how to make a green screen scene black and white

Question

Dearest Adobe Community,I am attepting to green screne a part of a B and W film and cannot figure out how to do it. When I use a lut or desaturate the green screen gets confused with the subject and just looks like a mess, Is there a way to do it without exporting it in color, making it B and W then puttng it back in? The problem is the background is a colored video, I was going for a B and W colored overlay effect. Greatly appricate any help! &#128578;

shooternz · Answer

I would create a sub clip or sub sequence of the scenes...make my CC and Grade and use those in the edit.

Exporting and reimporting is also no big deal.

If you have After Effects you can key the clip on the green screen ....then export it with an alpha channel and use that as your source clip. THat would allow you to cc BG and Overlay clip separately.

I dont think you can export with alpha in PPRO but maybe you can export with an alpha mask only.

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