Network Video Recorders (NVRs) are designed for recording digital internet protocol video streams that are captured via analog cameras with IP encoders, or IP cameras with an integral digital video stream. They are in contrast with digital video recorders (DVRs). NVRs employ digital storage, a database with further metadata, an operating system, and a network interface. NVRS are less expensive, more reliable, provide better image quality, and are more flexible in their application and availability.
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