Network Video Recorder (NVR)

How NVR Differs From DVR

Network video recorders are distinct from digital video recorders (DVR) because their input comes from a network rather than a direct connection to a video capture card or tuner. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera itself, then streamed to the NVR for storage or remote viewing. Additional processing — such as further compression or metadata tagging — may also happen at the NVR.

Hybrid NVR/DVR surveillance systems also exist which combine functions of both. NVR-based home and office surveillance systems are generally wireless, easy to set up, accessible through a web browser, and can notify you by email if an alarm is triggered.