Multipath video adapting coding transmission method under limited bandwidth and transmission system thereof

Abstract

The invention provides a multipath video adapting coding transmission method under limited bandwidth. The method comprises the following steps that: (1) a control module of a server terminal adjusts an average code rate of each path video code stream according to an adjusting strategy; (2) a coding module of a server terminal codes an original video signal and outputs the coding bit flow with different qualities according to an average code rate requirement; (3) a sending module of the server terminal sends the code stream output from the coding module; (4) a reception module of a client pre-buffers and receives the video code stream; (5) a decoding display unit of the client reorders the disordered video code stream in received video code stream decoding and sends code stream time delay or deletion to the server terminal; (6) a process returns to a step (1) and a cyclic operation is performed. By using the method and the system of the invention, video transmission with a high qualityand a large user number can be completed under a stable and limited bandwidth network state. An ideal user usage experience can be provided under a condition of the crowd users and video transmissionquality can be guaranteed.

Description

technical field [0001] The invention belongs to the field of multimedia technology, and in particular relates to a multi-channel video self-adaptive coding transmission method and a transmission system applied to a limited bandwidth in the electric power industry. Background technique [0002] With the rapid development of information technology, the rapid development of computer network technology, image processing technology and communication technology has greatly promoted the continuous development and update of video technology. The video transmission system is a system based on digital compression coding technology to realize real-time transmission. It takes the computer as the core, adopts high technology, combines the actual requirements of the video transmission system and the security theory and experience that has been continuously improved over the years to establish a set of software and hardware. Combined, brand-new and complete video transmission system optimi...

AI Technical Summary

Problems solved by technology

However, the existing video transmission system has the following problems: 1. The problem of bandwidth occupation, the large amount of video data and the limited network bandwidth have always been the bottlenecks that limit the development of video transmission systems

2. When video data is compressed, the redundant information in it makes the amount of data transmitted in the network large, thus increasing the requirements for network bandwidth

3. The network protocol and transmission algorithm during video transmission are not optimal, so the transmission effect is not satisfactory

4. Due to changes in network status parameters, changes in the number of system users, etc., which seriously affect the video transmission effect

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