#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3000000,RESOLUTION=1280x720
high/live.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=512000
mid/live.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=128000
low/live.m3u8