Comparison and Analysis of Video Conferencing System and Network Video Surveillance

When many security engineers are doing network video surveillance solutions, users often ask users whether video surveillance systems can be used as video conferencing systems. Although after adding voice intercom, video surveillance can realize the functions of a simple videoconferencing system. Both systems belong to the same field of audio and video applications and there are many similarities, but the two are still very different.

Let's start with a few concepts:

What is a video conferencing system? This kind of two-way, multi-point, real-time video and audio interaction system that is not limited by geographical area and built on a broadband network is called a remote video conference system.

What is video surveillance? The video surveillance system is mainly composed of four parts: front-end camera part, transmission part, control part, display and recording. The system enables managers to observe and record all personnel activities in the front-end defense area in the control room, providing dynamic image information for the security system.

What is an online video surveillance system? Networked Video Surveillance System (IPVS-IP Video Surveillance): Video is output from an image capture device as a digital signal, a standard Internet network is used as the transmission medium, and an international standard TCP/IP protocol is adopted. Streaming media technology is used to implement video on the Internet. Multiplex transmission, and through the video streaming server installed on the Internet to complete the video stream forwarding, alarm and other operations to achieve the entire monitoring system command, scheduling, storage, authorization control and other functions.

There are similarities between the video conference system and the network video surveillance system, and it is also the basic reason why people often connect the two.

The same point 1, the system architecture is similar to the structure of the two systems are basically composed of audio and video capture devices and server devices. For videoconferencing, it is composed of conference terminals and MCUs (multipoint control units); for video surveillance, it is composed of cameras and hard disk recorders (or PC servers), which are basically star-like structures centered on server-like devices. .

2. Some of the standards are the same Because both systems contain audio and video and network transmission factors, the system uses the same standard parts. For example, for video, both are gradually adopting H. 264 standards to accommodate different bandwidth transmission needs.

3, the same two transmission systems are based on network transmission.

Although there are many similarities, there are some devices on the market that can be used both as videoconferencing and as video surveillance. However, the two are still two different systems, based on the difference between the two, large and complete devices. It is impossible to fully integrate the two to fully realize their respective functions.

Different points 1. The system's starting point is different. The two systems are created to meet different needs. This determines that there is a difference between the two. Video conferences are created to meet the needs of companies or companies to conduct conferences in different places; video surveillance is produced for the purpose of monitoring real-time conditions and protecting property security.

2. Equipment Different videoconferencing endpoints must have video and voice collection systems, and integrate network components that can directly transmit audio and video over the network without storing them; video surveillance includes more devices and audio acquisition is not required. The storage part is a very important part of the video surveillance system.

3, the function of different video conferences in addition to video real-time display audio synchronization transmission, there are voting statistics and display functions, data transmission functions, such as the ability to transmit a meeting PPT speech for display and other functions; video surveillance In real-time video transmission, video storage, alarm processing, motion detection, video playback, and other functions are also required.

4. Set up venues Different video conference equipments are deployed in conference rooms with better conditions; the equipment of the surveillance system, especially the cameras, must be set in a wide range, and the outdoor bad environment can still work normally.

5, the cost of different video conference rental price is generally around 80 yuan per point per month, and a good point of video conferencing terminals are generally in the several million, MCU is in more than 100,000. Video conferencing equipment prices are much higher than the video surveillance system equipment. Therefore, the rental of video conferences will become the first choice for small and medium-sized enterprises