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YouTube: fix #135
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Mort Yao
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@ -4,13 +4,95 @@ __all__ = ['youtube_download', 'youtube_download_by_id']
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from ..common import *
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import json
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# YouTube media encoding options, in descending quality order.
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# taken from http://en.wikipedia.org/wiki/YouTube#Quality_and_codecs, 3/22/2013.
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youtube_codecs = [
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{'itag': 38, 'container': 'MP4', 'video_resolution': '3072p', 'video_encoding': 'H.264', 'video_profile': 'High', 'video_bitrate': '3.5-5', 'audio_encoding': 'AAC', 'audio_bitrate': '192'},
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{'itag': 46, 'container': 'WebM', 'video_resolution': '1080p', 'video_encoding': 'VP8', 'video_profile': '', 'video_bitrate': '', 'audio_encoding': 'Vorbis', 'audio_bitrate': '192'},
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{'itag': 37, 'container': 'MP4', 'video_resolution': '1080p', 'video_encoding': 'H.264', 'video_profile': 'High', 'video_bitrate': '3-4.3', 'audio_encoding': 'AAC', 'audio_bitrate': '192'},
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{'itag': 102, 'container': '', 'video_resolution': '', 'video_encoding': 'VP8', 'video_profile': '', 'video_bitrate': '2', 'audio_encoding': 'Vorbis', 'audio_bitrate': '192'},
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{'itag': 45, 'container': 'WebM', 'video_resolution': '720p', 'video_encoding': '', 'video_profile': '', 'video_bitrate': '', 'audio_encoding': '', 'audio_bitrate': ''},
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{'itag': 22, 'container': 'MP4', 'video_resolution': '720p', 'video_encoding': 'H.264', 'video_profile': 'High', 'video_bitrate': '2-2.9', 'audio_encoding': 'AAC', 'audio_bitrate': '192'},
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{'itag': 84, 'container': 'MP4', 'video_resolution': '720p', 'video_encoding': 'H.264', 'video_profile': '3D', 'video_bitrate': '2-2.9', 'audio_encoding': 'AAC', 'audio_bitrate': '152'},
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{'itag': 120, 'container': 'FLV', 'video_resolution': '720p', 'video_encoding': 'AVC', 'video_profile': 'Main@L3.1', 'video_bitrate': '2', 'audio_encoding': 'AAC', 'audio_bitrate': '128'},
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{'itag': 85, 'container': 'MP4', 'video_resolution': '520p', 'video_encoding': 'H.264', 'video_profile': '3D', 'video_bitrate': '2-2.9', 'audio_encoding': 'AAC', 'audio_bitrate': '152'},
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{'itag': 44, 'container': 'WebM', 'video_resolution': '480p', 'video_encoding': 'VP8', 'video_profile': '', 'video_bitrate': '1', 'audio_encoding': 'Vorbis', 'audio_bitrate': '128'},
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{'itag': 35, 'container': 'FLV', 'video_resolution': '480p', 'video_encoding': 'H.264', 'video_profile': 'Main', 'video_bitrate': '0.8-1', 'audio_encoding': 'AAC', 'audio_bitrate': '128'},
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{'itag': 101, 'container': 'WebM', 'video_resolution': '360p', 'video_encoding': 'VP8', 'video_profile': '3D', 'video_bitrate': '', 'audio_encoding': 'Vorbis', 'audio_bitrate': '192'},
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{'itag': 100, 'container': 'WebM', 'video_resolution': '360p', 'video_encoding': 'VP8', 'video_profile': '3D', 'video_bitrate': '', 'audio_encoding': 'Vorbis', 'audio_bitrate': '128'},
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{'itag': 43, 'container': 'WebM', 'video_resolution': '360p', 'video_encoding': 'VP8', 'video_profile': '', 'video_bitrate': '0.5', 'audio_encoding': 'Vorbis', 'audio_bitrate': '128'},
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{'itag': 34, 'container': 'FLV', 'video_resolution': '360p', 'video_encoding': 'H.264', 'video_profile': 'Main', 'video_bitrate': '0.5', 'audio_encoding': 'AAC', 'audio_bitrate': '128'},
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{'itag': 82, 'container': 'MP4', 'video_resolution': '360p', 'video_encoding': 'H.264', 'video_profile': '3D', 'video_bitrate': '0.5', 'audio_encoding': 'AAC', 'audio_bitrate': '96'},
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{'itag': 18, 'container': 'MP4', 'video_resolution': '270p/360p', 'video_encoding': 'H.264', 'video_profile': 'Baseline', 'video_bitrate': '0.5', 'audio_encoding': 'AAC', 'audio_bitrate': '96'},
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{'itag': 6, 'container': 'FLV', 'video_resolution': '270p', 'video_encoding': 'Sorenson H.263', 'video_profile': '', 'video_bitrate': '0.8', 'audio_encoding': 'MP3', 'audio_bitrate': '64'},
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{'itag': 83, 'container': 'MP4', 'video_resolution': '240p', 'video_encoding': 'H.264', 'video_profile': '3D', 'video_bitrate': '0.5', 'audio_encoding': 'AAC', 'audio_bitrate': '96'},
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{'itag': 13, 'container': '3GP', 'video_resolution': '', 'video_encoding': 'MPEG-4 Visual', 'video_profile': '', 'video_bitrate': '0.5', 'audio_encoding': 'AAC', 'audio_bitrate': ''},
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{'itag': 5, 'container': 'FLV', 'video_resolution': '240p', 'video_encoding': 'Sorenson H.263', 'video_profile': '', 'video_bitrate': '0.25', 'audio_encoding': 'MP3', 'audio_bitrate': '64'},
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{'itag': 36, 'container': '3GP', 'video_resolution': '240p', 'video_encoding': 'MPEG-4 Visual', 'video_profile': 'Simple', 'video_bitrate': '0.17', 'audio_encoding': 'AAC', 'audio_bitrate': '38'},
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{'itag': 17, 'container': '3GP', 'video_resolution': '144p', 'video_encoding': 'MPEG-4 Visual', 'video_profile': 'Simple', 'video_bitrate': '0.05', 'audio_encoding': 'AAC', 'audio_bitrate': '24'},
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]
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def parse_video_info(raw_info):
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"""Parser for YouTube's get_video_info data.
