I have been trying to connect an Avacom H5080W camera to NCS for about a week with no success. After reading a post on this forum about another type of camera, I followed the suggestion of downloading ONVIF Device Manager and using it to connect to the camera. It showed me the URL syntax to use: rtsp://admin:[password]@[ipaddress]:10554/tcp/av0_0
Set the Stream Type to RTSP_TCP
Once I did that: Success!
I hope this helps someone else. You can find ONVIF Device Manager with a google search