Author Topic: Stretching/compressing a sound track  (Read 1585 times)

Offline OS923

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Stretching/compressing a sound track
« on: June 23, 2016, 05:32:55 AM »
I want to combine the sound track of an English movie with the video of the German version.
The problem is that the German version is a bit faster.
How can I make the sound "shorter"?

Offline GaryN

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Re: Stretching/compressing a sound track
« Reply #1 on: June 23, 2016, 04:11:07 PM »
In OS9, Amadeus or Peak will allow you to shorten the audio in time without changing pitch - within reason.

Keeping things in sync is a different problem however. If there are sounds that need to occur at precise times ("hits" like door slams or any obvious sound that needs to occur in sync with the picture) then you need actual post software. Now you're looking at Final Cut or similar - in OSX. Something simpler like iMovie will allow you to chop up the audio and "slide" the pieces around to line up hits, but you're still in OSX.

It's impossible to give a more accurate answer from here without seeing and hearing what you're working with and exactly how well you want things to sync up.

Offline OS923

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Re: Stretching/compressing a sound track
« Reply #2 on: June 24, 2016, 03:49:08 AM »
I found what it is called: audio time-scale modification.

Offline OS923

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Re: Stretching/compressing a sound track
« Reply #3 on: June 24, 2016, 04:26:02 AM »
I found a free program for Windows that can do this.
Just choose Speed from the Effects menu.

Offline GaryN

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Re: Stretching/compressing a sound track
« Reply #4 on: June 24, 2016, 07:31:18 PM »
That's identical to what I first suggested using Amadeus or Peak, fancy process name notwithstanding.