[bloodhand]

TS, MKV, MP4 they are all container format, video inside is avc/x264/h264. Any format you choose in ffmpeg should work the same. I always save m3u8 as mp4. "-i" is the input command. Whitelisting is used to avoid any errors, try without those and you'll see it won't work. No linux code, just ffmpeg code for protocols used, default they are off, so you must turn them on by that command.