It is set by default to 1080p.That XVR is rated at 1080p recording, that CVI camera is 4MP, that could be your problem. You could try setting the resolution on the camera in the XVR interface to 1080p...
Thanks, I will try today.To access the camera's OSD menu follow these steps.
Choose the camera on your XVR, double click to bring to full screen, then follow the steps. You may see black instead of an image, thats ok, you should still be able to access the OSD menmu.