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Audio track switching method, system thereof and audio and video file playing device

A technology for audio playback and audio tracks, which is applied in the field of audio and video processing, and can solve problems such as slow switching of audio tracks

Active Publication Date: 2012-02-08
TCL CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for switching audio tracks, which aims to solve the problem that in the prior art, when switching audio tracks according to the standard AVI mode, it needs to be synchronized with the video, resulting in a slower speed of switching audio tracks

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  • Audio track switching method, system thereof and audio and video file playing device
  • Audio track switching method, system thereof and audio and video file playing device
  • Audio track switching method, system thereof and audio and video file playing device

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0026] The present invention provides a sound track switching method, which includes the following steps:

[0027] While sending the audio data frame of the currently playing audio track to the decoder for decoding and playing, calculate the synchronization stamp of the backup audio track;

[0028] Receive audio track switching instructions input by the user;

[0029] According to the audio track switching instruction, search for the audio data frame and synchronization stamp of the audio track to be switched;

[0030] Send the found audio data frame and synchronization stamp of the audio track to ...

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Abstract

The invention is applied to the audio and video processing technology field, and provides an audio track switching method, a system thereof and an audio and video file playing device. The method comprises the following steps: sending an audio frequency data frame of a present playing audio track to a decoder to carry out decoding playing, and calculating synchronization stamp of a standby audio track simultaneously; receiving an audio track switching instruction inputted by a user; according to the audio track switching instruction, searching an audio frequency data frame and synchronization stamp of an audio frequency needing to be switched; sending the searched audio frequency data frame and synchronization stamp of the audio frequency needing to be switched to the decoder to carry out decoding playing. In an embodiment of the invention, the audio frequency data frame of the present playing audio track is sent to the decoder to carry out decoding playing, and the synchronization stamp of the standby audio track is calculated simultaneously; the audio track switching instruction inputted by a user is received; according to the audio track switching instruction, the audio frequency data frame and synchronization stamp of the audio frequency needing to be switched is searched; the audio frequency data frame and synchronization stamp are sent to the decoder to carry out decoding playing, and rapid switching of the audio track is realized.

Description

Technical field [0001] The invention belongs to the technical field of audio and video processing, and in particular relates to an audio track switching method, system and audio and video file playback equipment. Background technique [0002] Audio Video Interleaved (AVI) uses a file format that combines voice and image synchronization. It uses a lossy compression method for video files, but the compression is relatively high. Although the video quality is not very good, but Its application range is still very wide. AVI files support 256 colors and RLE compression. AVI information is mainly used on multimedia discs to save various image information such as TV and movies. [0003] The data block of an AVI file contains the actual data stream, that is, image and sound sequence data. The main body of the actual data stream file is also the main part of determining the file capacity. The size of a video file is equal to the data rate of the file multiplied by the length of time that ...

Claims

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Application Information

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IPC IPC(8): G11B19/02G11B20/10
Inventor 黎建中刘纹高
Owner TCL CORPORATION
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