Network Video Recorder (NVR) is a specialized computer that records security video surveillance footage in digital format to a hard drive. Because the NVR does not have video capture capability, video is typically processed and encoded from the surveillance IP or CCTV camera and transferred to the NVR for storage via ethernet or WiFi network. NVRs are typically employed within IP video surveillance systems.
Network Video Recorders have replaced legacy Digital Video Recorders (DVR). Advantages include:
- Record video and audio
- Better image quality
- System flexibility
- Better viewing coverage
- Wired or wireless
- Required 1 cable for video, audio, and power
- Recognition of faces, license plate, etc. due to better image quality
Network Video Recorder (NVR) Features
NVR features can include:
- Video analytics
- Recording mode options
- Power-over-ethernet (PoE) network switches
- PTZ camera controls
- Remote configuration
- Recording triggers
- Video compression schemas
Network Video Recorders vs. Digital Video Recorders
Here is a comparison between DVRs and NVRs:
Resolution of Recordings
- DVRs can only record in 720p resolution. NVRs, on the other hand, offer 1080P high-definition recording capabilities and incredible picture clarity.
Camera Connections
- NVRs are readily more scalable than DVRs
- NVRs are the most common way to store and access footage from IP cameras
Hybrid Video Recorders
- Can function with both analog cameras and IP cameras