By default rtsp-simple-server, doesn't include FFmpeg. With this small repo, we have extended the rtsp-simple-server Dockerfile, with FFMpeg support.
Next to that a multi-arch build is ran through GitHub actions. The docker images are hosted on Docker Hub.
You can build the Dockerfile using the build command.
docker build -t kerberos/rtsp-simple-server .
For more information how to leverage the rtsp-simple-server have a look at the camera-to-rtsp repository, which illustrates how to convert USB and RPi cameras to a rtsp h264 stream.
docker run --network=host \
-d --privileged \
-v $PWD/rtsp-simple-server.yml:/rtsp-simple-server.yml \
kerberos/rtsp-simple-server