Cross-domain multicast method and device in a video surveillance system

Abstract

The invention discloses a cross-domain multicast method and device in a video monitoring system. The method and the device are applied to video management servers in the video monitoring system. The method comprises the steps of receiving a query message of a client in a local monitoring area for checking front end devices in other monitoring area; querying the video management server of the other monitoring area; informing a streaming media server in the local monitoring area of sending a video stream in a multicast mode according to a feedback notice message after the unicast video stream of the streaming media server in the other monitoring area is received; and informing the client in the local monitoring area of receiving the multicast stream, wherein the client is the client which checks the front end devices of the other monitoring area. The device provided by the invention comprises a query module, a control module and a feedback module. According to the method and the device, cross-domain multicast can be realized under the condition that a terminal device supports multicast.

Description

technical field [0001] The invention belongs to the technical field of video monitoring, and in particular relates to a cross-domain multicast method and device in a video monitoring system. Background technique [0002] With the development of IP video surveillance technology, the deployment of IP video surveillance is becoming more and more extensive, and the scale of the monitoring network is becoming larger and more complex. In the video surveillance system, multicast technology has its incomparable advantages, but at the same time, it has certain requirements for networking and equipment. However, in the video surveillance system, the networks of the upper and lower domains are planned independently, and multicast is supported within each domain, but the network devices connecting between domains may not support multicast. In addition, the independently planned multicast addresses of the upper and lower domains may overlap. [0003] In the prior art, although the multi...

AI Technical Summary

Problems solved by technology

[0005] It is easy to understand that the video traffic can achieve the basic functions of viewing on the decoding client A, but it is obviously not the optimal solution.

For IPCB, it is necessary to maintain both unicast and multicast functions. For a large number of terminal devices, the more functions are added, the higher the cost and the higher the failure rate.

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