FAQs

It separates a subject from green or blue screen footage. For every pixel, including the barely-there ones in hair, motion blur, and out-of-focus edges, it predicts the true un-multiplied color of the foreground and a clean linear alpha, as if the screen was never there. You get standard passes ready for your comp.

A chroma keyer selects a color range and makes you fight the core against the edges, usually with garbage mattes on top. Key Studio Pro does not select anything. A neural network reconstructs what each pixel would look like without the screen, so mixed edge pixels come back as foreground color plus partial alpha instead of a compromise.

AI roto outputs a binary mask: every pixel is in or out. That destroys exactly the pixels that sell a composite, the half-transparent ones in hair and blur. Key Studio Pro outputs a linear alpha with real intermediate values, and it reconstructs the foreground color underneath them.

Four passes per shot: Matte (linear alpha EXR), FG (straight un-multiplied foreground EXR), Processed (premultiplied linear RGBA EXR you can drop straight into a timeline), and Comp (a PNG preview over a checkerboard). You can also export ProRes 4444 with a real alpha channel.

An Apple Silicon Mac, M1 or later, on macOS 15 or later. Nothing else. No Python, no NVIDIA card, no plugins. The download is small, and there is no setup: the app opens straight into the library. The first time you key something it fetches its models once, about 455 MB, verifies them against a checksum, and never asks again.

Yes. No price, no account, no licence key, no trial that expires. The CorridorKey model is released under a licence that forbids selling it, and this app is released under that same licence. You can use the output in commercial work.

CorridorKey is the work of Niko Pueringer of Corridor Digital, who built and trained the model and published it at github.com/nikopueringer/CorridorKey. Key Studio Pro fetches those weights once from the author’s release and runs them natively on Apple Silicon. It is an independent app, not affiliated with or endorsed by Corridor Digital.

Yes. There are dedicated checkpoints for green and blue plates, and the despill removes spill from whichever color you shot against.

sRGB or Rec.709 gamut, in either sRGB or linear gamma. It reads common video formats and image sequences, including 16 and 32 bit linear EXR, and scales inference to handle 4K plates.

No. Every frame is keyed on your own Mac. Nothing is uploaded, there is no account, no cloud tier, and no per-frame cost, so client footage under NDA stays on the machine. The only network request the app ever makes is the one-time model fetch.

It depends on your Mac and the plate resolution, and honest numbers vary too much to print one here. The batch queue exists for exactly this: drop a folder of shots, let it run, and check the Comp previews when it is done.