http://gitunderground.i2p/archive/youtube-dl/commit/eb3bd7ba8db8a31f5262d2d8f335700d1664a1bf
_request_webpage ( HEADRequest ( video_url ) , video_id , ' Checking video URL ' ) except ExtractorError as e : if isinstance ( e . cause , compat_HTTPError ) and e . cause . code in [ 404 , 410 ] : self . report_warning ( ' Invalid video URL, requesting another ' , video_id ) return self . _extract_video ( video_host , video_id , file_key , video_url , try_num ) return { ' id ' : video_id , ' url ' : video_url , ' title ' : title , ' formats ' : formats , } def _real_extract ( self , url...