A digital video recorder (DVR) records motion video is a device that records video in a digital format to a disk drive or other memory medium within a device. This can include various models such as stand-alone, PC, television, cable or satellite. Sizes include small, portable, desktop, industrial and commercial. Software enables personal computers to extract segments of video for playback from the hard disk. Closed circuit television (CCTV) has replaced analog VCR’s with digital video recorders. These electronic devices formerly stored images on magnetic videotape for playback. Video cassette recorders have been replaced by technology with digital video recorders. The result is a pure digital picture of the highest quality for playback, recording and video archiving. Digital Video Recorders come in various channel camera inputs. starting with 1 channel DVR and can go up to 64 channels.