montreal-forced-align-polygot/MFA-python

Montreal Forced Aligner – Python API Implementation

This project provides a Python-based API implementation of the Montreal Forced Aligner (MFA). The system uses FastAPI to build a simple and efficient API layer that exposes Montreal Forced Aligner functionality through HTTP endpoints.

The goal of this repository is to provide a clean API-based system for performing speech-to-text forced alignment using Montreal Forced Aligner.

Instead of running MFA through command-line scripts, this implementation wraps the alignment process inside a FastAPI service, allowing users to interact with the aligner through HTTP API requests. This makes it easy to integrate forced alignment into applications, automation pipelines, research workflows, or backend services.

Since Montreal Forced Aligner itself is implemented in Python, this version runs the aligner directly within the Python environment, making it straightforward to deploy and modify.

The API endpoints and behavior are designed to match the same structure used in the other implementations, allowing users to switch between different aligner backends without changing their client-side code.

Key Features

• —Python backend using FastAPI
• —Direct integration with Montreal Forced Aligner
• —API-driven workflow for easy integration with other applications or services
• —Consistent API structure with other aligner implementations
• —Designed to run easily in Hugging Face Spaces using Docker

Open Usage

The code in this repository is completely free to use. There are no restrictions on using this code and forking it.

You are free to:

• —Fork the repository
• —Copy the code directly
• —Modify or extend it
• —Create your own Hugging Face Space
• —Build your own backend service using this implementation

This project aims to make it easier for developers and researchers to deploy and experiment with Montreal Forced Aligner using modern API-based systems, without needing to manually manage alignment scripts.