#v4l2

[skywalkerquan]

virtual cam

sudo apt-get -y install build-essential checkinstall wget https://github.com/umlaeute/v4l2loopback/archive/master.zip unzip master.zip cd v4l2loopback-master make sudo checkinstall --pkgname=v4l2loopback --pkgversion="$(date +%Y%m%d%H%M)-git" --default sudo modprobe v4l2loopback exclusive_caps=1 echo "v4l2loopback exclusive_caps=1 " | sudo tee -a /etc/modules

Now run ffmpeg. Example for desktop:

ffmpeg -f x11grab -framerate 15 -video_size 1280x720 -i :0.0 -f v4l2 /dev/video0

Example for a video input:

ffmpeg -re -i input.mp4 -map 0:v -f v4l2 /dev/video0

You can view it with ffplay:

ffplay /dev/video0