Luma Matte Question
by Phil LeBeau on Aug 4, 2010 at 6:21:06 pm
I am trying to add a crinkled paper effect to a drawing of a dog. I have the crinkled paper moving on the dog. I added a LUMA matte from the dog to the paper. But the entire effect bleeds through. I added a green back ground to show that it is bleeding through.
My goal is to have the crinkled paper animate so that it looks like the dog drawing is moving. I will mask out the dog and paper and place it in live video. But when I do that, I see some of the live video behind the dog. Like the transparency is like 80% How do I get the same effect, but have it solid to where I cant see behind the animated character?
trying to upload pics but for some reason the uploader is not working.
Re: Luma Matte Question by Dave LaRonde on Aug 4, 2010 at 6:32:41 pm
You're using Luma Matte the wrong way. A luma matte is a way to create transparency. The luminance in the luma matte layer determines the transparency -- white is totally opaque, black is totally transparent, and shades of gray create semi-transparency... and you see the result in the layer just below the luma matte.
First, get your paper & drawing animation looking right -- instead of a luma matte, you might think about using one of AE's blending modes. Then nest the comp in a second comp over the video, and mask the nested comp.
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