Network Video Recorder

A Digital Video Recorder (DVR), sometimes refferred to by the merchandising term Personal Video Recorder (PVR), is a consumer electronics device or application software that records video in a digital format to a disk drive, USB flash drive, SD memory card or other local or networked mass storage device. The term includes Set-Top Boxes (STB) with direct to disk recording facility, portable media players (PMP) with recording, recordersas camcorders that record onto Secure Digital memory cards and software for personal computers which enables video capture and playback to and from a hard disk drive.

A Network Video Recorder (NVR) is a software program that records video in adigital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware. However, the software is typically run on a dedicated device, usually with an embedded operating system. An NVR is typically deployed in an IP video surveillance system.

Network video recorders are distinct from digital video recorders as their input is from a network rather than a direct connection to a video capture card ortuner. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage or remote viewing.

Hybrid NVR/DVR security systems exist which incorporate functions of both NVR and DVR; these are considered a form of NVR.

Other Models
4 channel Systems
8 channel Systems
16 channel Systems
32 channel Systems
64 channel Systems