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
Sep 30, 2023 9:42am 1.6.2 0 VERSION_BUMP eb3707a9
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