What It Does
CorridorKey for Green Screens is a free plugin implementation of the open-source CorridorKey project by Corridor Digital. It uses AI-driven depth estimation to separate subjects from green screen footage, working directly inside Premiere Pro, After Effects, DaVinci Resolve, and Nuke. The underlying model generates high-quality depth maps from any footage, which the plugin uses to produce clean mattes without manual rotoscoping or complex keyer adjustments.
Key Features
Tiling Mode. Processes footage in 256x256 tiles, which increases effective resolution while keeping memory usage low. Useful when working with high-resolution footage where a standard approach would run into GPU memory limits.
Auto Crop. Automatically crops processing around the mask bounding box, skipping transparent areas that would otherwise waste compute time. Enabled by default.
QuickMatte input. Accepts a custom alpha hint as an optional parameter, letting you feed in a rough matte to guide the AI toward better results on tricky shots.
Cross-application compatibility. The same plugin works in Premiere Pro (2020 through 2026), After Effects, DaVinci Resolve, and Nuke, so you can use it regardless of which application is in your pipeline.
Recent updates have brought significant performance improvements, with version 1.2.9 specifically calling out faster processing speeds.
Who It’s For
Editors and compositors who need green screen keying without purchasing a dedicated tool. It’s particularly practical for smaller productions or solo editors who work with green screen footage occasionally and don’t want to invest in a full-featured keyer. The cross-app support also makes it a low-friction addition to mixed pipelines.
Pricing
CorridorKey for Green Screens is completely free. No subscription, no trial period, no paid tier.