Install mp3gain-express with Homebrew Cask

Project links

• Homepage
• Package manager page

Commands and aliases

No executable aliases were found in the local package database.

Project history

The developer began this native macOS port shortly before OS X Lion because an earlier third-party Mac port had gone unmaintained and included PowerPC-era components. The first public release arrived in 2012. The initially minimal application later incorporated more of the original tools’ capabilities while retaining a native Mac interface.

Adoption history

The port accumulated features in response to user requests, including folder traversal, clipping prevention, undo, album gain, AAC support, translations, dark mode, multithreaded processing, notarization, and Apple Silicon support. The developer characterizes maintenance as occasional because the underlying gain tools are mature.

How it is used

Users add MP3 or AAC files, analyze their loudness, select a target level, and apply track or album gain. The application can write ReplayGain information, directly adjust audio data without re-encoding, and undo supported prior changes. Its author explicitly advises backing up files and avoiding video files, even when they use an .mp4 extension.

Why package nerds care

MP3Gain Express preserves the ReplayGain-era workflow of normalizing perceived loudness without re-encoding audio. It is notable to package users as a native Mac front end around the established MP3Gain and AACGain engines, with builds spanning several macOS architecture and security transitions.

Timeline

• 2012: Version 1.0 released with analysis and track-gain support.
• 2014: Version 1.2 added drag-and-drop and folder input.
• 2017: Version 2.0 added album gain, AACGain, and multithreaded processing.
• 2018: Version 2.3 was notarized for macOS Mojave.
• 2020: Version 2.4.1 added native Apple Silicon support.
• 2021: Version 2.5 restored AAC handling and added a Czech translation.

Related projects

• MP3Gain provides the MP3 gain-analysis engine.
• AACGain extends the workflow to AAC audio.
• An earlier independent Mac port by Bery Rinaldo motivated this replacement after becoming outdated.

Sources

• Official project page and Q&A: https://projects.sappharad.com/mp3gain/
• Official source repository: https://github.com/Sappharad/mp3gainOSX
• Official version history: https://projects.sappharad.com/mp3gain/history.html