A Network Video Recorder (NVR) is a software program that allows recording surveillance video in a digital format to a disk drive, memory card, or USB flash drive. Although an NVR does not have a dedicated video capturing hardware, it uses a dedicated device with an embedded operating system. It is often deployed in an IP video surveillance system. In general, an NVR security system for homes is wireless, easy to set up, and accessible through a web browser. It lets users be notified by email when an alarm is triggered.
Kinds of NVR Security System
- 4-channel NVR security system. This type of NVR system is ideal for home, retailer store, or small office applications. It is compatible with a lot of IP cameras, without specific hardware or software required. You just have to plug NVR into your LAN-connected device and with just a few clicks, it will search and configure every connected IP camera. Through the local area network or over the internet, you can connect up to four IP cameras.
- 8-channel NVR. The 8-channel NRV is compatible with 8 IP cameras. Just like the 4-channel NVR, you only need to plug the NVR into your LAN-connected device and it will configure every connected IP camera.
- 16-channel NRV. Big homes and offices will require more cameras and a bigger NVR. Although this NVR works similarly as 4-channel and 8-channel NVR, they might require a bigger storage device for keeping recordings of 16 cameras intact.
Differences Between DVR and NVR
When you shop for security systems, you must pick between a digital video recorder (DVR) and an NVR. Both perform the same function but differ in how and the kind of cameras used. It is important to understand the difference between the two when assessing security systems. DVR systems process the video data at the recorder while NVR software encodes and processes the video data at the camera and stream it to the NVR recorder used for storage and remote viewing. Because they handle the video data differently, they require different kinds of cameras. Also, a DVR-based system is a wired security system while an NVR system can be wired or wireless. With NVR systems, the inputs are obtained from a network instead of from individual feeds. Thus, every camera in the network is assigned with a specific IP address that the NVP recognizes and accepts.
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