Network Video Recorder
A Network Video Recorder, or NVR is an internet protocol (IP) based device that sits on your computer network. Since the NVR sits on your computer network, Network Video Recorders can be accessed and managed remotely via your Local Area Network (LAN) or over the Internet, allowing you greater flexibility. One of the basic functions of a NVR is the simultaneous recording and remote access of live video streams from your IP cameras.
One the attractions to Network Video Recorders is their ease of use and installation. Typically, a Network Video Recorder will feature advanced recording and playback capability, an intuitive remote control unit, a user-friendly graphical user interface (GUI), Intelligent Motion Detection, and PTZ camera control.
NVRs are designed to handle the vast amounts of simultaneous video streams coming in for recording and rebroadcasting the same feed out live to client machines locally or remotely.
New generation of NVR hardware are now "open platform" systems. They are NVRs that allow the user to run any IP Recording software on the market. They usually support a Windows or Linux environment. They are now rack mountable units that are at a minimum of 1U in size. These open platform NVRs allow for flexibility and scalability when deploying an enterprise level camera system. The restriction on dedicated hardware are lessened in this new generation of NVRs so that maintenance is kept at an affordable price.
NVR is used in IP video surveillance systems. Because of the nature of these units, a camera that is capable of capturing High Resolution (Mega Pixel cameras) will record and playback as that desired resolution unlike a DVR system. Hybrid DVR security systems exist which incorporate functions of both NVR and DVR.