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Returns a map, with 'url_encoded_fmt_stream_map' field being a sorted list.
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"""
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# Percent-encoding reserved characters, used as separators.
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separator = {
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'&': '%26',
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'=': '%3D',
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}
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# fmt_level = {'itag': level, ...}
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# itag of a higher quality maps to a lower level number.
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# The highest quality has level number 0.
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fmt_level = dict(
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zip(
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[str(codec['itag'])
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for codec in
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youtube_codecs],
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range(len(youtube_codecs))))
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return dict(
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[(lambda metadata:
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['url_encoded_fmt_stream_map', (
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lambda url_encoded_fmt_stream_map:
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sorted(
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[dict(
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[sub_item.split(separator['='])
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for sub_item in
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item.split(separator['&'])])
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for item in
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url_encoded_fmt_stream_map.split('%2C')],
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key =
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lambda stream:
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fmt_level[stream['itag']]))
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(metadata[1])]
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if metadata[0] == 'url_encoded_fmt_stream_map'
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else metadata)
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(item.split('='))
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for item in
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raw_info.split('&')])
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def youtube_download_by_id(id, title = None, output_dir = '.', merge = True, info_only = False):
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html = request.urlopen('http://www.youtube.com/watch?v=' + id).read().decode('utf-8')
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raw_info = request.urlopen('http://www.youtube.com/get_video_info?video_id=%s' % id).read().decode('utf-8')
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video_info = parse_video_info(raw_info)
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if video_info['status'] == 'ok': # use get_video_info data
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title = parse.unquote(video_info['title'].replace('+', ' '))
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signature = video_info['url_encoded_fmt_stream_map'][0]['sig']
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url = parse.unquote(parse.unquote(video_info['url_encoded_fmt_stream_map'][0]['url'])) + "&signature=%s" % signature
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else: # parse video page when "embedding disabled by request"
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import json
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html = request.urlopen('http://www.youtube.com/watch?v=' + id).read().decode('utf-8')
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html = unescape_html(html)
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yt_player_config = json.loads(r1(r'yt.playerConfig = ([^\n]+);\n', html))
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yt_player_config = json.loads(r1(r'ytplayer.config = ([^\n]+);', html))
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title = yt_player_config['args']['title']
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title = unicodize(title)
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title = parse.unquote(title)
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@ -25,10 +107,7 @@ def youtube_download_by_id(id, title = None, output_dir = '.', merge = True, inf
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'85',
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'44', '35',
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'101', '100', '43', '34', '82', '18',
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'6',
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'83', '5', '36',
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'17',
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'13',
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'6', '83', '13', '5', '36', '17',
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]:
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fmt = r1(r'([^,\"]*itag=' + itag + "[^,\"]*)", html)
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if fmt:
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@ -41,7 +120,7 @@ def youtube_download_by_id(id, title = None, output_dir = '.', merge = True, inf
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try:
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url
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except NameError:
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url = r1(r'crossdomain.xml"\);yt.preload.start\("([^"]+)"\)', html)
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url = r1(r'ytdns.ping\("([^"]+)"[^;]*;</script>', html)
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url = unicodize(url)
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url = re.sub(r'\\/', '/', url)
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url = re.sub(r'generate_204', 'videoplayback', url)
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