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How do you protect an area from getting keyed-out?
Say you have a green screen situation but the actor has a green cactus logo stamped on his t-shirt.
Not good.What is the easiest and fool-proof way to tell Keylight not to touch the cactus but only the green screen around the actor?
It is obvoius that you need some sort of a mask or a mask layer that you need to rotoscope in accordance with the movements of the cactus image, but what settings do you use to tell Keylight that this masked out are is the one thing it should not mess with?
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6 Replies
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You can just duplicate the layer and put a simple mask around the green area. If it’s inside another element like on a t-shirt, it shouldn’t require any roto work– just a rectangular mask should be fine. Then set the blend mode of it to add and if it’s above the keyed layer, it should just look normal.
There may be a setting in keylight, but that seems pretty fool proof to me.
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If you use the “Color Range” plugin along with key light you can actually select a color and tell it not to be removed. This may be more difficult than it sounds depending on the color of the cactus and the color of your screen but its worth a shot.
If all else fails just animate a rough mask around the cactus. Key your other video layer and place the animated layer on top. Their will probably be some color matching that will need to be done.
The second option is rather down and dirty but it should get the job done.
Hope that helps
Kyle Traynor
Post Production Artist
traynor.edit@gmail.com -
Just duplicate the layer, put a mask around the green logo, move it on top.
You may need to motion track or keyframe the position of the mask. but ti doesn’t need to be precise.bogiesan
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Thanks, folks.
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This thread (just a short scroll down from yours) covers this topic quite well.
You obviously posted your question without even attempting to search the forums for an answer.
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Tom, I was looking for a Keylight tip.
Something that will force the plugin not to touch the problematic area at all.
The “Fill The Hole” method works just fine, though.
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