Audio-video file locating method and device

A file positioning, audio and video technology, applied in the media field, can solve the problems of heavy system operation load, many resources occupied, low efficiency of audio and video file positioning, etc., to achieve the effect of reducing consumption and improving positioning efficiency and accuracy

Inactive Publication Date: 2015-03-04
SHENZHEN HUABAO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the existing method locates the audio and video files, it is necessary to traverse the entire audio and video files before locating to the specified position, which will lead to a large operating load of the system and take up many resources, making the positioning efficiency of the audio and video files low

Method used

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  • Audio-video file locating method and device
  • Audio-video file locating method and device
  • Audio-video file locating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 The first implementation flow of the method for locating audio and video files provided by Embodiment 1 of the present invention is shown. For convenience of description, only the parts related to the present invention are shown.

[0051] In the embodiment of the present invention, the method is applied to locate frame information in audio and video files, the audio and video files include but not limited to audio and video files of vehicle-mounted video terminals, audio and video files of TV sets / set-top boxes, and the like.

[0052] The audio and video file is provided with file frame information at the file header, and the basic information of each frame in the audio and video file is recorded in the file frame information. Preferably, the file frame information includes link list length, frame information link list and file content. As shown in Table 1, it is the structure of the file frame information provided by the embodiment of the present invention. ...

Embodiment 2

[0072] figure 2 The specific implementation process of step S103 in the method for locating audio and video files provided by the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the present invention are shown.

[0073] In the embodiment of the present invention, the offset address of the frame to be positioned in the audio and video file is obtained by comparing the display time stamps of each frame in the audio and video file. Therefore, it is only necessary to traverse the display of each frame in the file frame information Timestamp will do. Step S103 will be described in detail below.

[0074] Such as figure 2 As shown, step S103 includes:

[0075] In step S201, the length of the linked list of the file frame information is read.

[0076] In the embodiment of the present invention, the length of the linked list is the length of the frame information linked list; the frame information linked list incl...

Embodiment 3

[0086] image 3 The composition structure of the audio-video file locating device provided by the third embodiment of the present invention is shown, and for the convenience of description, only the parts related to the present invention are shown.

[0087] In the embodiment of the present invention, the device is used to realize figure 1 and figure 2 The method for locating audio and video files described in the embodiments may be a software unit, a hardware unit or a combination of software and hardware built in the mobile terminal. The mobile terminal is preferably a vehicle-mounted video terminal, a television, a set-top box or a mobile phone.

[0088] Such as image 3 As shown, the device includes:

[0089] The timestamp acquisition module 31 is configured to acquire the timestamp of the frame to be located in the audio and video file.

[0090] The file frame information reading module 32 is configured to read the file frame information of the audio / video file.

[...

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Abstract

The invention is suitable for the field of media technology and discloses an audio-video file locating method and device. The audio-video file locating method includes that acquiring the time stamp of a frame to be located in an audio-video file; reading the file frame information of the audio-video file; acquiring the offset address of the frame to be located in the audio-video file from the file frame information according to the time stamp; reading the audio-video file behind the offset address. The audio-video file locating method realizes to quickly locate the audio-video file according to the time stamp of each frame in the audio-video file, solves the problem of high system load due to the fact that the existing method needs to traverse the whole audio-video file, reduces the system resource consumption and greatly improves the audio-video file locating efficiency and precision.

Description

technical field [0001] The invention belongs to the field of media technology, and in particular relates to a method and device for locating audio and video files. Background technique [0002] When locating audio and video files in the existing method, it is necessary to traverse the entire audio and video file before locating to a specified position, which will lead to a large operating load of the system and consume many resources, making the positioning efficiency of audio and video files low. Contents of the invention [0003] In view of this, embodiments of the present invention provide a method and device for locating audio and video files, so as to improve the efficiency and accuracy of locating audio and video files by reducing the operating load of the system. [0004] In the first aspect, a method for locating audio and video files, the method includes: [0005] Obtain the time stamp of the frame to be positioned in the audio and video file; [0006] Read the ...

Claims

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Application Information

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IPC IPC(8): H04N21/439H04N21/44H04N21/8547
CPCH04N21/4394H04N21/44008H04N21/8547
Inventor 庄少华陈文明江常杯
Owner SHENZHEN HUABAO ELECTRONICS TECH
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