A central video recorder is an essential component of any security camera. It helps to transmit and archive captured image. Central video recorders have evolved from the older VCR models, to Digital Video Recorders (DVR) to the most current Network Video Recorders (NVR). In this article, we discuss all the aspects you should take into account when choosing between Network Video Recorders and Digital Video Recorders. Recording Resolution Digital Video Recorders (DVRs) offer a “D1” resolution that is equal to a resolution of 720 x480 pixels. This pixel is considered a standard resolution that can be recorded and displayed on a playback monitor. The current Network Video Recorders (NVR) can record a High Definition (HD) of 1080p. This video recorder is an improvement of the DVR system, and has a pixel resolution of 1920 x1080 pixels. The NVRs offer a cleaner, clearer recorded video image. Camera Connections NVRs are compatible with IP cameras and offer lots of benefits over the DVRs. This is because NVR system record high quality videos in a digital format encoded at the camera before being transmitted online to the video recorder. Network Video Recorders are also compatible with wireless cameras and can be scaled up much more easily that the DVR systems. Network Video Recorder systems have a software program to record video footage. Digital Video Recorders, on the other hand, encode video signals at the recorder, not at the camera. DVRs are also limited by the distance between the video recorder and the camera as well as by and number of cameras. Network Video Recorders can be installed anywhere on the internet and be programmed to sync with designated cameras while DVRs are connected to a limited number of cameras using hardwires. To connect an analog camera with a DVR, you need to plug a BNC coaxial cable from the DVR into the camera. You will require additional coaxial cables to connect more cameras to the DVR system. Expansions of these systems are difficult since after all the BNC connections on the DVR are occupied, you will have to buy another DVR before adding another camera to system. To avoid degradation of video, the DVR system must be installed within approximately 500 feet of the DVR. You may also have to buy a video signal amplifier. Lastly, since DVR systems do not provide power via cable connections attached to the camera, you may have to invest in additional equipment for supplying power to your cameras. A Network Video Recording system eliminates all these shortcomings as it connects directly to the network. The process of setting up an NVR unit is simpler than DVR unit as you can easily add more cameras to the network. Some cameras are Wi-Fi enabled allowing them to transmit footage directly to video record. Proximity is not a limiting issue; provided the camera is connected to the same network as the NVR. Camera Compatibility Different types of security cameras require different types of video records. Digital Video Recorders work well with analog cameras, while the Network Video Records are compatible with IP cameras. Before purchasing a video, ensure the unit works well with the cameras you have bought. If you have any doubts, consider consulting an experienced video surveillance personnel.
1 Comment
10/5/2022 08:43:13 am
I appreciated you pointing out that a Network Video Recording system links directly to the network. My friend wants an advanced security camera system in their building. I should advise him to look for a firm that provides high-tech audio and video.
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