The CCTV Digital Video Recorder (DVR) and the Network Video recorder (NVR) have developed rapidly over the last few years. Many leading manufacturers are bringing out new, significantly improved specification models all promoting state-of-the-art technology. Technically solid manufacture, faultless reliability and user-friendly operation are vital features that every type of DVR/NVR must have at its core.
A quick guide to DVRs and NVRs
DVR – Digital Video Recorder – This records video in a digital format to a disk drive. Video footage from a CCTV camera is sent to a DVR, where it is encoded and processed.
NVR – Network Video Recorder – is a software program that records video in a digital format to memory cards, or a mass storage device. Video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage and viewing. An NVR is used with an IP (Internet Protocol) security system. With the increase in use of IP cameras, many DVRs are now ‘hybrid’ units able to handle both analogue and IP camera inputs. An ‘IP only’ system requires an NVR with no analogue inputs.
The NVR will record IP streams from cameras placed anywhere on an IP Network. Accessed and controlled by sophisticated software running on multiple PCs across the network, the NVR easily integrates with other CCTV, analytical and security systems. This system therefore lends itself to very easy and flexible expansion.
Secure Engineering can help your company with the supply, installation and ongoing support of DVRs and NVRs. Our recommendations are based on continued testing and years of experience. Every DVR and NVR that we recommend is network capable and can be accessed on a local network or via the Internet.