Last updated 08-13-2026
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Clapper
Clapper is an open-source AI story visualization tool that turns high-level creative directions into video sequences without a traditional timeline editor. You describe characters, locations, weather, style, and mood, then iterate with an AI assistant instead of cutting raw clips by hand.
Most AI video editors still expect 3D scenes or frame-by-frame exports. Clapper works from narrative abstractions and is building a Director's Mode where you prompt changes in fullscreen while the set assistant updates the scene. The hosted demo lives on Hugging Face at clapper.app, with local installs via Bun on port 3000.
It targets filmmakers, hobbyists, and developers experimenting with AI cinema. The README warns the project is in very early alpha: some buttons break, workflows are incomplete, and the public Hugging Face Space showed a build error during this research run, though the GitHub repo remains active under GPL v3.
Iterate on stories using characters, locations, weather, and style abstractions
Public demo hosted on Hugging Face at clapper.app
Local install runs on localhost port 3000 with Bun and Node 20.17.0
GPL v3 license with open roadmap and Discord community support
Director's Mode planned for fullscreen AI-assisted prompting
Swappable model stack for images, voices, and script generation
Fully open source under GPL v3 with local and hosted demo options.
Unique story-first workflow focused on characters, locations, and style rather than clips.
Active Discord community and public GitHub roadmap for contributors.
Very early alpha with broken workflows and unfinished UI per the README.
Hosted Hugging Face Space returned a build error during this enrichment run.
Requires Bun and Node 20.17.0 for local setup, which adds install friction.
What is Clapper?
Clapper is an open-source AI story visualization tool and video synthesizer. It lets you build scenes by editing narrative elements like characters and locations instead of traditional video timelines.
Is Clapper free?
Yes. Clapper is free and open source under GPL v3. You can self-host from GitHub or try the public Hugging Face demo at clapper.app.
How do I run Clapper locally?
Clone the GitHub repo, install Bun, run `bun i`, then `bun run dev`. Clapper serves the app on localhost port 3000 after an initial compile.
Is Clapper production ready?
No. Clapper's README calls the project very early alpha with broken workflows, missing tutorials, and incomplete UI features.
Where is Clapper hosted online?
Clapper publishes a public instance on Hugging Face linked from clapper.app. During research the Space showed a Docker build error while the GitHub repo stayed active.
Who maintains Clapper?
Clapper is maintained by Julian Bilcke's open-source community on GitHub and Discord, with a public roadmap and contributor bounties listed in the repository.