I don’t have an Amcrest, so I haven’t used it or many of the other branded camera integrations. I’m guessing that most of them are just reusing the other options here as they are mostly just opening an RTSP, ONVIF, or MJPEG camera stream, but they may have special implementations. Too many of those to test, I have only tried the ones which apply to a Hikvision, which is what I have.