Why One of Camera Can not Show Video successfully?
1. Check whether the distance between camera and NVR is too long.
2. Go to video manage---delete the IP which connected failed.
3. Power on camera and connect camera near to NVR via a network cable, check whether the indicator of network port is blinking, then match code again.
4. Send your version of NVR and camera to the support for upgrade file and upgrade them.