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October 20, 2023 04:34
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Speed up mp3 files in a folder (for example, an audiobook)
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| #!/bin/bash | |
| # Run in a folder with desired mp3s | |
| mkdir sped_up | |
| mkdir sped_up_louder | |
| find . -name "*.mp3" -exec bash -c 'ffmpeg -i "$0" -filter:a "atempo=1.12, dynaudnorm" -vn "sped_up/${0%.mp3}_sped_up.mp3"' {} ; | |
| cd sped_up || exit | |
| find . -name "*_sped_up.mp3" -exec bash -c 'ffmpeg -i "$0" -filter_complex "compand=attacks=0:points=-80/-900|-45/-15|-27/-9|0/-7|20/-7:gain=6" -vn "../sped_up_louder/${0%.mp3}_louder.mp3"' {} \; | |
| cd .. |
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