Sometims you just need to have a local RTSP stream to test your software against. The attached script start-rtsp-stream.sh does just that. It requires Docker and ffmpeg and can be launched with zero arguments to give you an RTSP stream of a looped video:
$ ./start-rtsp-stream.sh
Stopping server (if running)...
Starting simple RTSP server...
Starting video stream at: rtsp://localhost:8554/live.stream