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Encoding method and device

An encoding method and encoding technology, applied in the multimedia field, can solve the problems of high lossless encoding bit rate and low compression efficiency, and achieve the effect of improving encoding speed, improving compression efficiency and small bit rate

Active Publication Date: 2019-04-19
上海众源网络有限公司
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  • Description
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Problems solved by technology

[0004] However, the inventor found in the process of implementing the present invention that at least the following problems exist in the prior art: in the current encoding method, the code rate of lossless encoding is relatively high, which reduces the compression efficiency

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0052]In order to improve the encoding speed on the basis of higher compression efficiency when performing multi-channel encoding on the same video, an embodiment of the present invention provides an encoding method and device, wherein the compression efficiency refers to the condition that the same video is compressed and distorted Below, the smaller the code rate, the higher the compression efficiency. The encoding method provided by the embodiment of the present invention includes:

[0053] Obtain the first rate-distortion cost and coding mode information obtained by encoding the first image block in the first video, where the first image block is a plurality of image blocks divided by the first video according to preset division rules one piece of

[0054] Wherein, the first rate-distortion cost i...

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Abstract

The embodiment of the invention provides an encoding method and device. The method comprises the following steps: acquiring a first rate distortion cost and encoding mode information obtained by encoding a first image block in a first path of video, and encoding a second image block in a second path of video by using the encoding mode information to obtain a second rate distortion cost; and when the second rate distortion cost is not larger than a rate distortion threshold, determining that encoding of the second image block is finished. In the scheme, the encoding mode information and first rate distortion value of the first image block are acquired from the first path of encoded video, the second image block in the second path of video is encoded with the encoding mode information, and other encoding modes are not selected any more under the situation that the second rate distortion cost is not larger than the rate distortion threshold, so that the overall encoding time is shortened.Compared with lossless encoding, the code rate for encoding the second path of video in the scheme is lower, and the compression efficiency is improved.

Description

technical field [0001] The present invention relates to the field of multimedia technology, in particular to an encoding method and device. Background technique [0002] Before the video goes online on the video website, it needs to be processed through video encoding to obtain the desired video. For the same video, the requirements for online video in different regions are different. For example, videos online in some regions can carry watermarks, while some regions cannot carry watermarks. Based on this, for the same video, multiple different versions need to be produced to meet different needs. [0003] Therefore, currently, for the same video, multiple channels of video encoding need to be performed, and each channel of video encoding generates videos with different requirements. When encoding multiple channels of video, the current main encoding method is encoding multiplexing. Specifically, when encoding one channel of video first, and then encoding another channel o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/147H04N19/103H04N19/19
CPCH04N19/103H04N19/147H04N19/176H04N19/19
Inventor 陈科吉
Owner 上海众源网络有限公司
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