Reolink
rtsp://admin:PASSWORD@192.168.1.x:554/h264Preview_01_main
Hikvision
rtsp://admin:PASSWORD@192.168.1.x:554/Streaming/Channels/101
Dahua
rtsp://admin:PASSWORD@192.168.1.x:554/cam/realmonitor?channel=1&subtype=0
Generic ONVIF
Use ONVIF auto-discover — LookoutNVR finds the URL automatically