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| Network video, often also called IP-based video surveillance or IP-Surveillance as it is applied in the security industry, uses a wired or wireless IP network as the backbone for transporting digital video, audio and other data. When Power over Ethernet (PoE) technology is applied, the network can also be used to carry power to network video products. |
| A network video system allows video to be monitored and recorded from anywhere on the network, whether it is, for instance, on a local area network (LAN) or a wide area network (WAN) such as the Internet. |
| IP video is used in many cases; however, applications are mainly used in two categories. |
| Security surveillance |
| Network video offers more ways to secure access to video than can be provided by an analog CCTV system. Passwords can be used to limit access, and video can be encrypted before being sent over the network to make sure it cannot be viewed or tampered with. The system can also be set up to authenticate the connection using encrypted certificates that only accept a specific network video device, thus eliminating the possibility of anyone hacking into the system. |
| Remote monitoring |
| Network cameras and video encoders can be configured and accessed remotely, enabling multiple, authorized users to view live and recorded video at any time and from virtually any networked location in the world. This is advantageous if users would like a third-party company, such as a security firm, to also gain access to the video. In a traditional analog CCTV system, users would need to be at a specific, on-site monitoring location to view and manage video, and off-site video access would not be possible without such equipment as a video encoder or a network digital video recorder (DVR). A DVR is the digital replacement for the video cassette recorder. |
| Protecting existing CCTV investments |
| Significant investments in analog CCTV systems may have already been made. The technology shift to network video does not, however, mean that existing analog CCTV investments have to be discarded. With an Axis network video solution, you can integrate your existing analog system into an IP-based solution. The solution enables you to take advantage of numerous functionalities such as remote pan/tilt/zoom, Power over Ethernet, audio, video motion detection, while meeting user requirements for image quality, recording capabilities, reliability, and cost-effectiveness. |
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| Cheaper installation |
| An Axis network video system is able to send video without the need for a dedicated physical infrastructure. It uses standard IP networks, such as Local Area Networks (LANs) and the Internet, for transporting information, rather than dedicated point-to-point cabling, such as that used in analog video systems. |
| Easy and cost-effective expansion |
| A network video system is extremely flexible. Cameras can be moved freely around the network, and the system can be expanded by adding more network cameras. This is easily done regardless of whether the new cameras are to be placed at the same site, or at a new location communicating over the Internet. |