#EXTM3U
#EXT-X-VERSION:7
#EXT-X-KEY:METHOD=NONE
#EXT-X-SESSION-KEY:METHOD=SAMPLE-AES,URI="k"
#EXT-X-STREAM-INF:BANDWIDTH=1
a.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2,CODECS="hvc1.1.6.L93.B0,mp4a.40.2"
b.m3u8