# CorridorKey arrives in Beeble Background Remover

Apr 21, 2026

CorridorKey is now available in Beeble's Background Remover

Now available inside Beeble's Background Remover toolkit, CorridorKey introduces a fundamentally different approach to green screen extraction—one that doesn't just separate foreground from background, but reconstructs what the foreground should have been in the first place.

## From keying to unmixing

Traditional keying methods treat green screen removal as a masking problem. You isolate the subject, refine edges, and hope the result holds up under compositing. CorridorKey approaches it differently.

Instead of producing a binary mask, it solves what's known as the unmixing problem: predicting the true, un-multiplied color of the subject as if the green screen had never influenced it.

Hair retains its softness. Motion blur behaves naturally. Semi-transparent materials hold their integrity. And color contamination from the green screen is actively removed, not just hidden.

## A pipeline built for production

Inside Beeble, CorridorKey is paired with a second model to form a robust, production-ready pipeline:

- MatAnyone + CorridorKey combine to deliver precise alpha generation and high-quality foreground reconstruction.
- Fine details like wispy hair and fast motion are preserved without manual intervention.
- Outputs are immediately usable in professional compositing environments.

## Formats that fit your pipeline

Beeble supports export formats built for VFX and post-production:

- 10-bit RGBA MOV for high-quality compositing.
- RGBA PNG sequences for frame-by-frame workflows.
- Alpha-only outputs for flexible pipeline integration.

Available now on the Beeble web app.