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What would you like to do?
Slow down or speed up all MP3 files in a folder with FFmpeg.
#/bin/sh
speed="0.7"
mkdir "speed-${speed}x"
for f in *.mp3
do ffmpeg -i "$f" -filter:a "atempo=${speed}" "./speed-${speed}x/$f"
done
@ac1982

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@ac1982 ac1982 commented May 28, 2021

so cool, thanks for your help.

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