OpenMontage: The World's First Open-Source, Agentic Video Production System

Purpose and Overview

OpenMontage is the world's first open-source, agentic video production system designed to turn your AI coding assistant into a complete video production studio. Rather than relying on simple image-to-video tricks, the system allows an AI agent to handle live research, scriptwriting, asset generation, timeline composition, and final editing driven entirely by natural language instructions.

The system supports entirely free workflows utilizing open archives and stock footage, as well as advanced pipelines backed by commercial APIs for state-of-the-art video and image generation models. Everything is coordinated through structured pipelines and step-by-step stage director skills.

System Requirements and Environment

To set up and run OpenMontage, the official package documents the following requirements:

- **Python 3.10 or higher**

- **FFmpeg** installed on your system

- **Node.js 18 or higher**

- A compatible AI coding assistant (such as Claude Code, Cursor, Copilot, Windsurf, or Codex)

Documented Installation

The standard installation process involves cloning the repository and running the automated setup command:

git clone https://github.com/calesthio/OpenMontage.git
cd OpenMontage
make setup

If you prefer manual installation on macOS or Linux environments, you can execute the following commands:

python3 -m venv .venv 
source .venv/bin/activate 
python -m pip install -r requirements.txt 
cd remotion-composer 
npm install 
cd .. 
python -m pip install piper-tts 
cp .env.example .env

Usage and Operation

Once setup is complete, open the project in your AI coding assistant and describe your desired video using plain language:

"Make a 60-second animated explainer about how neural networks learn"

The agent will research your topic live on the web, generate visual assets, write and narrate the script with voice direction, assemble word-level synchronized subtitles, and render the final video while running built-in quality self-reviews.

Advantages

- **End-to-End Automation:** Seamlessly bridges the gap from initial concept and research to script, asset generation, and final composition.

- **Flexible Provider Stack:** Supports both cloud-based paid APIs (like fal.ai, ElevenLabs, OpenAI) and completely free local alternatives (such as Piper local TTS and open-source models).

- **Live Web Research:** The agent runs multiple searches across research platforms before drafting scripts to ensure accuracy.

- **Built-In Governance:** Features pre-composition validation, budget controls, and auditable decision logs.

Limitations

- Requires an AI coding assistant capable of reading project files and executing Python code.

- Production costs scale based on the selection of commercial video and image generation APIs.

- Output quality heavily depends on proper provider configuration and prompt context.

Editorial Comparison and Alternatives

Unlike traditional non-linear editors that demand manual timeline manipulation or isolated video generators that output single clips, OpenMontage coordinates entire multi-stage workflows using a scored provider selector.

- **Traditional Editors (Premiere, Resolve):** Offer granular manual control but lack autonomous agent orchestration.

- **Consumer Web Generators:** Provide quick clips without the structural depth of documentary montages, research briefs, and automated multi-track audio mixing.

License and Pricing

- **License:** GNU Affero General Public License v3.0 (AGPLv3).

- **Pricing:** OpenMontage is free and open-source software. Verified commercial pricing is tied entirely to third-party providers configured in your environment; the core framework itself carries no mandatory software license fees.

Official Links

- [Official GitHub Repository](https://github.com/calesthio/OpenMontage)

- [Official Website](https://www.openmontage.video/)

- [Official Provider Guide](https://github.com/calesthio/OpenMontage/blob/main/docs/PROVIDERS.md)