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Code rate self-adaption method and device of live video, electronic equipment and readable medium

A live video and bit rate technology, applied in the video field, can solve problems such as insufficient utilization, inability to optimize live video performance, and lack of end users, and achieve optimal global performance, good QoE performance, and good video quality

Active Publication Date: 2021-09-17
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current end users lack network assistance, cannot make full use of the information in the network, and cannot optimize the performance of live video broadcasting from a global perspective

Method used

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  • Code rate self-adaption method and device of live video, electronic equipment and readable medium
  • Code rate self-adaption method and device of live video, electronic equipment and readable medium
  • Code rate self-adaption method and device of live video, electronic equipment and readable medium

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Embodiment Construction

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0033] The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate that the technical solutions of the present invention can be practiced without one or more of the specific deta...

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Abstract

The embodiment of the invention provides a code rate self-adaption method and device for a live video, electronic equipment and a readable medium. The method comprises the following steps: acquiring an end-to-end transmission rate, a current buffer area capacity and a current playing speed of a target user through a mobile edge computing node; determining W picture groups from the current picture group GOPn to the picture group GOPn+W-1 as a current time window sequence; determining MW types of alternative code rate sequences of the current time window sequence according to the M preset code rate levels; calculating the QoE of each alternative code rate sequence according to the end-to-end transmission rate, the current buffer capacity and the current playing speed of the target user, so as to determine the alternative code rate sequence corresponding to the maximum QoE as a target code rate sequence; and determining a target code rate of the current picture group GOPn in the target code rate sequence so as to download the current picture group GOPn according to the target code rate. According to the technical scheme provided by the embodiment of the invention, the code rate selection and the frame skipping strategy can be optimized for a long time, so that the video live broadcast service performance is improved.

Description

technical field [0001] The present disclosure relates to the field of video technology, and in particular to a code rate adaptive method, device, electronic equipment, and computer-readable medium for live video. Background technique [0002] With the explosion of mobile Internet applications, the wireless video live broadcast business has developed rapidly. The time-varying characteristics of traditional 4G network wireless channels and limited spectrum resources lead to unstable live video service experience in wireless scenarios. [0003] In recent years, in order to solve the live broadcast user experience, the industry is trying various solutions, among which two technologies are widely used. One is content delivery network (Content Delivery Network, CDN) acceleration technology, and the other is adaptive streaming media technology. CDN acceleration technology refers to the commonly used content distribution network technology to accelerate video transmission in live ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2187H04N21/442H04N21/6373H04N21/647H04L29/06H04N19/177
CPCH04N21/2187H04N21/44227H04N21/64769H04N21/64723H04N21/6373H04N19/177H04L65/80H04L65/70
Inventor 王文博曾敏寅张志龙刘丹谱
Owner CHINA TELECOM CORP LTD
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