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A kind of screen content video coding rate control method, terminal and storage medium

A screen content and video coding technology, applied in the field of video coding, can solve the problems of high bit rate control error rate and high coding performance, achieve the effect of reducing bit rate control error and improving coding performance

Active Publication Date: 2022-07-05
PENG CHENG LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, a screen content video coding rate control method, terminal and storage medium are provided, aiming to solve the problem of high rate control error rate in the prior art when the coding performance of the SCC coding technology is high

Method used

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  • A kind of screen content video coding rate control method, terminal and storage medium
  • A kind of screen content video coding rate control method, terminal and storage medium
  • A kind of screen content video coding rate control method, terminal and storage medium

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Experimental program
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Embodiment 1

[0042] like figure 1 As shown, the method for controlling the coding rate of screen content video provided by the present invention includes the steps:

[0043] S100. Acquire a target bit rate of the screen content video, and determine a target bit rate of a target frame to be encoded in the screen content video according to the target bit rate of the screen content video.

[0044] When the screen content video is encoded, a target bit rate is set. After the screen content video is encoded, the error between the actual bit rate and the target bit rate needs to be controlled within a certain range. When encoding the screen content video, each frame in the video is sequentially encoded, and the target bit rate of the target frame to be encoded in the screen content video is determined according to the target bit rate of the screen content video, including:

[0045] S110. Divide the screen content video into multiple image groups, each image group includes multiple frames, and d...

Embodiment 2

[0106] Based on the above embodiments, the present invention also provides a terminal, the principle block diagram of which can be as follows image 3 shown. The terminal includes a memory 10 and a processor 20, and a computer program is stored in the memory 10. When the processor 10 executes the computer program, the processor 10 can implement the steps of a rate control method for video encoding of screen content, as described in the first embodiment.

Embodiment 3

[0108] The present invention also provides a storage medium, where one or more programs are stored in the storage medium, and the one or more programs can be executed by one or more processors, so as to realize the video coding rate of the screen content described in the above embodiments The steps of the control method.

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Abstract

The invention discloses a screen video content coding rate control method, a terminal and a storage medium. The screen content video coding rate control method provided by the present invention divides the coding units into two types according to the content characteristics of the coding units, according to the number of the two types of coding units in the target frame and the number of the two types of coding units in the target unit group. number and the target code rate of the target frame to determine the first coding parameter of the target coding unit group, and then determine the final target for coding the target coding unit group according to the first coding parameter and the actual coding rate of the previous coding unit group Coding parameters, realize the determination of different coding parameters according to the content characteristics of the coding unit, improve the coding performance, and modify the coding parameters used for coding the next coding unit in real time according to the actual coding rate of the previous coding unit, reducing the code rate control error.

Description

technical field [0001] The present invention relates to the technical field of video coding, and in particular, to a code rate control method, terminal and storage medium for video coding of screen content. Background technique [0002] Compared with the natural content video obtained by the camera, the screen content video (SCV) has the characteristics of including a text area and a limited number of colors of the video content, and has more information redundancy. In order to encode the screen content sequence more effectively , based on the existing Screen Content Coding (SCC) technology on the basis of High Efficiency Video Coding (HEVC), the features of SCV have been extended, and a new coding tool has been adopted. However, in practical applications, the content characteristics of the screen content video are not considered in the SCC, and there is a problem that the rate control error rate is relatively large when the coding performance is high. [0003] Therefore, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2662H04N21/6379H04N19/149
CPCH04N21/2662H04N21/6379H04N19/149
Inventor 薛雅利邹龙昊王旭汪漪李伟超李清
Owner PENG CHENG LAB