EZ-CORRIDORKEY

Free forever · Built by Ed Zisk of EZSCAPE

A full desktop app for CorridorKey, the AI chroma keyer by Corridor Digital. Hair, motion blur, and translucency survive the key.

No Python, no command line. Import a clip, generate an alpha hint, run inference, export production-ready mattes.

Download for WindowsmacOS App Store reviewView on GitHub
01

HOW THIS CAME TO BE

In February 2026, Niko Pueringer of Corridor Digital released CorridorKey, a chroma keyer that unmixes foreground from background instead of thresholding green pixels. The results were impressive and, best of all, the tool was free for everyone. The catch: it was a command line Python script that wanted a 24 GB GPU.

EZ-CorridorKey was born out of necessity. Seeing the model's potential, Ed built a GUI around it so anyone could use the underlying technology without touching a terminal. With the help of community members, the VRAM requirement dropped below 8 GB, enabling quality keying on ordinary hardware.

Months of iteration made EZ-CorridorKey the #1 CorridorKey fork on GitHub. Then Corridor noticed: Niko reached out, and his feature requests started landing in updates. EZ-CK remains free, in the same spirit as the original release.

WatchCorridor Digital's announcementThe original video where Corridor unveiled the AI keyer and the research behind it.YouTube Upstreamnikopueringer/CorridorKeyThe original model and research this project builds on. Go star it.GitHub
02

WHAT'S IN THE BOX

Four alpha generatorsGVM and BiRefNet are fully automatic. MatAnyone2 and VideoMaMa give you paint-and-track control. A built-in chroma keyer and SAM2 tracking round out the hint toolbox.
CorridorKey refinerThe neural unmixer sits downstream of whichever model you pick and cleans up the alpha. Green and blue screens, with automatic detection of which one you shot.
Real-time dual viewerSource on the left, alpha or composite on the right. A/B wipe, pan and zoom, channel switching, and live despill, refine, and despeckle sliders.
Job queueStack clips in a queue and let them process back to back. Live progress, sound cues, recent projects, and session save so you can quit and come back.
Production exportsEXR sequences (DWAB, PIZ, ZIP), PNG sequences, ProRes 4444, and VP9 with alpha. Bit depth preserved end to end, ready for your NLE or compositor.
Runs locallyYour footage never leaves your machine. No accounts, no telemetry, no cloud. 8 GB of VRAM covers most clips on an NVIDIA card.
03

SEE IT WORK

Full walkthrough from install to final export.

04

LATEST RELEASES

2.1.0up nextIn progress

Heads up for Mac users: starting with 2.1.0 the Python app ships for Windows and Linux only. macOS moves to a fully native Mac app, currently going through App Store review.

  • UI translated into 15 languages, picked in Preferences
  • Built-in MLX engine for Apple Silicon, roughly 2x faster inference
  • Apple Vision foreground hint on macOS 14+, no painting needed
  • Batch pipeline processes an entire folder of clips autonomously
  • Tandem pan and zoom keeps both viewers locked to the same region
  • Installer, updater, and HDR extraction fixes across the board
2.0.0May 7, 2026Shipped
  • Blue screen keying with automatic green vs blue detection
  • Chroma key holdout mask: paint strokes that force regions opaque or transparent
  • Drag-sampling eyedropper averages screen tones for cleaner keys
  • VideoMaMa mask import for pre-made alpha masks
  • Garbage matte cleanup removes edge-of-frame artifacts after inference
  • One-click first launch: a fresh download installs itself

Every change, in detail: full changelog on GitHub

05

GET IT

FreeWINDOWS

Full installer and portable exe on Gumroad. Free, donations welcome. Handles Python, CUDA, and model downloads for you.

Download installer
App Store reviewMACOS

A fully native Mac app is on its way to the App Store. Until it clears review, EZ-CorridorKey 2.0.0 for macOS stays available on Gumroad. Subscribe on YouTube for the release.

Get notified
SourceLINUX

Clone the repo and run the install script. One command sets up the environment, the models, and the app.

Get the source
06

ABOUT THE CREATOR

EZ-CorridorKey is built by Ed Zisk, the creator behind EZSCAPE, a workshop for creative tools like Ditheron, CRTified and upcoming audio plugins.

The app is free forever, released under CC BY-NC-SA 4.0. If you build upon the UI, kindly link to EZSCAPE and credit Ed Zisk. Logo by Sara Ann Stewart.

If EZ-CorridorKey saves you a roto session, your support via an EZSCAPE purchase, Patreon subscription or Ko-fi tip jar is how the project stays funded.