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A Network Video Recorder or NVR is an internet protocol based device that sits on a network. Because they are IP based, Network Video Recorders can be managed remotely via a LAN or over the Internet giving greater flexibility. The basic function of an NVR is the simultaneous recording and remote access of live video streams from an IP Camera.
One the trademarks of Network Video Recorders is their ease of use and installation. Typically, a Network Video Recorder will feature flexible recording and playback capability, an optional intuitive remote control unit, a user-friendly GUI, Intelligent Motion Detection, and PTZ camera control.
In relation to recording and play-back, an NVR has some similarities to a Digital Video Recorder. An NVR is a true digital system that receives digital images/video streams over the network and records them on a hard disk in a digital format. Where as a Digital Video Recorders is in fact a hybrid system that can accommodate analog cameras and store the video on a hard disk in digital format. where as Some DVRs have a rudimentary interface to the network that offers remote viewing capabilities. An NVR does not have a dedicated monitor and keyboard. All viewing and management of the NVR takes place remotely over the network via a PC.
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