Distributed multi-format digital video transcoding construction design method

A distributed, multi-format technology, applied in the fields of digital video signal modification, television, electrical components, etc., can solve the problems of low computational complexity, poor video quality, short transcoding time, etc., to improve the transcoding rate and expand the application. effects of the environment

Inactive Publication Date: 2009-06-17
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of transcoder does not need to perform motion estimation again, the calculation complexity is small, and the transcoding time is short, but the video quality after transcoding is poor, which cannot meet the requirements of high-definition programs
In addition, the function of a general transcoder is that it can only transcode one format into another at the same time, and cannot adaptively transcode multiple video formats at the same time, which often cannot meet the requirements of providing different codecs for different terminals. The state of the stream, adding a lot of extra transcoding workload

Method used

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  • Distributed multi-format digital video transcoding construction design method
  • Distributed multi-format digital video transcoding construction design method
  • Distributed multi-format digital video transcoding construction design method

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Embodiment Construction

[0025] refer to figure 1 As shown, in the distributed multi-format video transcoding system, the Server-Transcoder model is adopted. Server is the main control machine of the distributed transcoding system, which plays the role of coordinating control and transcoding function, while Transcoder is a transcoding machine, which mainly performs transcoding operations. Both Server and Transcoder are PCs. The non-transcoded video source files are stored in the disk, and the server's splitter splits the video source files, and the split non-transcoded video segments are sent to each Transcoder by the sending process. After receiving the video clips and transcoding parameters, the Transcoder performs transcoding. After the transcoding work is completed, under the coordination of the Server, the Transcoder transmits the transcoded video clips to the designated location, and the server's combiner splices them to form A complete video file is written to disk.

[0026] In this distribut...

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Abstract

The invention discloses a method for designing a distributed type multiformat video transcoding structure, which comprises the following steps: rapidly dividing a video in a seamless mode after de-multiplexing an original video file, transmitting video segments and audio files to each of transcoding PCs for carrying out rapid multiformat transcoding through a dynamic scheduler process, the decoding only needs once after inputting the video with a certain format, then various formats of code screams can be output, and the code rate control can be carried out to the output code stream well, finally collecting the video segments after the transcoding to carry out a seamless splitting and multiplexing with the audio files after the transcoding. The invention improves the transcoding rate of a pixel area cascade decoder, which increases the quality of the video after the transcoding.

Description

technical field [0001] The invention belongs to the field of distributed video codec and transcoding. In particular, it relates to a distributed cascade full-decoding and full-coding multi-format digital video transcoding structure design method. Background technique [0002] Digital video transcoding technology is the conversion from one video encoding stream to another encoding stream. This conversion includes many operations, such as changing the bit rate, frame rate, resolution and encoding format of the video. The main purpose of transcoding is to convert the input compressed video stream into a video code stream that meets the diversity requirements of the receiving end. [0003] There are many compression standards for digital video, including MPEG and H.26x series, etc. The need for conversion between different video formats has prompted the development of video transcoding research. In the field of digital TV broadcasting and IPTV systems, in order to enable users...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/174H04N19/196H04N19/40H04N19/70
Inventor 薛建儒杨国安田智强胡伟付强杨致远兰旭光郑南宁
Owner XI AN JIAOTONG UNIV
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