Link backup system and method for multicast video code streams

Abstract

The invention belongs to the technical field of link backup, particularly relates to a link backup system of a multicast video code stream and a control method and system, and aims to solve the problem that the cost is increased due to the fact that the bandwidth of the multicast video code stream or a video multicast stream is increased on the premise of real-time backup switching in the existingbackup technology. The system comprises an encoding module and a decoding module, wherein the encoding module and the decoding module configure the same multicast address for network ports of main and standby links respectively; only sending the group adding message and the multicast video heartbeat message, and establishing an information forwarding channel; the decoding module performs duplicate checking and discarding processing on the code stream message according to the code stream serial number; detecting the states of the main link and the standby link, judging a switching condition, and switching the code stream sending link if the coding process meets the condition; and if the decoding process meets the condition, switching the code stream receiving cache by taking the video frame as the boundary. According to the invention, the cost of the core switch is not increased, the link backup of the multicast code stream is realized, and an automatic, real-time and video seamless switching effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of link backup, and in particular relates to a link backup system and method for multicast video streams. Background technique [0002] In a video fusion processing system that supports multiple compression formats, each encoding node simultaneously encodes multiple multicast video streams, including lightly compressed high-bandwidth video streams and deep compressed streams. This system is characterized by a large number of multicast code stream forwarding and high code stream bandwidth. For example, if there are 1000 coding nodes, and each node encodes 3 multicast code streams, 3000 code streams need to be forwarded concurrently in the switching network. Backup is an important means to ensure the safe, stable and uninterrupted operation of the system. In order to increase the safety and reliability of the system, it is more and more important to adopt high-efficiency and low-cost backup technology. [00...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, under the premise of real-time backup switching, the existing backup technology will increase the bandwidth of the multicast video stream or video multicast stream, which will lead to an increase in cost. A link backup system for broadcasting video streams, the backup system includes an encoding module and a decoding module;

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