Link backup system and method for multicast video stream

Abstract

The invention belongs to the technical field of link backup, and in particular relates to a link backup system and control method and system of a multicast video code stream, aiming to solve the problem that the existing backup technology will increase the number of multicast video codes under the premise of real-time backup switching. streaming or video multicast streaming bandwidth, which leads to the problem of rising costs. The invention includes: the encoding module and the decoding module respectively configure the same multicast address for the network ports of the active and standby links; only send the group adding message and the multicast video heartbeat message, and establish an information forwarding channel; the decoding module according to the code stream The serial number is used to check and discard the code stream message; detect the status of the main and standby links, and determine the switching conditions. If the encoding process meets the conditions, the code stream sending link will be switched; Frames are switched for boundaries. The invention does not increase the cost of the core switch, realizes the link backup of the multicast code stream, and achieves automatic, real-time and seamless video switching effects.

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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