Method for extracting audio and video data from multimedia

An audio, video and multimedia technology, applied in the field of audio and video processing, can solve the problems of difficulty in obtaining data, heavy workload and slow speed of audio and video data, and achieve the effect of overcoming complexity.

Inactive Publication Date: 2012-10-03
河北一谈文化传播有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0010] The present invention mainly solves the technical problems in the prior art that manual construction of links to extract audio and video data has a large workload, slow speed, poor versati...

Method used

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  • Method for extracting audio and video data from multimedia
  • Method for extracting audio and video data from multimedia
  • Method for extracting audio and video data from multimedia

Examples

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Embodiment

[0034] Embodiment: a kind of method of extracting audio and video data from multimedia in the present embodiment, as figure 1 As shown, the details are as follows:

[0035] 1. Build a complete media rendering link: as long as the file can be played normally, you can use the DerectShow smart connection method to call the Render method of the graph manager to directly get a complete link graph (see figure 2 ), the multimedia data is separated into audio and video signals by the audio and video separator 3 after passing through the source filter 1 and the pre-filter 2 in sequence. The video signal is rendered and played by the device 6, and the video signal enters the video decoder 7 to be decoded and filtered by the video filter 8, and then enters the video renderer 9 for rendering and playback. The pre-filter 2, the audio filter 5 and the video filter 8 are all filters. Instead of just including one filter, various media files and web media can be supported.

[0036] 2. Dyna...

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Abstract

The invention discloses a method for extracting audio and video data from multimedia. The method mainly includes: firstly, setting up a complete media rendering chain in a DirectShow manner; secondly, disconnecting a renderer at the tail end; thirdly, inserting a screener before the renderer at the tail end and recovering connection; fourthly, extracting audio and video data through the inserted screener; fifthly, subjecting the extracted data to distribution and processing; and sixthly, delivering the processed data to an application layer. Therefore, audio and video data can be obtained in the playing process. The method for extracting audio and video data from multimedia is supportive to extensive media formats and applicable to the field of audio and video application.

Description

technical field [0001] The invention relates to the field of audio and video processing, in particular to a method for extracting audio and video from multimedia. Background technique [0002] In multimedia projects, it is often necessary to use specific formats of audio and video data for transmission, but the data sources are different, some are media files in various formats (flv\rmvb\avi\mp4, etc.), and some are network media streams (mms, etc. ), if link processing is performed for each specific source, it is very cumbersome and not universal. [0003] Media sources mainly include file types and network data stream types. Our common file types include AVI, RMVB, MOV, FLV, MP4, etc. Each file type corresponds to a different media container, which encodes various The audio and video data are organized and encapsulated in a specific format. Common types of network data streams include Microsoft's MMS and RTSP, etc., which also have specific data formats. [0004] In the...

Claims

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Application Information

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IPC IPC(8): H04N21/434H04N21/4385H04N21/439
Inventor 陈刚
Owner 河北一谈文化传播有限公司
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