What is a Network Video Recorder (NVR)?
A Network Video Recorder (NVR) is a specialized computer that records security 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.
What is a Digital Video Recorder (DVR)?
A Digital Video Recorder (DVR) records video surveillance footage to local storage devices, most commonly a hard drive. DVR can record analog video sources on-site or capture video from a digital source. DVRs can be connected to analog cameras via coaxial cables, enabling them to be accessed remotely. DVRs offer enhanced functionality like the ability to search recordings for events or sort by time and date. DVRs can be configured to replace older footage once storage becomes full automatically.
Each security camera needs a central video recorder to transmit and archive the footage they are capturing. VCRs evolved into DVR models, which were then superseded by NVR technology that can monitor an unlimited number of cameras, whether in one location or around the world.
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This video is part of Senstarpedia - articles and videos that enrich and expand on physical security technologies. It contains generic security content for information purposes only.
26 янв 2023
