https://askubuntu.com/questions/881305/is-there-any-way-ffmpeg-send-video-to-dev-video0-on-ubuntu

https://askubuntu.com/questions/1243157/redirect-two-webcam-to-a-virtual-camera-using-ffmpeg

https://stackoverflow.com/questions/61990828/how-to-redirect-an-audio-stream-to-a-virtual-pulseaudio-microphone-with-ffmpeg

https://unix.stackexchange.com/questions/349689/create-virtual-microphone-and-output-sound-to-it




http://iptv.tivifa.com:8000/live/hypanel/hyP@ss@123/141987.m3u8







http://51.15.139.108/hls/stream.m3u8
http://iptv.tivifa.com:8000/live/hypanel/hyP@ss@123/105008.m3u8





$ ffmpeg -i file.mkv -itsoffset 3 -i file.mkv -c:a copy -c:v copy -map 0:v:0 -f v4l2 /dev/video0 -map 1:a:0 out.mkv


-vf scale=1280:720 -vcodec libx264 -preset veryfast -acodec aac -strict experimental


v4l2loopback-ctl set-fps /dev/video0 25