Network Video Recorder system (NVR) is a specialized system that documents (records) security video surveillance footage in digital format to a hard drive. Using advanced video capture quality, video is typically processed and encoded from the surveillance IP and transferred to the NVR for storage through Ethernet or Wi-Fi network. NVRs are generally employed within IP video surveillance systems. IP cameras work much like today’s technology does. For example, you can send photos from phone to phone, videos from computer to computer and a host of different types of media from one device to another so long as you have an internet connection. Such systems are much more efficient and cost-effective than a DVR, as it requires fewer wires and enables you to place your cameras in locations that would otherwise have been hard to reach. Capability of advance video analytics makes it easy for user to design secured system using NVR.
A digital video recorder (DVR) works with both digital and analog cameras and is connected through a wire from the camera to the recorder. Since the device is wired, it doesn’t require the internet to work. On a DVR system, the camera doesn’t do any of the work, instead, the DVR does. It encodes footage transmitted by the camera into a compressed, digital format and stores it on an hard drive like a memory stick or computer. The analog systems already have coaxial cables in place, so updating an older analog system with a DVR is relatively simple. There are some hybrid systems that utilize both DVRs and network (IP) cameras.
Difference between NVR & DVR
Both, digital video recorders and network video recorders are types of video recording systems used for security cameras. Both systems serve the exact purpose, they capture video footage transmitted from the cameras and store that stream, so you can play it back afterwards. The primary difference between these systems is how they communicate and transmit video data.
In a DVR system, the camera stream is captured from analogue cameras. Since analogue cameras are unable to process video at the source, they pass the raw video feed to the recorder through coaxial cables. The recorder processes and compresses the video into a digital format to be stored on internal hard drive or accessed live. On the other hand, in an NVR system, video is captured with digital, or Internet Protocol cameras. IP cameras process video straight from the camera itself, and then the processed stream is transferred to the recorder via an Ethernet cable or Wi-Fi network. The other difference is the resolution, analogue has low-resolution options, whereas IP has very high-resolution options. We, at Prama India, have a wide range of systems that work for your needs and budget. We can also upgrade your DVR system, allowing you to synchronize your video surveillance footage with POS data, so you can track unusual transactions, keypad entries, or late-night door access. Our security experts can help you choose the best security system for your exact business needs. From a simple camera and intrusion security system to a more advanced multi-camera, access control, and intrusion security system synced into your fire protection system, we can outfit your business with the best security products available in the market.
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