mp3gain ☆

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Description:
Lossless mp3 normalizer with statistical analysis

Type: Formula | Latest Version: 1.6.2@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Multimedia

Tags: audio mp3 normalization multimedia lossless

Install: brew install mp3gain

About:
Mp3gain analyzes and adjusts MP3 files to a target volume level without re-encoding, preserving original audio quality. It performs statistical analysis to prevent clipping and applies track or album-based gain adjustments. This tool is ideal for standardizing audio libraries for consistent playback volume across devices.

Key Features:

Lossless volume normalization without re-encoding
Clip prevention through statistical peak analysis
Supports both track and album gain modes
Reversible adjustments with original file restoration

Use Cases:

Standardizing volume across a personal music collection
Preparing MP3s for consistent playback on portable devices
Batch processing large libraries for uniform audio levels

Alternatives:

ffmpeg – More versatile but requires re-encoding for volume adjustment
ReplayGain – Metadata-based approach, widely supported but requires player support

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 4:44am	1.6.2	0	VERSION_BUMP	14fb3775
Sep 14, 2024 8:32am	1.6.2	0	VERSION_BUMP	fbfc09da