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Method for recording file with audio/video frequency alternated format

A format file and video technology, applied in the field of recording audio and video interleaved format files, can solve the problem of recording system work efficiency reduction and other issues

Inactive Publication Date: 2010-03-24
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above method can replay the video and audio data recorded before the interruption, but because the file header changes frequently with the recording content, the working efficiency of the recording system is greatly reduced

Method used

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  • Method for recording file with audio/video frequency alternated format
  • Method for recording file with audio/video frequency alternated format
  • Method for recording file with audio/video frequency alternated format

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0026] Embodiments of the present invention provide a method for accessing video and audio data recorded before the interruption on the recording medium when an abnormal interruption occurs during the recording process.

[0027] image 3 It is a schematic diagram of the structure of the audio and video interleaved format file of the present invention. Please refer to image 3 , each audio and video interleaved format file is constructed by a data exchange file format block (RIFF chunk), and the data exchange file format block can include multiple sub-chunks (sub-chunks). Wherein, the data exchange file format sub-chunk can be a directory block (LIST chunk) or a regular sub-chunk (regular sub-chunk). For example, a directory block is a file header 301a...

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PUM

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Abstract

The invention discloses a method for recording alternate format file of audio frequency and video frequency. The alternate format file of audio frequency and video frequency comprises file head and content block. The inventive method comprises: writing preset value of multiple recording information in corresponding field in file head and content block; recording information is of audio and video length of alternate format file of audio frequency and video frequency; when receiving multimedia data, writing the multimedia data in content block, recording alternate format file of audio frequencyand video frequency; then correcting field corresponding to recording information of file head and content block according to actual value of recording information. The invention can assure the alternate format file of audio frequency and video frequency has complete and legal structure and can be normally accessed when recording process encounter non-normal interruption.

Description

technical field [0001] The invention relates to a file recording method, in particular to a method for recording audio and video interleaved format files. Background technique [0002] With the development of multimedia technology, the monitoring system has been able to track the image through real-time recording, for example: applied to the security monitoring system. The content recorded by such a monitoring system is of high importance, and the continuity of the recorded content is extremely high. [0003] Audio and video interleaved file (AVI file, audio and video interleaved file) is one of the most commonly used file formats for real-time video recording. The audio and video are cut into multiple data chunks, and the file format of interleaving the audio and video data chunks is interleaved. In the present invention, the interleaved data chunks are generally referred to as multiplexed media data. Moreover, the audio and video interleaved format file adopts the storag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/92G11B27/10
Inventor 庄顺宇林柏纬潘廷建
Owner SUNPLUS TECH CO LTD