@zdenek I’ve never been able to get any stream working out of RTSPStream other than OMXPlayer, which is quite dead, sadly. What I’ve done is use an old pi I had lying around to run MotionEyeOS to convert the image, then MMM-EmbedURL to embed the web “Photo” generated by MotionEyeOS. I need a modern solution, but it works.
With RTSPStream going unsupported, I would look for another solution.
That being said, it does appear to have a direct URL = http://user:pass@192.168.X.X/axis-cgi/mjpg/video.cgi
If that produces a image stream DIRECTLY IN A BROWSER, you can use MMM-EmbedURL and the like to point directly at that and bam you’ve got it without a fuss. If it attempts to load a video player, no dice.