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Real-time streaming media cluster transcoding system

A real-time streaming and transcoding technology, which is applied in the transmission system, electrical components, pulse modulation TV signal transmission, etc., can solve the problems of unable to meet the real-time transcoding output of streaming media, and achieve the effect of solving the problem of excessive calculation

Inactive Publication Date: 2010-10-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this technology demultiplexes, divides, merges, and multiplexes code streams, each module works sequentially, that is, this technology needs to divide the elementary streams according to the number of execution terminals after demultiplexing into audio and video elementary streams into several fragments for transcoding processing, and then collect and merge all the fragments into new audio and video elementary streams, and finally multiplex and output the audio and video elementary streams according to the settings. In each transcoding task, each module works in time-sharing, so The input and output data must be a multimedia code stream in the form of a file, which cannot meet the requirements of real-time transcoding output of streaming media

Method used

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  • Real-time streaming media cluster transcoding system

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Embodiment

[0020] In this embodiment, the original audio format is MPEG2L2 (two-channel, 48kHz, 96kbps), the video format is MPEG21080i (resolution is 1920X1080, frame rate 25fps, code rate is 16Mbps), the multiplexing format is MPEG2TS (transport code stream), The real-time code stream input by UDP (User Data Packet Protocol) is transcoded into MPEG2AAC (two-channel, 48kHz, 96kbps), the video format is H.264720p (resolution 1280X720, frame rate 25fps, code rate 4Mbps), multiplexing The format is MPEG2TS, and the code stream is output in UDP in real time.

[0021] like figure 1 As shown, this embodiment includes: a user control module, a task management module, a system scheduling module, a data acquisition module, a data push module, several audio and video transcoding modules and an internal data transmission module, wherein: the user control module and the task management module Connected to transmit task information and code stream analysis information, the user control module is co...

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Abstract

The invention discloses a real-time streaming media cluster transcoding system, belonging to the technical field of video information process, and comprising a user control module, a task management module, a system scheduling module, a data acquisition module, a data pushing module, a plurality of audio / video transcoding modules and an internal data transmission module, wherein, the task management module comprises a user interaction submodule, a task monitoring submodule, a task forcasting submodule and a self-study optimization submodule, wherein the system scheduling module comprises a node distribution submoduel, a data distribution submodule and a dynamic regulation submodule; the data pushing submodule comprises a data splicing submodule, an audio / video multiplexing submodule and a data output submodule; the audio / video transcoding module comprises a transcoder management submodule, an audio / video coding submodule, an audio / video decoding submodule and an audio / video data processing submodule. The real-time streaming media cluster transcoding system outputs audio / video data in different forms according to different demands, thereby realizing real-time processing and transcoding the high-definition and standard-definition streaming media data.

Description

technical field [0001] The invention relates to a system in the technical field of video information processing, in particular to a real-time streaming media cluster transcoding system. Background technique [0002] In the current audio and video codec field, there are international standards for different applications, such as MPEG-2 (Moving Picture Exports Group, Moving Picture Experts Group), MPEG-4, H.263 and AVC (Advanced Video Coding, advanced video coding ) and so on, these standards use different encoding methods and compression techniques to process the original video data, and transcode the original image sequence with a huge amount of data into compressed code streams in different formats. These standards are widely used in the fields of digital TV, Internet TV and mobile TV, but there are different technical standards on the information source, transmission system and receiving terminal for different applications. In systems that only support a certain standard o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/52H04L29/06
Inventor 李伟孙军张一新孙思慧王兴东
Owner SHANGHAI JIAO TONG UNIV
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