I just bought a couple of Reolink RLC-810A cameras, and realized too late (after receiving them) that they require an app just to enable communications and configure the baseline RTSP functionality. Claude found https://github.com/TinKurbatoff/reolink-init# and took care of the issue nicely.

I will probably buy a couple more of the RLC-810As, since I can only assume that newer models will be harder for the owner to actually own.