Lossless MP3/AAC volume normalizer using ReplayGain
mp3rgain is a modern Rust reimplementation of the classic mp3gain tool. It adjusts MP3 volume losslessly by rewriting the per-frame global_gain field according to ReplayGain analysis, without re-encoding audio data. It also supports lossless AAC/M4A global_gain rewriting, making it a safe replacement for the unmaintained aacgain port.
mp3rgain is a modern Rust reimplementation of the classic mp3gain tool. It adjusts MP3 volume losslessly by rewriting the per-frame global_gain field according to ReplayGain analysis, without re-encoding audio data. It also supports lossless AAC/M4A global_gain rewriting, making it a safe replacement for the unmaintained aacgain port.
To install mp3rgain, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install mp3rgain
To see what files were installed by mp3rgain, run:
port contents mp3rgain
To later upgrade mp3rgain, run:
sudo port selfupdate && sudo port upgrade mp3rgain
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