m4b-extractor

Rust CLI tool to extract chapters, metadata and cover for M4B Audiobook. . Based on idea of Hasan Arous.

Requirements

• Rust
• FFmpeg installed and available in your PATH

Installation

You can install m4b-extractor with Cargo.

cargo install m4b-extractor

Usage

You have to pass the path to the .m4b file you want to extract chapters from.

m4b-extractor /path/to/input.m4b

You will get a directory named <input_file>_chapters containing:

• Each chapter as a separate .mp3 file.
• A metadata.json file with the metadata of the book.
• A tags.yaml file with the tags of the book.
• A folder.jpg file with the cover of the book.

1_Chapter 01.mp3
2_Chapter 02.mp3
3_Chapter 03.mp3
# ...
folder.jpg
metadata.json
tags.yaml

Options

m4b-extractor --help

• -o, --output <OUTPUT>: Specify the output directory for extracted chapters (default: <input_file>_chapters).
• -k, --keep: Keep the original .m4b files without converting them to .mp3.
• -q, --quality <QUALITY>: Specify the conversion quality (1=best, 9=worst) for .mp3 files (default: 2).
• -s, --sanitize: Sanitize filenames by replacing invalid characters with underscores (default: false).
• -h, --help: Print help information.
• -V, --version: Print the version of the tool.

Build and publish

Build and test the package:

cargo test
cargo build --release

Test publishing:

cargo publish --dry-run

Publish the package to crates.io:

cargo publish

License

This project is licensed under the MIT License - see the LICENSE file for details.