The hard disk video recorder has BNC and VGA video output, and can be used with TV, monitor, computer monitor and other display devices. Some manufacturers integrate the display screen and hard disk video recorder.

Video viewing includes real-time video viewing and video playback.

The hard disk video recorder is a digital video recorder. Compared with the traditional analog video recorder, the hard disk video recorder is used for recording, so it is often called the hard disk video recorder, also called DVR.