[youtube] fix the order of DASH formats

youtube_dl/extractor/youtube.py

@@ -155,19 +155,22 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
     # Listed in order of quality
     _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13',
                           '95', '94', '93', '92', '132', '151',
-                          '85', '84', '102', '83', '101', '82', '100',        # 3D
-                          '138', '137', '136', '135', '134', '133', '160',    # Dash video mp4
-                          '141', '140', '139',                                # Dash auido mp4
-                          '248', '247', '246', '245', '244', '243', '242',    # Dash video webm
-                          '172', '171',                                       # Dash audio webm
+                          # 3D
+                          '85', '84', '102', '83', '101', '82', '100',
+                          # Dash video
+                          '138', '137', '248', '136', '247', '135', '246',
+                          '245', '244', '134', '243', '133', '242', '160',
+                          # Dash audio
+                          '141', '172', '140', '171', '139',
                           ]
     _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13',
                                       '95', '94', '93', '92', '132', '151',
                                       '85', '102', '84', '101', '83', '100', '82',
-                                      '248', '247', '246', '245', '244', '243', '242',    # Dash video webm
-                                      '172', '171',                                       # Dash audio webm
-                                      '138', '137', '136', '135', '134', '133', '160',    # Dash video mp4
-                                      '141', '140', '139',                                # Dash auido mp4
+                                      # Dash video
+                                      '138', '248', '137', '247', '136', '246', '245',
+                                      '244', '135', '243', '134', '242', '133', '160',
+                                      # Dash audio
+                                      '172', '141', '171', '140', '139',
                                       ]
     _video_extensions = {
         '13': '3gp',