audio-normalize

Audio Normalization Script for Python/ffmpeg. I've only tested it with Python 2.6, not Python 3. The script RMS-normalizes media files (video, audio) to -26 dB RMS. It outputs PCM WAV files named as normalized-<input>.wav. It can also do peak normalization.

Requirements

• Python
• Recent version of ffmpeg (download a static build if you don't want to compile) in your $PATH

Usage

Very simple:

./normalize.py -i <input-file> -v

Options

• -f, --force Force overwriting existing files
• -l LEVEL, --level LEVEL level to normalize to (default: -26 dB)
• -p PREFIX, --prefix PREFIX Normalized file prefix (default: "normalized")
• -m, --max Normalize to the maximum (peak) volume instead of RMS
• -v, --verbose Enable verbose output
• -n, --dry-run Show what would be done, do not convert