http://gitunderground.i2p/archive/youtube-dl/commit/d947ffe8e385a541f44c6125b4cbc269de6055a4
_extract_f4m_formats ( f4m_url , video_id , f4m_id = ' hds ' , fatal = False ) ) for asset in ( video . get ( ' assets ' ) or [ ] ) : asset_url = asset . get ( ' url ' ) if not asset_url : continue formats . append ( { ' url ' : asset_url , ' tbr ' : int_or_none ( asset . get ( ' bitrate ' ) , 1000 ) , ' fps ' : int_or_none ( asset . get ( ' frame_rate ' ) ) , ' height ' : int_or_none ( asset . get ( ' height ' ) ) , '...