del stream['qualityLabel']
-                        if 'width' in stream:
-                            stream['size'] = '{}x{}'.format(stream['width'], stream['height'])
-                            del stream['width']
-                            del stream['height']
-                        stream['type'] = stream['mimeType']
-                        stream['clen'] = stream['contentLength']
-                        stream['init'] = '{}-{}'.format(
-                            stream['initRange']['start'],
-                            stream['initRange']['end'])
-                        stream['index'] = '{}-{}'.format(
-                            stream['indexRange']['start'],
-                            stream['indexRange']['end'])
-                        del stream['mimeType']
-                        del stream['contentLength']
-                        del stream['initRange']
-                        del stream['indexRange']
-                        if 'signatureCipher' in stream:
-                            stream.update(dict([(_.split('=')[0], parse.unquote(_.split('=')[1]))
-                                                for _ in stream['signatureCipher'].split('&')]))
-                            del stream['signatureCipher']
+                    log.wtf('No signatureCipher or url for itag=%s' % stream['itag'])
+                url = self.__class__.dethrottle(self.js, url)
+                stream['url'] = url
 
-            for stream in streams: # get over speed limiting
-                stream['url'] += '&ratebypass=yes'
             for stream in streams: # audio
                 if stream['type'].startswith('audio/mp4'):
                     dash_mp4_a_url = stream['url']
-                    if 's' in stream:
-                        sig = self.__class__.decipher(self.js, stream['s'])
-                        dash_mp4_a_url += '&sig={}'.format(sig)
                     dash_mp4_a_size = stream['clen']
                 elif stream['type'].startswith('audio/webm'):
                     dash_webm_a_url = stream['url']
-                    if 's' in stream:
-                        sig = self.__class__.decipher(self.js, stream['s'])
-                        dash_webm_a_url += '&sig={}'.format(sig)
                     dash_webm_a_size = stream['clen']
             for stream in streams: # video
                 if 'size' in stream:
                     if stream['type'].startswith('video/mp4'):
                         mimeType = 'video/mp4'
                         dash_url = stream['url']
-                        if 's' in stream:
-                            sig = self.__class__.decipher(self.js, stream['s'])
-                            dash_url += '&sig={}'.format(sig)
                         dash_size = stream['clen']
                         itag = stream['itag']
                         dash_urls = self.__class__.chunk_by_range(dash_url, int(dash_size))
@@ -526,9 +370,6 @@ class YouTube(VideoExtractor):
                     elif stream['type'].startswith('video/webm'):
                         mimeType = 'video/webm'
                         dash_url = stream['url']
-                        if 's' in stream:
-                            sig = self.__class__.decipher(self.js, stream['s'])
-                            dash_url += '&sig={}'.format(sig)
                         dash_size = stream['clen']
                         itag = stream['itag']
                         audio_url = None
@@ -569,15 +410,6 @@ class YouTube(VideoExtractor):
 
         if stream_id in self.streams:
             src = self.streams[stream_id]['url']
-            if self.streams[stream_id]['sig'] is not None:
-                sig = self.streams[stream_id]['sig']
-                src += '&sig={}'.format(sig)
-            elif self.streams[stream_id]['s'] is not None:
-                if not hasattr(self, 'js'):
-                    self.js = get_content(self.html5player)
-                s = self.streams[stream_id]['s']
-                sig = self.__class__.decipher(self.js, s)
-                src += '&sig={}'.format(sig)
 
             self.streams[stream_id]['src'] = [src]
             self.streams[stream_id]['size'] = urls_size(self.streams[stream_id]['src'])
diff --git a/src/you_get/extractors/zhihu.py b/src/you_get/extractors/zhihu.py
index 64f81423..1dceef53 100644
--- a/src/you_get/extractors/zhihu.py
+++ b/src/you_get/extractors/zhihu.py
@@ -31,8 +31,8 @@ def zhihu_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
 
