[youtube] Workaround for get_video_info request (refs #29333)

See https://github.com/ytdl-org/youtube-dl/issues/29333#issuecomment-864049544

youtube_dl/extractor/youtube.py

@@ -1512,6 +1512,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                         'video_id': video_id,
                         'eurl': 'https://youtube.googleapis.com/v/' + video_id,
                         'html5': 1,
+                        # See https://github.com/ytdl-org/youtube-dl/issues/29333#issuecomment-864049544
+                        'c': 'TVHTML5',
+                        'cver': '6.20180913',
                     }, fatal=False)),
                 lambda x: x['player_response'][0],
                 compat_str) or '{}', video_id)