A network video recorder (NVR) is a specialized computer system that includes a software program[1] that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware. However, the software is typically run on a dedicated device, usually with an embedded operating system. Alternatively, to help support increased functionality and serviceability, standard operating systems are used with standard processors and video management software. An NVR is typically deployed in an IP video surveillance system.
Dahua, AI series NVR, 16 channels, 1U, 16PoE 4K & H.265, port 1-8 supports ePoE & EyC, up to 16 channel perimeter protection, video-assisted face detection up to 4 channels, up to 24 faces/sec processing, supports up to 20 face databases with a total of 100.000 photos