A video transcoding method and transcoder from h.264 to h.265

Abstract

The present invention proposes a video transcoding method from H.264 to H.265, including the H.264 decoding process and the H.265 encoding process. Decode to the pixel domain, and extract the coded macroblock type, coded block mode, residual of each macroblock in all I frames, and the coded macroblock type, motion vector, reference frame and Residual: The H.265 encoding process is to perform H.265 encoding according to the H.264 decoding result to obtain the H.265 video, including performing corresponding processing according to the CTU setting and frame type, appropriately reducing search branches, and reducing encoding complexity Spend. Therefore, the present invention can effectively reduce video transcoding time while ensuring less video quality degradation and little bit rate increase, and contributes to the promotion of the H.265 standard and saves network bandwidth.

Description

technical field [0001] The invention belongs to the two fields of image compression technology and computer technology, and specifically relates to a technical solution for fast transcoding from H.264 to H.265. Background technique [0002] At present, my Internet business has entered a period of rapid development, and the status of multimedia technology in people's work, study, and entertainment is becoming more and more important. As the most important and expressive video coding technology in multimedia technology, it is also developing rapidly with the times. From H.261 proposed in 1990 to the previous generation of video coding standard H.264, video coding technology has been continuously updated and improved for decades. Now ITU-T VCEG has released a new generation of video coding standard H.265 (also known as HEVC). Compared with the previous coding standard, H.265 adopts more advanced coding technology and improves coding efficiency. [0003] Currently, one of the ...

AI Technical Summary

Problems solved by technology

However, this method has a very important disadvantage, that is, it requires quite a lot of computing resources, and the time consumption is too large, especially for H. difficulty

Often, independent decoding and encoding of the video signal may also result in a loss of video quality, since decisions made during re-encoding do not take into account the parameters of the original encoding

[0008] Therefore, the current H.264 to H.265 transcoder is not efficient in transcoding, consumes a lot of resources, and the equipment is expensive, which often cannot meet the actual engineering needs

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