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hojene
Participating Frequently
November 20, 2018
Answered

The length of the clip changes when the sound intensity is matched.

  • November 20, 2018
  • 1 reply
  • 2539 views

Wave files are controlled by Adobe Audition and Gold Wave respectively, and the volume is adjusted with automatic gain. Use cbr.

In the case of an Adobe Audition, however, the file length will vary.

It will not match the video.

I would like to continue using the Adobe Audition.

This topic has been closed for replies.
Correct answer ryclark

you're right. Editing as original is the most accurate. But why is it that the length of the sound source is the same when you convert mp3 to light software like gold wave?

(I am a Korean who can not speak English. Sorry. You are talking to a Google Translator.)


So cannot answer that one. However any audio edited for recombining with video should be kept in uncompressed form like .wav for all sorts of reasons.

hojene  wrote

(I am a Korean who can not speak English. Sorry. You are talking to a Google Translator.)

You are managing very well with Google Translator as English is not your native language.

1 reply

ryclark
ryclark
Participating Frequently
November 20, 2018

Can you explain in a bit more detail exactly what you are doing in Audition and what format the audio files are in before and after processing? How much does the length of the audio change by and what are the before and after file sizes?

H
hojeneAuthor
Participating Frequently
November 21, 2018

ryclark
ryclark
Participating Frequently
November 21, 2018

Thank you. But the reason I showed you the mixdown screen is the change in the length of the source. I work on the waveform screen. We used the method of automatic saving after applying effect from the sound intensity matching menu of waveform screen. This method is very easy to use, but the length of the sound source varies slightly, so it can not be used in movies. However, if the sound intensity is matched on the waveform screen and saved separately without saving automatically, the length will not change.

Automatically save after matching sound intensity.

If you put the output on the timeline, it will be longer than the original. Sometimes it gets shorter.


I am not sure that I quite understand what you mean by 'autosave' as different from saved separately.

But I will say that since you are saving your audio to an .mp3 compressed file unfortunately the length of the file will tend to vary. This is because .mp3 saves audio data as fixed block sizes and if your audio doesn't fit into that sized of block then the codec for .mp3 will tend to add data padding in order to fill the next block size. Also different audio mp3 decoders tend to give different times for the compressed audio because it is difficult to calculate the correct playing time of compressed audio data particularly if it has been saved as VBR (Variable Bit Rate) .mp3. The only safe way to get consistent length audio files is to store it as uncompressed .wav files I'm afraid.

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