flacser

Lossless audio conversion, without the friction.

Convert FLAC, AIFF, and WAV files with a focused command-line tool that puts ffmpeg to work and stays out of the way.

flacser

$ flacser convert ./music --to aiff --recursive
[1/24] processed
[24/24] processed
Summary: total=24, converted=24, skipped=0, failed=0, workers=7

Built for the library

A few reasons to keep it in your toolkit.

Convert a file or point flacser at a directory. Recursive discovery is there when your library runs deep.

Independent conversions run in parallel, with a worker limit you can set when you need to.

Recursive directory conversions preserve paths from your input root instead of making a mess of your collection.

flacser lets ffmpeg carry metadata where the output container supports it.

No surprises

Before conversion starts, flacser plans output paths and detects collisions. Outputs already present when their job starts are skipped.

Each conversion is atomical, it writes the concerted file only when ffmpeg succeeds. Source files are never modified.

Three formats, every direction

Format	Read	Write	Notes
FLAC	Yes	Yes	Uses the FLAC encoder.
AIFF	Yes (.aiff, .aif)	Yes (.aiff)	PCM codec follows the source audio.
WAV	Yes	Yes	First audio stream only; cover art and non-audio streams are dropped.

Get started

flacser requires ffmpeg and ffprobe on your PATH.

brew install chrizzlekicks/flacser/flacser

Install flacser on macOS with Homebrew.

cargo install flacser

Install the latest published flacser release.

cargo build --release

Run the resulting binary at target/release/flacser.

Usage

flacser convert ./music --to aiff --recursive --output-dir ./converted

Use --dry-run to run conversion planning without running ffmpeg or ffprobe.

flacser doctor ./music --to aiff

Doctor is read-only and reports whether your system is ready.

Your library, your way

Get started