ffmpeg-album-normalise

Normalise music on an album-by-album basis using FFmpeg loudnorm, à la album ReplayGain

Usage

FFmpeg loudnorm is a two-pass process. Firstly, run:

python scan.py *.mp3

This will scan all the specified files for loudness and generate a levels.json file in the current directory with the results.

Then run:

python normalise.py *.mp3 --outfmt wav

This will normalise the (logarithmic) average loudness of the album to -24 LUFS, while preserving the relative differences in loudness between the individual tracks.

You can change the output filetype, output directory, target loudness and other options. Pass the --help flag for a list of command line arguments.