Diagram comparing an NVR connected to dome cameras by thin Ethernet cables with a DVR connected to bullet cameras by thick coaxial cables

NVR vs. DVR: Which Recorder Your Camera System Needs

An NVR records IP cameras that encode video inside the camera; a DVR records analog cameras and encodes the signal itself. Cabling, PoE, distance limits, 4K frame rate and audio all follow from that one difference – including why existing coax is a real reason to stay on a DVR.

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