Simple CLI

AAX Audio Converter provides a straightforward command-line interface that makes converting audiobooks quick and easy.

Supported Platforms

The CLI is available for:

• macOS (Intel and Apple Silicon)
• Linux (x64 and ARM64)
• Windows (x64)

Basic Usage

The simplest way to convert an audiobook:

aax convert audiobook.aax

This will:

• Convert the audiobook to MP3 format (default)
• Preserve chapter information
• Use auto-detected activation code
• Save to the default output directory

Common Commands

Convert with Options

# Specify output format
aax convert audiobook.aax --format m4b

# Set output directory
aax convert audiobook.aax --output ./my-audiobooks

# Set bitrate
aax convert audiobook.aax --bitrate 192

# Disable chapters
aax convert audiobook.aax --chapters=false

Split by Chapters

# Split into individual chapter files
aax split audiobook.aax

Setup Audible CLI

# Configure Audible CLI and get activation bytes
aax setup-audible

Available Options

Option	Short	Description	Default
--format	-f	Output format (mp3, m4a, m4b)	mp3
--output	-o	Output directory	./converted
--code	-c	Audible activation code	auto-detected
--chapters		Preserve chapter information	true
--bitrate	-b	Audio bitrate in kbps	128
--verbose	-v	Enable verbose logging	false

Examples

Convert to M4B with High Quality

aax convert audiobook.aax --format m4b --bitrate 256 --output ./high-quality

Split and Convert with Custom Options

aax split audiobook.aax --format mp3 --bitrate 192 --output ./chapters

Quick Conversion with Verbose Logging

aax convert audiobook.aax -v

TIP

You can combine multiple options in a single command for more control over the conversion process.

WARNING

Make sure you have sufficient disk space for the converted files, especially when splitting by chapters.