So I have some blue screen footage that I'm working on keying out. One of the shots has a gentleman wearing a shiny vest, which is reflecting some blue. There are holes in my matte that are too much for Alpha Cleaner to fix. I thought maybe I could paint white only on the alpha channel. The only problem is, my layer has some time remapping. So I went through my whole clips painting white on his vest, only to find out when I came back into my comp, the paint doesn't stay lined up due to the time remapping. Any thoughts on how I can paint on a layer that is time remapped?
BTW, if you're using Keylight, you can you its Inside Mask property which allows you to link a mask on the same layer which will act as a Holdout Matte. More often than not, it's much easier and faster to use masks to create a Holdout Matte.
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I have been getting better results in the hair with Primatte, so no, i haven't had a chance to use the inside mask, But I have been making a duplicate layer with a mask applied the the trouble area (normally the chest of my talent) and have been placing that underneath to fill the holes. These holes are norally shiny sequins on the talents wardrobe, and are reflecting blue. I just use spill killer afterwards to take away the blue.
My main issue is wanting to learn how to better use the paint tool to apply alpha. But how am I able to do that with a time remapped layer. Is there no way to paint on a pre comp?