ffmpeg volume parameter format

Posted by tanon on Super User See other posts from Super User or by tanon
Published on 2011-05-18T04:36:59Z Indexed on 2012/10/24 5:12 UTC
Read the original article Hit count: 255

Filed under:

audio

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ffmpeg

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parameters

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amplification

ffmpeg's -vol parameter is confusing me.

256 => normal (i guess meaning same as input volume, no change)
512 => (double the volume - read this somewhere).

So what to do for 3 times the volume? 1.5 times the volume?

Basically, lets say I have the max sound amplitudes (audacity levels) in 3 files as:

0.8
0.6
0.9

I want to amplify in the first two files, so that max=0.9 in all files. What parameters of -vol I would use?

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