About Prism
A channel-separated video editor and green-screen keyer that runs in your browser.
Most keying tools assume a perfectly lit studio screen. Prism takes a different angle: it splits a clip into its individual R, G, B and alpha channels, then lets you edit each channel over a timeline and remove colors with a hue-aware, multi-sample keyer. The result is real, controllable transparency you can composite over any image or video — and export with your audio, every frame, and true alpha intact.
What makes it different
- Per-channel editing across timeline ranges, not just a single global key.
- Multiple key colors, each with its own tolerance, softness and spill.
- Background compositing with aspect-cover fit, zoom and pan — baked into the export.
- Agent-ready: the whole editor is exposed over the Model Context Protocol so an LLM can operate it.
- Private: no account, per-video access tokens, and automatic cleanup after 24 hours of inactivity.
Who built it
Prism is made by Debajyoti Saikia, a Principal Software Engineer at Microsoft who builds AI-powered products — from language learning and autonomous agents to creative tools. You can see more work at deb0.com, GitHub, LinkedIn, and the blog.
Get in touch
Questions, feedback, or a bug? You can get in touch via the contact form on deb0.com.