Riff Remix Hub - Python API Service

This is the Python microservice for audio stem separation using Demucs AI.

What it does

• Receives audio file URLs via REST API
• Uses Demucs 4.0.1 to separate audio into stems (vocals, drums, bass, guitar, other)
• Returns base64-encoded stem audio files

API Endpoints

• POST /separate - Separate audio into stems
• GET /health - Health check

Deployment

This service is designed to be deployed to Railway as a separate service from the main Node.js frontend.

Environment Variables

• PORT - Port to run the service on (automatically set by Railway)

Local Development

pip install -r requirements.txt
python demucs-api.py