Differences Between DVR and NVR

Differences between DVR and NVR

There are so many differences between DVR and NVR. DVR means Digital video recorder and NVR means Network Video recorder. Both of them have some variations among them. One is an analogue camera and another is IP Camera. They have different forms of transmission.

What are the dissimilarities between DVR and NVR?


Firstly, realize that DVRs have been around longer than NVRs, and have been consistently available for business and home usage since approximately 1999. DVR stands for Digital Video Recorder. A DVR is a device that can digitally record, encode, and store video data from a source other than itself termed an ‘external source’. DVRs are used for numerous applications, as you know they are utilized in CCTV for security cameras pretty about everywhere. They have also been used widely for in-home Television applications. You may even have a DVR at home from your cable company that’s used for recording live TV shows that you may otherwise have missed.

In the CCTV business, however, DVRs are utilized to capture the incoming video signal from security cameras. This data is transferred using a Coaxial -or COAX-cable that is linked to the ports on the rear of the DVR. The signal broadcast might be analogue, but more typically in current times is a digital signal. The DVR features a computer processor capable of collecting, encoding, compressing, and storing the incoming video signal to make better use of space. The user may then poll this video data later to be seen, or exported.

DVR advantages

Most Modern DVRs are hybrid systems capable of utilising more than one digital or analogue video feed type. Additionally, DVRs may normally install a specific number of IP cameras across the network.  But how many cameras and which channels depend on the brand of DVR. Many CCTV setups that are now existing, are older and consequently already COAX based. This implies installing a modern DVR at these places can be more cost-effective than establishing an IP camera system, which takes us directly into our next point.


So doesn’t an NVR accomplish all those same things as a DVR? Not fully, there are several crucial fundamental distinctions between the two technologies. NVR stands for Network Video Recorder, which goes directly into one of the primary and more evident distinctions between DVRs and NVRs. NVRs only function with IP, or network cameras.

NVR advantages

Some NVRs offer power over ethernet, or POE, directly to IP cameras via an onboard POE port cluster. Other NVRs primarily link to cameras on an outbound POE switch just on the local area network. The POE NVRs can generally accomplish both. Additionally unlike DVRs, the great majority if not all of the work done to encode the video data and compress it does not take place on the NVR. IP cameras normally execute their own data compression and encoding, then transfer this data to the NVR to be recorded to its hard drives(S).

This is a positive since this frees the NVRs processing power up for other operations with less bogging down, including:

  • Remote watching
  • Playback and exporting
  • And sophisticated features include Artificial intelligence

In other words, Because the NVR as a central station doesn’t have to perform quite a lot of the encoding work, NVRs tend to be a bit better at those aspects described above, and frequently deal with cameras that achieve higher resolutions such as 4k or more.

The  Lowdown

This one is final among the differences between DVR and NVR. So to sum it up DVRs and coax cameras are preferable for simpler more cost-effective solutions- Particularly sites that may already have past installations. NVRs and IP cameras are perfect for spanking new installations, or for higher-end applications. Both have their place and function in the CCTV world. We have two wonderful movies on IP cameras and Coax cameras and the benefits of each.