At the core, both NVR and DVRs are responsible for video recording. DVR stands for Digital Video Recorder, whereas NVR stands for Network Video Recorder. The difference between NVR and DVR is how they process video data. DVR systems process the video data at the recorder. In contrast, NVR systems encode and process the video data at the camera, then stream it to the NVR recorder, which is used for storage and remote viewing. As DVRs and NVRs handle the video data differently, they require different types of cameras. Most NVRs are used with I.P. cameras, whereas DVRs are used with analog cameras. It’s important to note that a DVR-based system is a wired security system. In contrast, NVR systems can be wired or wireless systems.
DVRs with coaxial cables generally have image quality that deteriorates after around 300 feet. With an NVR system, you can get around this by using a POE extender, POE injector, or POE switch to extend cables over long distances while maintaining high image quality. NVRs offer high flexibility — connected to the same I.P. network, can install NVRs virtually anywhere in your building.
Since NVRs use a software program to record video in a digital format automatically. They can easily transmit data over computer networks and even remotely stream security footage on a mobile device in real-time. NVRs are also typically newer and more advanced systems that offer higher video quality, compatibility with more cameras, and more flexible features.
Installing a DVR is the best bet for business security systems with existing coaxial wiring and analog cameras. For commercial security camera systems starting from scratch, NVRs are a great choice, which offers higher-resolution IP cameras and remote video feed access.