Network video recorder

This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.

A network video recorder ( NVR ) is a system for recording video streams that are digitally provided by network cameras and transmitted to the NVR via a network .

NVR with network cameras

Areas of application

Network video recorders are mainly used in video surveillance systems to monitor public or private rooms, traffic and all kinds of technical systems. Depending on the software used on the NVR, functions such as motion detection, time-controlled recording, FTP upload, email notification, etc. can be used. With the option of NAS devicesVideo surveillance systems based on a network video recorder are now also affordable for private users to turn into an NVR using the appropriate software. In addition to stationary use, network video recorders can also be used in combination with a camera in the mobile sector. NVRs are installed in public transport in buses, trains and taxis to increase personal safety and protect against vandalism. In addition, network video recorders are set up in police and fire services vehicles for documenting emergency drives and monitoring emergency locations.

function

An NVR stores the received digital data on an integrated hard drive. As a rule, the devices are equipped with one or more hard disks with a capacity of several terabytes (TB) in order to provide sufficient storage space. Many devices also offer additional connection options for USB devices, memory cards or other storage media. The required hard drive size and bandwidth are particularly dependent on the number of network cameras to be integrated, the video recording format, the resolution, the frame rate (FPS) and the archiving time of the video recording.

Strictly speaking, a network video recorder is a computer that is equipped with the appropriate software for video recording and is designed for continuous operation. The transition from and to Network Attached Storage (NAS) is therefore fluid and cannot be clearly delimited. As with a NAS, the connection to a network video recorder is usually established via Ethernet and TCP / IP . Access to the stored data and the configuration interface is possible both locally via LAN and worldwide via the Internet.