DVR vs. NVR: What’s the Difference?

Compared to DVRs, NVRs are used more frequently in surveillance cameras. So, what’s the difference between NVR and DVR? The main difference between DVR and NVR is in their methods of processing and managing video data. DVRs typically work with analog cameras, where the analog video signals are processed and stored in digital format within the DVR itself. However, NVRs are used with IP cameras that encode and process video data before sending it to the NVR through a network and within the camera.

Furthermore, they also differ from each other in these aspects:

Data Transmission:

DVRs receive video signals directly from analog cameras using coaxial cables, whereas NVRs receive digital video streams from IP cameras through a network, often using Ethernet cables or Wi-Fi.

Video Quality:

NVRs offer higher video quality and resolution because IP cameras often have better image sensors and support higher resolutions compared to analog cameras commonly used with DVRs.


NVRs seamlessly record audio with IP camera footage. Some IP cameras even offer a two-way intercom, which enables real-time sound capture and speaker functionality. On the other hand, DVRs face challenges in recording audio due to analog video limitations. Adding an audio RCA connector to the DVR for sound may require extra installation effort.

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