In a video, I saw that after clicking “Add Device”, you can enter the full RTSP URL. To be on the safe side, though, just copy the link from the Aqara Home app.
In Surveillance Station (Synology DSM), I was able to connect my G5 cameras using ONVIF with the IP address and port 5000.
I read that NX Witness should automatically detect ONVIF-enabled cameras. Have you installed the latest firmware for the cameras? Alternatively, you could use a port scanner to check whether port 5000 is open.
Hi finally got somewhere, Added via onvif but cam is showing disconnected. Looks like even though port 5000 was setup NX is still looking for 80, bit weird, will raise issue with NXwitness. RTSP stream motion and audio are working so all good for now.