Fixed problem with new youtube player, leading to "Unable to extract video data".

youtube_dlc/extractor/youtube.py

@@ -1390,6 +1390,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             # https://github.com/ytdl-org/youtube-dl/pull/7599)
             r';ytplayer\.config\s*=\s*({.+?});ytplayer',
             r';ytplayer\.config\s*=\s*({.+?});',
+            r'ytInitialPlayerResponse\s*=\s*({.+?});var meta'
         )
         config = self._search_regex(
             patterns, webpage, 'ytplayer.config', default=None)
@@ -1416,10 +1417,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             self._downloader.report_warning(err_msg)
             return {}
         try:
+            if "args" in player_config and "ttsurl" in player_config["args"]:
                 args = player_config['args']
-            caption_url = args.get('ttsurl')
-            if caption_url:
+                caption_url = args['ttsurl']
                 timestamp = args['timestamp']
+
                 # We get the available subtitles
                 list_params = compat_urllib_parse_urlencode({
                     'type': 'list',
@@ -1475,11 +1477,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 return captions
 
             # New captions format as of 22.06.2017
-            player_response = args.get('player_response')
-            if player_response and isinstance(player_response, compat_str):
+            if "args" in player_config:
+                player_response = player_config["args"].get('player_response')
+            else:
+                # New player system (ytInitialPlayerResponse) as of October 2020
+                player_response = player_config
+
+            if player_response:
+                if isinstance(player_response, compat_str):
                     player_response = self._parse_json(
                         player_response, video_id, fatal=False)
-                if player_response:
+
                 renderer = player_response['captions']['playerCaptionsTracklistRenderer']
                 caption_tracks = renderer['captionTracks']
                 for caption_track in caption_tracks:
@@ -1496,6 +1504,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
                 self._downloader.report_warning("Couldn't find automatic captions for %s" % video_id)
                 return {}
+
+            if "args" in player_config:
+                args = player_config["args"]
+
                 # Some videos don't provide ttsurl but rather caption_tracks and
                 # caption_translation_languages (e.g. 20LmZk1hakA)
                 # Does not used anymore as of 22.06.2017
@@ -1784,7 +1796,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     # Try looking directly into the video webpage
                     ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
                     if ytplayer_config:
-                        args = ytplayer_config['args']
+                        args = ytplayer_config.get("args")
+                        if args is not None:
                             if args.get('url_encoded_fmt_stream_map') or args.get('hlsvp'):
                                 # Convert to the same format returned by compat_parse_qs
                                 video_info = dict((k, [v]) for k, v in args.items())
@@ -1799,6 +1812,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                                 is_live = True
                             if not player_response:
                                 player_response = extract_player_response(args.get('player_response'), video_id)
+                        elif not player_response:
+                            player_response = ytplayer_config
                     if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
                         add_dash_mpd_pr(player_response)
                 else:
@@ -1828,8 +1843,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             age_gate = False
             # Try looking directly into the video webpage
             ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
-            if ytplayer_config:
-                args = ytplayer_config['args']
+            args = ytplayer_config.get("args")
+            if args is not None:
                 if args.get('url_encoded_fmt_stream_map') or args.get('hlsvp'):
                     # Convert to the same format returned by compat_parse_qs
                     video_info = dict((k, [v]) for k, v in args.items())
@@ -1844,6 +1859,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     is_live = True
                 if not player_response:
                     player_response = extract_player_response(args.get('player_response'), video_id)
+            elif not player_response:
+                player_response = ytplayer_config
             if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
                 add_dash_mpd_pr(player_response)