1、 Picture quality of video security monitoring server

This is the basic premise of remote monitoring and the basic element to ensure whether remote monitoring and unattended can be realized. The video display monitoring picture is fuzzy, which has no application significance. At present, there are generally two image quality CIF and D1 options on the market, with 352 * 288 and 704 * 576 resolutions respectively. Without considering other factors, of course, the DVD image quality of D1 is the best, but if bandwidth is considered, CIF can also meet the needs of some ordinary occasions.

2、 Network bandwidth requirements

This is one of the indicators of the video surveillance server. Under the same picture quality, the lower the occupied bandwidth, the higher the compression rate of the video surveillance server. In large-scale applications, high compression rate can greatly reduce your network use cost. Therefore, when selecting such products, the equipment cost will be relatively high, but the subsequent overall cost will be greatly reduced.

3、 Delay of video transmission

This is also an important indicator of network products. In order to ensure the timeliness of on-site signals, the product is required to be kept at the microsecond level when the bandwidth is not limited. That is, in the absence of bandwidth, the delay of the video monitoring server itself should be ignored. Therefore, it is best to give sufficient bandwidth in the LAN to test its performance. At the same time, you should also consider how much bandwidth your device requires under actual circumstances. Otherwise, it is difficult to play its role with high-end products.

4、 Front end capture function of client

This function is to ensure that high-definition pictures can be transmitted back under the condition of low bandwidth. In some monitoring fields, it is a good choice to retain evidence after an accident in case of insufficient bandwidth.

5、 Voice intercom function of client

This is the best application for remote control of security monitoring when no one is on duty. Of course, it is necessary to select a product with a certain level of bandwidth control and audio and video synchronization processing ability. Generally, it has voice monitoring or two-way voice requirements.

6、 Video storage server local storage function
This function is generally critical, but when the bandwidth is insufficient and obvious monitoring evidence is required, the local storage of video data is generally selected, because if the registration server stores a large number of video image data, the server will be overwhelmed, so the general video data are stored in the local SD card, and the image data is fully stored with automatic coverage function, Generally, it can be stored for 24 hours for about a week.