The acronym ‘NVR’ will crop up when you research your home CCTV surveillance system, It stands for ‘network video recorder’.
Wherever you decide to place surveillance cameras around your home, whether its indoors or outdoors, the video streams need a destination.
Monitoring can be either active (someone sits and watches the video stream) or passive (you record and review footage as needed). Software can assist with active monitoring, sending you an alert to your phone when motion is detected by a camera. And passive monitoring is useful after a crime, for collecting evidence.
Either way, your security cameras need a destination for their footage. Since modern cameras are recording digital image data, this destination for your video will be a hard drive. The hard drive will often be housed in a dedicated device called a recorder.
And one type of recorder for CCTV video works as part of a network of IP cameras operating across a system of routers, switches, ethernet cables and Wifi signals.
These recorders are NVRs or ‘network video recorders’.
Old-style CCTV systems would stream video from cameras to a DVR or ‘digital video recorder’.
An unassuming black box or PC built for video recording purposes, DVRs consisted of software, a storage target and a video capture card.
Camera streams from analog or digital cameras passed through cables directly wired to the DVR. It could be a hassle running new cables from each camera back to your DVR. The DVR would run this video data through the capture care, and record the footage to a hard-drive.
DVRs did offer smart security monitoring systems with like motion detection and user alerts. DVRs were a significant upgrade over geriatric VCR systems. They are still commonly used in video surveillance systems today.