I’d take a look at the thread below. Once digest authentication became a requirement, I’ve only been able to get RTSP to work. I have a beta version working with digest if you want to give it a go. Just send me a PM. It’s slow but works for me.
First off: If You’ve updated your firmware, they’re removed the feature.
It does work in most browsers. I only tried with chrome, edge, and firefox. I don’t know the default (and it looks like I’d have to reset my camera to find out). You’ll be able to find it in the amcrest settings. Looks like this:
