diff --git a/src/you_get/common.py b/src/you_get/common.py
index 90e628c7..1831c8cb 100755
--- a/src/you_get/common.py
+++ b/src/you_get/common.py
@@ -1161,6 +1161,7 @@ def script_main(script_name, download, download_playlist, **kwargs):
             output_dir = a
         elif o in ('-p', '--player'):
             player = a
+            caption = False
         elif o in ('-x', '--http-proxy'):
             proxy = a
         elif o in ('-y', '--extractor-proxy'):
diff --git a/src/you_get/processor/ffmpeg.py b/src/you_get/processor/ffmpeg.py
index 7262c462..e4ea1223 100644
--- a/src/you_get/processor/ffmpeg.py
+++ b/src/you_get/processor/ffmpeg.py
@@ -2,6 +2,7 @@
 
 import os.path
 import subprocess
+from ..util.strings import parameterize
 
 def get_usable_ffmpeg(cmd):
     try:
@@ -53,7 +54,7 @@ def ffmpeg_concat_mp4_to_mpg(files, output='output.mpg'):
         concat_list = open(output + '.txt', 'w', encoding="utf-8")
         for file in files:
             if os.path.isfile(file):
-                concat_list.write("file '%s'\n" % file)
+                concat_list.write("file %s\n" % parameterize(file))
         concat_list.close()
 
         params = [FFMPEG] + LOGLEVEL
@@ -118,7 +119,7 @@ def ffmpeg_concat_flv_to_mp4(files, output='output.mp4'):
             if os.path.isfile(file):
                 # for escaping rules, see:
                 # https://www.ffmpeg.org/ffmpeg-utils.html#Quoting-and-escaping
-                concat_list.write("file '%s'\n" % file.replace("'", r"'\''"))
+                concat_list.write("file %s\n" % parameterize(file))
         concat_list.close()
 
         params = [FFMPEG] + LOGLEVEL + ['-f', 'concat', '-y', '-i']
@@ -163,7 +164,7 @@ def ffmpeg_concat_mp4_to_mp4(files, output='output.mp4'):
         concat_list = open(output + '.txt', 'w', encoding="utf-8")
         for file in files:
             if os.path.isfile(file):
-                concat_list.write("file '%s'\n" % file)
+                concat_list.write("file %s\n" % parameterize(file))
         concat_list.close()
 
         params = [FFMPEG] + LOGLEVEL + ['-f', 'concat', '-y', '-i']
diff --git a/src/you_get/util/strings.py b/src/you_get/util/strings.py
index 7e74f35e..26d55594 100644
--- a/src/you_get/util/strings.py
+++ b/src/you_get/util/strings.py
@@ -1,25 +1,28 @@
 try:
-  # py 3.4
-  from html import unescape as unescape_html
+    # py 3.4
+    from html import unescape as unescape_html
 except ImportError:
-  import re
-  from html.entities import entitydefs
+    import re
+    from html.entities import entitydefs
 
-  def unescape_html(string):
-    '''HTML entity decode'''
-    string = re.sub(r'&#[^;]+;', _sharp2uni, string)
-    string = re.sub(r'&[^;]+;', lambda m: entitydefs[m.group(0)[1:-1]], string)
-    return string
+    def unescape_html(string):
+        '''HTML entity decode'''
+        string = re.sub(r'&#[^;]+;', _sharp2uni, string)
+        string = re.sub(r'&[^;]+;', lambda m: entitydefs[m.group(0)[1:-1]], string)
+        return string
 
-  def _sharp2uni(m):
-    '''&#...; ==> unicode'''
-    s = m.group(0)[2:].rstrip(';；')
-    if s.startswith('x'):
-      return chr(int('0'+s, 16))
-    else:
-      return chr(int(s))
+    def _sharp2uni(m):
+        '''&#...; ==> unicode'''
+        s = m.group(0)[2:].rstrip(';；')
+        if s.startswith('x'):
+            return chr(int('0'+s, 16))
+        else:
+            return chr(int(s))
 
 from .fs import legitimize
 
 def get_filename(htmlstring):
-  return legitimize(unescape_html(htmlstring))
+    return legitimize(unescape_html(htmlstring))
+
+def parameterize(string):
+    return "'%s'" % string.replace("'", r"'\''")
diff --git a/src/you_get/version.py b/src/you_get/version.py
index a9872b96..d8db720e 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__ = '0.4.350'
+__version__ = '0.4.365'