[youtube] Clarify rationale for preferring a video info with token (#7362)
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		| @@ -1107,6 +1107,15 @@ class YoutubeIE(YoutubeBaseInfoExtractor): | ||||
|                     if not video_info: | ||||
|                         video_info = get_video_info | ||||
|                     if 'token' in get_video_info: | ||||
|                         # Different get_video_info requests may report different results, e.g. | ||||
|                         # some may report video unavailability, but some may serve it without | ||||
|                         # any complaint (see https://github.com/rg3/youtube-dl/issues/7362, | ||||
|                         # the original webpage as well as el=info and el=embedded get_video_info | ||||
|                         # requests report video unavailability due to geo restriction while | ||||
|                         # el=detailpage succeeds and returns valid data). This is probably | ||||
|                         # due to YouTube measures against IP ranges of hosting providers. | ||||
|                         # Working around by preferring the first succeeded video_info containing | ||||
|                         # the token if no such video_info yet was found. | ||||
|                         if 'token' not in video_info: | ||||
|                             video_info = get_video_info | ||||
|                         break | ||||
|   | ||||
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