         play_list = video_info["playlist"]
         # first High Definition
-        # second Second Standard Definition
-        # third ld. What is ld ?
+        # second Standard Definition
+        # third Low Definition
         # finally continue
         data = play_list.get("hd", play_list.get("sd", play_list.get("ld", None)))
         if not data:
diff --git a/src/you_get/processor/ffmpeg.py b/src/you_get/processor/ffmpeg.py
index 11126c27..4bbbd177 100755
--- a/src/you_get/processor/ffmpeg.py
+++ b/src/you_get/processor/ffmpeg.py
@@ -93,7 +93,7 @@ def ffmpeg_concat_mp4_to_mpg(files, output='output.mpg'):
     # Use concat demuxer on FFmpeg >= 1.1
     if FFMPEG == 'ffmpeg' and (FFMPEG_VERSION[0] >= 2 or (FFMPEG_VERSION[0] == 1 and FFMPEG_VERSION[1] >= 1)):
         concat_list = generate_concat_list(files, output)
-        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '-1',
+        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '0',
                                         '-i', concat_list, '-c', 'copy']
         params.extend(['--', output])
         if subprocess.call(params, stdin=STDIN) == 0:
@@ -128,7 +128,7 @@ def ffmpeg_concat_mp4_to_mpg(files, output='output.mpg'):
 
 def ffmpeg_concat_ts_to_mkv(files, output='output.mkv'):
     print('Merging video parts... ', end="", flush=True)
-    params = [FFMPEG] + LOGLEVEL + ['-isync', '-y', '-i']
+    params = [FFMPEG] + LOGLEVEL + ['-y', '-i']
     params.append('concat:')
     for file in files:
         if os.path.isfile(file):
@@ -149,7 +149,7 @@ def ffmpeg_concat_flv_to_mp4(files, output='output.mp4'):
     # Use concat demuxer on FFmpeg >= 1.1
     if FFMPEG == 'ffmpeg' and (FFMPEG_VERSION[0] >= 2 or (FFMPEG_VERSION[0] == 1 and FFMPEG_VERSION[1] >= 1)):
         concat_list = generate_concat_list(files, output)
-        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '-1',
+        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '0',
                                         '-i', concat_list, '-c', 'copy',
                                         '-bsf:a', 'aac_adtstoasc']
         params.extend(['--', output])
@@ -175,7 +175,7 @@ def ffmpeg_concat_flv_to_mp4(files, output='output.mp4'):
     if FFMPEG == 'avconv':
         params += ['-c', 'copy']
     else:
-        params += ['-c', 'copy', '-absf', 'aac_adtstoasc']
+        params += ['-c', 'copy', '-bsf:a', 'aac_adtstoasc']
     params.extend(['--', output])
 
     if subprocess.call(params, stdin=STDIN) == 0:
@@ -203,7 +203,7 @@ def ffmpeg_concat_mp4_to_mp4(files, output='output.mp4'):
     # Use concat demuxer on FFmpeg >= 1.1
     if FFMPEG == 'ffmpeg' and (FFMPEG_VERSION[0] >= 2 or (FFMPEG_VERSION[0] == 1 and FFMPEG_VERSION[1] >= 1)):
         concat_list = generate_concat_list(files, output)
-        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '-1',
+        params = [FFMPEG] + LOGLEVEL + ['-y', '-f', 'concat', '-safe', '0',
                                         '-i', concat_list, '-c', 'copy',
                                         '-bsf:a', 'aac_adtstoasc']
         params.extend(['--', output])
@@ -229,7 +229,7 @@ def ffmpeg_concat_mp4_to_mp4(files, output='output.mp4'):
     if FFMPEG == 'avconv':
         params += ['-c', 'copy']
     else:
-        params += ['-c', 'copy', '-absf', 'aac_adtstoasc']
+        params += ['-c', 'copy', '-bsf:a', 'aac_adtstoasc']
     params.extend(['--', output])
 
     subprocess.check_call(params, stdin=STDIN)
diff --git a/src/you_get/version.py b/src/you_get/version.py
index e404e0c0..e0068208 100644
--- a/src/you_get/version.py
+++ b/src/you_get/version.py
@@ -1,4 +1,4 @@
 #!/usr/bin/env python
 
 script_name = 'you-get'
-__version__ = '0.4.1456'
+__version__ = '0.4.1730'
diff --git a/tests/test.py b/tests/test.py
index 00bd4cbb..2d220c62 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -10,13 +10,16 @@ from you_get.extractors import (
     acfun,
     bilibili,
     soundcloud,
-    tiktok
+    tiktok,
+    twitter,
+    miaopai
 )
 
 
 class YouGetTests(unittest.TestCase):
     def test_imgur(self):
         imgur.download('http://imgur.com/WVLk5nD', info_only=True)
+        imgur.download('https://imgur.com/we-should-have-listened-WVLk5nD', info_only=True)
 
     def test_magisto(self):
         magisto.download(
@@ -24,45 +27,47 @@ class YouGetTests(unittest.TestCase):
             info_only=True
         )
 
