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A method for splicing audio streams

An audio and code stream technology, applied in the field of audio code stream splicing, can solve the problems of low editing efficiency and achieve the effect of improving efficiency, maintaining quality and reducing loss

Inactive Publication Date: 2017-06-13
NEWAUTO SILICON VALLEY VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of encoding and decoding is a very complicated process, so the editing efficiency is very low

Method used

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  • A method for splicing audio streams

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Experimental program
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Effect test

Embodiment 1

[0015] Embodiments of the present invention provide a method for splicing audio streams, such as figure 1 , including the following steps:

[0016] Step 101, read the audio data parameters of the audio segment;

[0017] The audio data parameters include:

[0018] Cut-in point TrimIn, cut-out point TrimOut, audio data block start position, audio data block end position, the number of samples AudioFrameSampleCount contained in each audio unit AudioFrame, and the historical audio synchronization compensation number AudioSyncOffset;

[0019] Wherein, the audio segment includes at least one audio data block, the audio data block includes at least one audio unit AudioFrame, and the audio unit AudioFrame includes at least one sample.

[0020] Step 102, judging whether the audio segment needs to be reconstructed according to the audio data parameters;

[0021] If so, then enter step 103, if not, then enter step 104;

[0022] Specifically include:

[0023] Comparing the cut-in poi...

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PUM

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Abstract

The invention discloses a method for splicing audio code streams. By reading the audio data parameters of an audio segment; judging whether the audio segment needs to be reconstructed according to the audio data parameter; if so, reconstructing the audio segment , if not, then copy the audio segment, and then complete the splicing of the audio code stream, and realize that only the audio unit where the cut is located may need audio reconstruction, while most of the other audio units only need to be copied, greatly Improve the efficiency of synthesis, reduce the loss of audio quality, and maintain the quality of the original audio.

Description

technical field [0001] The invention relates to the field of video and audio clipping, in particular to a method for splicing audio code streams. Background technique [0002] With the enhancement of computer processing power, video and audio processing technology has also made great progress. In the process of video and audio processing, video and audio editing is the most commonly used technology. [0003] Video and audio editing in the prior art is generally based on video frames and audio frames, which are first decoded, edited, re-encoded, and then output. The process of encoding and decoding is a very complicated process, so the editing efficiency is very low. [0004] However, audio coding is based on an Audio Frame. For example, AAC format audio coding generally contains 1024 samples in an Audio Frame. AC3 format audio coding generally contains 1536 Samples in one Audio Frame. Mpeg Audio format audio coding generally contains 384, 576 or 1152 Samples in one Audio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B27/031G11B27/10
Inventor 夏永宏
Owner NEWAUTO SILICON VALLEY VIDEO TECH