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keying Red background
Have a clip with a fairly dark red chroma background. There are two talent pulling a rope that goes off screen. there is plenty of red in their faces and legs (wearing shorts).
Not getting great keys with Keylight or Primatte. Any suggestions for getting a better key with red-screen backgrounds?
I recall reading in the Ultimatte manual long ago that red was sometimes used for tabletop shoots…but with talent we are getting red areas that won’t key nice.
thoughts?
Rich Rubasch
Tilt Media -
3 Replies
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My best advice to you would be to start working on some extreme garbage masking, and to separate the shot using masks in order to run multiple passes in Keylight/Primatte.
Perhaps before you pull the key, create a rough mask around the actors and do some color balance to remove some of the red on their faces and clothes. Obviously don’t go so far as to remove the red from the background, but just reduce as much as you reasonably can on the actors themselves. Pre-comp that and then start the garbage masking and plate separation with several passes of Keylight/Primatte.
Hope that helped!
-Grant Swanson
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I was once given footage shot on red because the agency art director insisted the talent wear a blue and green checkered shirt (what a great idea!) Keylight gave us very clean keys of the actors body, but the face and arms obviously had their issues so we roto’ed those portions. Unfortunately you’re never going to pull a clean key of skin shot against red for the reasons mentioned above, so if re-shooting is not an option I’d prepare to do some roto work. Good luck.
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It’ll never work. Reshoot.
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