Frequently Asked Question
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(Digital Video Recorder) A device that records video from up to a dozen or more surveillance cameras onto a hard disk. The frame rate can be switched from real time to time lapse in order to save storage space. Digital recorders are more flexible than earlier analog VHS tape systems, and the video can be easily transmitted over a computer network. See also CCTV.
Network Video Recorder-As the name suggests, NVR recorders record videos from the network directly using Cat5 or Cat6 Ethernet cables with RJ45 plugs. The NVR system is used with IP (Internet Protocol) cameras.
Closed Circuit Television- A self-contained surveillance system comprising cameras, recorders and displays for monitoring activities in a store or company.
Hybrid Video Recorder- is a combination of the DVR and NVR, which could work with both analog cameras and the IP cameras.
NVR vs DVR sum-up: The biggest difference between NVR and DVR is the cameras and cabling they use. A network video recorder (NVR) records IP cameras wirelessly (for WiFi NVR) or via Ethernet cables (for PoE NVR), while a digital video recorder (DVR) records analog cameras via coaxial cables.
That’s to say, the NVR is for IP cameras recording and the DVR is for analog or coax based cameras recording.
NVR systems use IP cameras which are standalone image capturing devices. IP cameras each have a chipset them which is capable of processing the video data which is then transmitted to a recorder. Unlike analog cameras, IP cameras are typically all capable of recording and sending audio as well as video. The more powerful hardware on IP cameras also enables improved smart functionality and video analytics, such as facial recognition.
The cameras used by a DVR system must be analog security cameras, better known as CCTV cameras. Most of the cost savings found by using a DVR system is due to the camera. In a DVR system, the analog cameras stream an analog signal to the recorder, which then processes the images.
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