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Transcoding method and device

A transcoding and encoding type technology, applied in the field of transcoding, can solve the problem of taking a long time, save time and speed up the transcoding process

Inactive Publication Date: 2016-08-24
LETV CLOUD COMPUTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide a transcoding method and device to solve the technical problem in the prior art that it takes a long time to transcode H.264 video blocks into H.265 video blocks

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  • Transcoding method and device

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] figure 1 It is a transcoding method provided by an embodiment of the present invention, comprising the following steps:

[0032] S101: Acquire 16 H.264 video macroblocks.

[0033] Specifically, the size of an H.264 video macroblock is 16x16, and H.265 adopts a fixed CTU (codingtree blocks, tree coding unit) format, and its CTU size is 64x...

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Abstract

The invention discloses a transcoding method and device. The method comprises the following steps: obtaining 16 H.264 video macro blocks; judging the coding types of the 16 H.264 video macro blocks; if the coding types of the 16 H.264 video macro blocks are intra-frame coding, enabling the 16 H.264 video macro blocks to be transcoded into one H.265 coding tree unit CTU according to the preset intra-frame transcoding correspondence relation; and if the 16 H.264 video macro blocks are inter-frame coding, enabling the16 H.264 video macro blocks to be transcoded into one H.265 CTU according to the preset interframe transcoding correspondence relation. The device comprises an obtaining module, a judgment module, a first transcoding module and a second transcoding module. The H.264 video macro blocks do not need to be decoded into original video data, so that transcoding process can be accelerated, and time is saved.

Description

technical field [0001] The invention belongs to the technical field of computer network communication, and in particular relates to a transcoding method and device. Background technique [0002] With the development of computer network communication technology, video has become an important way of information dissemination and display. In order to facilitate the dissemination and display of video, video data is often compressed and encoded. In the past, mainstream encoders in the industry used the H.264 (also called AVC (Advanced Video Coding, Advanced Video Coding)) encoding standard, while H.265 (also known as HEVCH (High Efficiency Video Coding, high-efficiency video coding)) can save nearly 50% of the bit rate when providing the same quality code stream as H.264. Due to the high compression efficiency of H.265, in In the foreseeable future, it will have a wide range of application scenarios and shine in the industry. For this reason, how to quickly transcode H.264 into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/40
CPCH04N19/176H04N19/40
Inventor 蔡砚刚白茂生祁海杨帆刘阳魏伟
Owner LETV CLOUD COMPUTING CO LTD
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