#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=921600,RESOLUTION=1280x720
900.m3u8 
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=614400,RESOLUTION=640x360
600.m3u8 
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=307200,RESOLUTION=320x240
300.m3u8 