What is a primary function of a network video recorder (NVR)?

The primary function of a network video recorder (NVR) is to record and save video footage. NVRs are specifically designed to capture video streams from IP cameras and store them for future retrieval and viewing. This storage capability is crucial for security and surveillance purposes, as it allows users to maintain a record of events that can be reviewed at a later time.

While playback of recorded video content, providing alerts, and managing video analysis services are important features associated with video surveillance systems, they are secondary to the fundamental purpose of an NVR, which is focused on the recording and archiving of video data. An effective NVR will ensure that footage is captured reliably, stored securely, and remains accessible for review, making it an essential component in modern surveillance systems.