Cp Plus Cctv Camera DVR And NVR 

DVR is a Digital Video Recorder, and NVR is a Network Video Recorder. Both NVRs and DVRs record video data transmitted from security cameras, storing it in a format that you can access later. They differ in how they handle that data. 

In a DVR system, video is recorded from analog cameras. As the name suggests, analog cameras cannot process raw video data at the source (i.e. within the camera itself). Instead, analog cameras transmit a raw video signal to the DVR along coaxial cables. The DVR processes this signal into a digital format that can then be stored and viewed remotely.

In an NVR system, we capture video from IP (internet protocol) cameras. Unlike analog cameras, IP cameras can process video data at the source. The processed video data is then sent to the NVR over an ethernet cable, or by wifi. IP cameras usually offer much higher resolution than analog cameras. The NVR still records data in a digital format, but it does not process the data as this has already taken place within the IP camera.