https://www.myfreax.com/how-to-use-scrcpy-to-remotely-control-an-android-phone/
https://github.com/Genymobile/scrcpy
scrcpy --v4l2-sink=/dev/video2
docker run -d -p 1935:1935 --name nginx-rtmp tiangolo/nginx-rtmp
ffmpeg -framerate 15 -i /dev/vi[......]