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Video coding code rate adjustment method

A technology of video coding and adjustment method, applied in the field of video coding, can solve the problems of no rate control, fixed quantization parameters, low video compression efficiency, etc.

Inactive Publication Date: 2019-04-12
建湖云飞数据科技有限公司
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Problems solved by technology

[0002] In the traditional video coding technology, only the code rate allocation is performed on the inter-frame prediction frame against the graphics frame. The bi-directional inter-frame prediction frame does not perform code rate control, and the nearest inter-frame prediction frame is used to compare the quantization parameters of the graphics frame for code rate allocation. Due to its relatively fixed quantization parameters, it has obvious shortcomings, and the video compression efficiency is low.

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Embodiment Construction

[0010] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0011] For a video encoding rate adjustment method provided by an embodiment of the present invention, refer to figure 1 As shown, it mainly includes the following steps:

[0012] Step 1, obtaining the current graphics frame and the level of the current graphics frame;

[0013] Step 2. Obtain the actual encoding quantization parameter correction value corresponding to the current graphics frame according to the level and the preset quantization parameter correction value database, wherein the quantization parameter correction value database maintains the The corresponding relationship between eac...

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Abstract

The invention relates to a video coding code rate adjustment method. The method is based on the principle that video compression efficiency can be improved by using different code rate ratios among different layers in a Hierarchical structure, a to-be-coded current graphic frame and a level are obtained, and an actual coding quantization parameter correction value corresponding to the current graphic frame is obtained according to the level, reference quantization parameters corresponding to a contrast graphic frame of the current graphic frame are obtained, and actual coding quantization parameters corresponding to the current graphics frame are obtained according to the reference quantization parameters and the actual coding quantization parameter correction value, and code rate allocation is carried out on the current graphic frame according to the actual coding quantization parameters, and thus coding efficiency can be improved by employing the method.

Description

technical field [0001] The present invention relates to the field of video coding, in particular to a method for adjusting the code rate of video coding. Background technique [0002] In the traditional video coding technology, only the code rate allocation is performed on the inter-frame prediction frame against the graphics frame. The bi-directional inter-frame prediction frame does not perform code rate control, and the nearest inter-frame prediction frame is used to compare the quantization parameters of the graphics frame for code rate allocation. Due to its relatively fixed quantization parameters, it has obvious disadvantages, such as low video compression efficiency. Contents of the invention [0003] Based on this, the present invention provides a video coding rate adjustment method, [0004] A method for adjusting a video coding rate provided by the present invention includes: [0005] Obtain the current graphic frame and the level of the current graphic frame;...

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Application Information

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IPC IPC(8): H04N19/124H04N19/146H04N19/159H04N19/172
CPCH04N19/124H04N19/146H04N19/159H04N19/172
Inventor 林路路
Owner 建湖云飞数据科技有限公司
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