OpenMontage
calesthio/OpenMontage
World's first open-source, agentic video production system.
Overview
OpenMontage is a Python-based tool that transforms an AI coding assistant into a full-fledged video production studio, enabling the creation of real videos from free stock footage and motion clips.
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Install
pip install OpenMontageREADME
OpenMontage
The first open-source, agentic video production system.
Paste A Video · Quick Start · Try These Prompts · Pipelines · How It Works · Providers · Review Guide · Agent Guide
Follow The Build
Turn your AI coding assistant into a full video production studio. Describe what you want in plain language — your agent handles research, scripting, asset generation, editing, and final composition.
Important distinction: OpenMontage can make image-based videos, but it can also make a real video video for free/open-source workflows: the agent builds a corpus from free stock footage and open archives, retrieves actual motion clips, edits them into a timeline, and renders a finished piece. That is not the usual "animate a handful of stills and call it video" trick.
"SIGNAL FROM TOMORROW" — a cinematic sci-fi trailer fully produced through OpenMontage: concept, script, scene plan, Veo-generated motion clips, soundtrack, and Remotion composition.
"THE LAST BANANA" — a 60-second Pixar-style animated short about a lonely banana who finds friendship with a kiwi. 6 Kling v3-generated motion clips (via fal.ai), Google Chirp3-HD narration, royalty-free piano music, TikTok-style word-level captions, and Remotion composition. Total cost: $1.33.
"The Library at Alexandria" — a 70-second history elegy on what humanity lost in a single night. Five hand-authored scenes — an illuminated manuscript page, cascading scroll-tags, a Burning Counter ticking 700,000 → 0 inside a candle's flame, a charred vellum fragment with surviving Greek, and an empty void — set to OpenAI 'ash' narration and a free Pixabay strings score. Total cost: $0.02. Built through OpenMontage's atelier (bespoke) composition mode — every scene crafted from scratch, no shared components.