Transcoding method used for similar video code stream and transcoding device thereof

A code stream and transcoding technology, applied in the field of transcoding, can solve the problems of unable to meet the requirements of audio and video synchronization, poor video or audio effect, slow soft decoding speed, etc., to achieve less time, improve utilization, and expand the scope of use Effect

Active Publication Date: 2009-06-17
ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the slow speed of soft decoding, especially on embedded devices, it is likely that the audio and video synchronization requirements cannot be met, and the video or audio played at the same time is not good.

Method used

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  • Transcoding method used for similar video code stream and transcoding device thereof
  • Transcoding method used for similar video code stream and transcoding device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] like figure 1 As shown, the transcoding device includes:

[0032] The source stream data analysis module is used to extract the video data from the file format, analyze it according to the source stream format, and obtain the parameters and conversion control parameters required by the existing decoder;

[0033] The data conversion control module is used to control the conversion of the source code stream data according to the requirements of the destination code stream;

[0034] The source code stream data conversion module is used to directly assign the data part of the same source code stream to the destination code stream and convert the data parts of different source code streams according to the requirements of the destination code stream;

[0035] The source code stream rearrangement module is used to arrange the converted data and the directly assigned data according to the format requirements of the target code stream;

[0036] The parameter information obtai...

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Abstract

The invention discloses a transcoding method used for similar video code streams, which comprises the following steps: firstly, analyzing sound code stream data, namely extracting video data from the file format, analyzing according to the sound code stream format, obtaining the parameter and the transformation control parameter which an existing decoder needs, secondly, transforming the sound code stream data, namely transforming the sound code stream data according to transformation control information, thirdly, resetting a sound code stream, namely carrying out the corresponding format arrangement to the data which is transformed in the second step or data which is directly transmitted according to the requirements of the format of a target code stream, and then obtaining the target code stream needed by the existing decoder. The method greatly expands the use range of an existing decoder in maximum, fully utilizes the existing decoder, and improves the availability ratio of a device with a decoder, in particular to an inlaid device with the hardware decoder.

Description

technical field [0001] The invention relates to a transcoding method for similar video code streams, and also relates to a transcoding device for realizing the method. Background technique [0002] Video files such as video telephony, video chat, and online video advertisements are more and more popular and pursued by people, which has led to the rapid development and further subdivision of video technology, and a large number of video file formats have emerged; different file formats have different codes. flow. [0003] Existing decoders can decode some common video code streams (hereinafter referred to as purpose code streams). Since the codes of existing decoders have been fixed, with the in-depth development of video technology and the large demand for network video, some Video streams similar to the target stream (hereinafter referred to as the source stream) often appear on the Internet and in people's entertainment life, but because the code of the decoder has been f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N19/40H04N19/44H04N19/88
Inventor 苏丹叶广明张浩胡胜发
Owner ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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