-    def test_youtube(self):
-        youtube.download(
-            'http://www.youtube.com/watch?v=pzKerr0JIPA', info_only=True
-        )
-        youtube.download('http://youtu.be/pzKerr0JIPA', info_only=True)
-        youtube.download(
-            'http://www.youtube.com/attribution_link?u=/watch?v%3DldAKIzq7bvs%26feature%3Dshare',  # noqa
-            info_only=True
-        )
-        youtube.download(
-            'https://www.youtube.com/watch?v=Fpr4fQSh1cc', info_only=True
-        )
+    #def test_youtube(self):
+        #youtube.download(
+        #    'http://www.youtube.com/watch?v=pzKerr0JIPA', info_only=True
+        #)
+        #youtube.download('http://youtu.be/pzKerr0JIPA', info_only=True)
+        #youtube.download(
+        #    'http://www.youtube.com/attribution_link?u=/watch?v%3DldAKIzq7bvs%26feature%3Dshare',  # noqa
+        #    info_only=True
+        #)
+        #youtube.download(
+        #    'https://www.youtube.com/watch?v=oRdxUFDoQe0', info_only=True
+        #)
 
     def test_acfun(self):
-        acfun.download('https://www.acfun.cn/v/ac11701912', info_only=True)
+        acfun.download('https://www.acfun.cn/v/ac44560432', info_only=True)
 
-    def test_bilibil(self):
-        bilibili.download(
-            "https://www.bilibili.com/watchlater/#/BV1PE411q7mZ/p6", info_only=True
-        )
-        bilibili.download(
-            "https://www.bilibili.com/watchlater/#/av74906671/p6", info_only=True
-        )
+    #def test_bilibili(self):
+        #bilibili.download('https://www.bilibili.com/video/BV1sL4y177sC', info_only=True)
 
-    def test_soundcloud(self):
+    #def test_soundcloud(self):
         ## single song
-        soundcloud.download(
-            'https://soundcloud.com/keiny-pham/impure-bird', info_only=True
-        )
+        #soundcloud.download(
+        #    'https://soundcloud.com/keiny-pham/impure-bird', info_only=True
+        #)
         ## playlist
         #soundcloud.download(
         #    'https://soundcloud.com/anthony-flieger/sets/cytus', info_only=True
         #)
 
-    def tests_tiktok(self):
-        tiktok.download('https://www.tiktok.com/@nmb48_official/video/6850796940293164290', info_only=True)
-        tiktok.download('https://t.tiktok.com/i18n/share/video/6850796940293164290/', info_only=True)
-        tiktok.download('https://vt.tiktok.com/UGJR4R/', info_only=True)
+    def test_tiktok(self):
+        tiktok.download('https://www.tiktok.com/@zukky_48/video/7398162058153315605', info_only=True)
+        tiktok.download('https://www.tiktok.com/@/video/7398162058153315605', info_only=True)
+        tiktok.download('https://t.tiktok.com/i18n/share/video/7398162058153315605/', info_only=True)
+        tiktok.download('https://vt.tiktok.com/ZSYKjKt6M/', info_only=True)
 
+    def test_twitter(self):
+        twitter.download('https://twitter.com/elonmusk/status/1530516552084234244', info_only=True)
+        twitter.download('https://x.com/elonmusk/status/1530516552084234244', info_only=True)
+
+    def test_weibo(self):
+        miaopai.download('https://video.weibo.com/show?fid=1034:4825403706245135', info_only=True)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/you-get.json b/you-get.json
index e98e2e8a..adf604dc 100644
--- a/you-get.json
+++ b/you-get.json
@@ -18,13 +18,12 @@
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.2",
-    "Programming Language :: Python :: 3.3",
-    "Programming Language :: Python :: 3.4",
-    "Programming Language :: Python :: 3.5",
-    "Programming Language :: Python :: 3.6",
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Topic :: Internet",
     "Topic :: Internet :: WWW/HTTP",
     "Topic :: Multimedia",