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Video cluster transcoding system using image group structure as parallel processing element

A technology of parallel processing, image group, applied in the field of systems in the field of video information technology

Inactive Publication Date: 2008-01-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention combines the encoding structure of the existing video encoding standard, uses the image group structure as a parallel processing unit, applies the idea of ​​cluster computing to the field of video transcoding, and solves the existing pure hardware transcoding and pure software transcoding methods of video transcoding To provide an efficient and low-cost solution for video transcoding

Method used

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  • Video cluster transcoding system using image group structure as parallel processing element
  • Video cluster transcoding system using image group structure as parallel processing element

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Embodiment

[0035] Embodiment: the original audio format is MPEG-2 AC3 (mode is stereo, code rate is 128kbps), video format is MPEG-2 (video size is 720 * 576, frame rate is 25 frames / second, video code rate is 5Mbps), the multiplexing format is MPEG-2 TS format audio and video stream transcoding into AAC audio format (stereo mode, bit rate 96kbps), video format H.264 (video size 352×288, frame rate 25 frames per second, the video code rate is 512Kbps), and the multiplexing format is the implementation of the cluster transcoding system of MPEG-2 TS.

[0036] Fig. 1 shows the system structure diagram of this embodiment. The system structure can be logically divided into:

[0037] a. Host, including: user interface module 1, audio and video demultiplexing module 2, video segmentation module 3, cluster task scheduling module 4, video merging module 8 and audio and video multiplexing module 9;

[0038] b. Execution terminal, including: multiple video transcoding modules 6 and one audio-vide...

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Abstract

A video group code transfer system which uses an image group structure as parallel processor belongs to video information code transfer technical field. The invention comprises a user interface module, a video-voice de-multiplex module, a video cutting module, a group mission distributing module, a network connecting device, a video code transfer module, a voice code transfer module, a video synthesizing module, and a video-voice multiplex module. For resolving the defects of prior pure-hardware code transfer and pure-software code transfer methods, the invention comprise a system and relative modules which can combine the code structure of prior video coding standard, to apply group calculation into video code transfer field. The inventive method comprises that de-multiplexing, cutting, distributing, parallel transferring code, synthesizing, and multiplexing initial multimedia code flow into novel multimedia code flow, with high efficiency and low cost.

Description

technical field [0001] The present invention relates to a system in the technical field of video information, in particular to a video cluster transcoding system using a group of pictures structure as a parallel processing unit. Background technique [0002] In the field of video coding and decoding, there are many international standards produced in different periods. These standards often use different compression technologies and their combinations, and need to be decoded by different decoders before they can be played normally. In order to enhance the compatibility of decoding devices with different video compression standards, people usually use transcoding to convert video streams of different standards into required formats, so as to adapt to different applications. [0003] Video transcoding is to convert the original compressed video signal to another video compression method. The converted video and the original video can be different in terms of frame rate, frame ...

Claims

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Application Information

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IPC IPC(8): H04N7/52H04N7/26H04N21/434H04N21/44
Inventor 宋利王兴东孙军熊红凯孙思慧
Owner SHANGHAI JIAO TONG UNIV
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