What is an NVR, how does it work, and why use it?
A network video recorder, or NVR, is a computer system that records security footage and stores it on the hard drive. The differences between the NVR and DVR are how cameras connect to the recorder and how each system processes video. For example, the video is encoded and processed at the recorder on a DVR. Whereas, in an NVR setup, the camera processes the video and streams it to the recorder where it can be stored or viewed remotely.
IP cameras work best with NVRs and connect to the recorder using an ethernet cable, and plugs into a network switch that connects to a Windows-based computer or server. Furthermore, remote access is possible through the camera’s IP address. An NVR is a good fit for small to medium-sized businesses that want to leverage an existing network setup.
IP cameras use a network to receive and send image data and connect through a local area network with ethernet cables.
The Windows-based DVR vs the Embedded DVR
A Windows-based DVR is just what its name implies – a computer with a video capture card, running Windows OS. Like the DVR, the system receives video from the cameras and works in conjunction with the recording software.
An embedded DVR has similar features as a Windows-based DVR system does. An embedded DVR has a fixed number of camera inputs and runs typically on Linux OS. However, image quality remains the same for both Windows-based and embedded DVR systems.