Video monitoring system, and method for monitoring video data through traversing NAT (Network Address Translation)

Abstract

The invention discloses a video monitoring system, and a method for monitoring video data through traversing NAT (Network Address Translation). A monitoring server redirects an equipment connecting request of a client end, wherein the redirected equipment connecting request comprises an IP (Internet Protocol) address of a client end agent module, a preset port and identification information of video equipment; the client end agent module monitors the redirected equipment connecting request of the client end through the preset port, a UDP (User Datagram Protocol) channel is built according to the identification information of the video equipment and a video equipment agent module, and business control information or video data related information is forwarded through the UDP channel; a first port and a second port are opened, the business control information is interacted with the client end through the first port, and the video data related information is interacted with the client end through the second port; the UDP channel is built by the video equipment agent module and the client end agent module, and the business control information or the video data related information is forwarded through the UDP channel. Through the system and the method provided by the invention, the bandwidth consumption of the monitoring server can be reduced.

Description

Technical field [0001] This application relates to NAT traversal technology, and in particular to a video surveillance system and a method for a client to access video data through NAT. Background technique [0002] Most of the video equipment in the prior art (NVR (Network Video Recorder), IPC (IP camera, network camera), DVR (Digital Video Recorder, digital video recorder), etc.) are located in the private network and need to obtain video The client that monitors the video of the device is often not in the same private network as the video device. Generally, the device in the private network cannot directly access the Internet, but access the public network through the router NAT, so the video data cannot be directly connected. Accessed by external clients. In order to enable the internal video equipment to be accessed by other clients on the external network, the service provider needs to set up a monitoring server on the public network. When a user needs to access a video d...

AI Technical Summary

Problems solved by technology

[0003] However, due to the large amount of video data, the monitoring server on the public network needs to consume a large amount of bandwidth, and it is easy to become a performance bottleneck

The path is not optimal, and video transmission is prone to large network damage: packet loss, delay, jitter, etc.

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