How can I fix incorrect mp3 duration?

MP3 Diags can fix incorrect durations (and other errors). It is open source and in the repositories. It is a GUI Tool.

Installation

sudo apt-get install mp3diags mp3diags-doc

Another option is MP3val, which can be used either via commandline or via GUI:

Installation

sudo apt-get install mp3val

Usage example

mp3val damaged.mp3 -f -t

-f: fix errors, -t: keep original timestamp

If you don't want to install anything new, try with ffmpeg:

ffmpeg -i file_orig.mp3 -acodec copy file_fixed.mp3

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