http://gitunderground.i2p/archive/youtube-dl/src/branch/master/youtube_dl/extractor/douyutv.py
_extract_m3u8_formats ( video_info [ 'data' ][ 'video_url' ], video_id , entry_protocol = 'm3u8_native' , ext = 'mp4' ) upload_date = unified_strdate ( self . _html_search_regex ( r '<em>上传时间:</em><span>([^<]+)</span>' , webpage , 'upload date' , fatal = False )) uploader = uploader_id = uploader_url = None mobj = re . search ( r '(?