#EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:2 #EXT-X-MEDIA-SEQUENCE:844543 #EXTINF:1.034367, bgmusic_794613_850k3.ts #EXTINF:0.800800, bgmusic_794613_850k4.ts #EXTINF:1.768433, bgmusic_794613_850k5.ts #EXTINF:0.834167, bgmusic_794613_850k6.ts #EXTINF:1.134467, bgmusic_794613_850k7.ts