ID3Extract Plugin for beets

A beets plugin that maps arbitrary ID3 tags to beets custom fields. This plugin is particularly useful for preserving custom ID3 tags during your music library management with beets.

Use Cases

• Extract Spotify track IDs from WOAS (Work Of Art Source) ID3 tags
• Preserve custom ID3 tags in your beets database
• Synchronize ID3 tags with beets fields during import and write operations

Installation

Using pip (recommended)

pip install beets-id3extract

Manual Installation

1. Clone this repository or copy id3extract.py to your beets plugin directory:

cp id3extract.py ~/.config/beets/beetsplug/

2. Enable the plugin in your beets config file (config.yaml):

plugins:
    - id3extract

Configuration

Configure the plugin by adding an id3extract section to your config.yaml. Define mappings between ID3 tags and beets fields:

id3extract:
    mappings:
        WOAS: track_id      # Maps WOAS ID3 tag to track_id field
        CUSTOM: custom_field # Maps any custom ID3 tag to a beets field

Each mapping consists of:

• Key: The ID3 tag name (e.g., 'WOAS')
• Value: The beets field to store the tag value in

Special Features

Spotify ID Extraction

When mapping the WOAS tag, if the value is a Spotify track URL, the plugin automatically extracts just the Spotify ID:

WOAS: "https://open.spotify.com/track/2BOUrjXoRIo2YHVAyZyXVX"
↓
track_id: "2BOUrjXoRIo2YHVAyZyXVX"

Operation

The plugin operates at three key points:

1. During Import (both singleton and album imports):

   • Reads configured ID3 tags from the audio files
   • Stores their values in the specified beets fields
   • Handles special cases like Spotify URL extraction

2. During Write Operations:

   • When beets writes tags to files
   • Ensures custom fields are written back to their corresponding ID3 tags

3. Database Storage:

   • All mapped values are stored in the beets database
   • Preserved across library operations

Debugging

Run beets with the verbose flag to see detailed logging:

beet -v import path/to/music

This will show:

• Which tags are found/not found
• Values being extracted
• Spotify ID extraction (when applicable)
• Write operations

Requirements

• beets 1.6.0 or later
• mediafile
• mutagen (for ID3 tag handling)

Development

To set up a development environment:

git clone https://github.com/your-username/beets-id3extract.git
cd beets-id3extract
pip install -e .

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

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