Static image fake webcam

This post describes how to create a dummy webcam that will provide stream of static image.

1. Install v4l2loopback.
   Make sure version of current kernel (uname -r) matches the version of kernel-devel package.

2. Activate compiled kernel module

   sudo modprobe v4l2loopback
   

3. Provided previous step created new device /dev/video1, instruct ffmpeg to fed the video device by image data

   ffmpeg -loop 1 -re -i <path-to-the-image> -f v4l2 -vcodec rawvideo -pix_fmt yuv420p /dev/video1
   

Reference: https://github.com/umlaeute/v4l2loopback/wiki/Ffmpeg