Some cams, especially newer cams adding to an older NVR need to be added via ONVIF.
Step 1: Log into the camera.
Enable ONVIF on the camera.
– this video shows you that you need to log in, enable ONVIF, and add a user to the camera under username admin. NOTE only the first 1/2 of the video is relevant. Disregard the part where they log into the 3rd party NVR.Step 2: Add to the NVR manually (not plug and play)
username = admin password = password of the camera (which is likely the same as the NVR if it adopted the NVR password)