NVR stands for Network Video Recorder. NVR systems record and store video footage directly from the network it lives on. These systems work with an advanced type of camera, called IP cameras. IP cameras can actually capture and process video and audio data themselves. The basic function of the network video recorder is to ensure remote access to a live video stream from the Internet Protocol camera along with the simultaneous recording. It is a truly digital system and records the digital images or videos received over the network onto a hard disk or another storage device.