What I Want To Do post:

During BPA I wanted to make a music video for Digital Media. I knew one of the big parts of it would be keying out the green screen. Researching to get a good idea how to do so, I looked at many tutorials. I found out the best way to start out is to create a garbage matte in after effects, which allows you to cut out the areas of the green screen that aren't being used by the actor. Then, in after efffects the best plugin to apply would be keylight 1.2. (This is what also the cancelation of the background.) First you need to select the color you want to key out with the eye dropper tool. Put the view mode in Combined Matte. This allows you to view the transparent areas (black) the semi-transparent areas (gray) and the visible areas (white). Adjust the Screen gain parameter just enough to get the border line of the actor visible. Put the view mode into status. This is basically an enhanced version of combined matte and allows you to see the completely visible, transparent and semi-transparent areas of the footage. You want to take out all the semi-transparent areas. In order to do so under screen matte there is a clip white parameter. Scroll this down to where you can no longer see any gray areas. Put the view back on final result and the actor should be pretty well cut out of the rest of the background. You might notice that the edge of the actor is a little jagged. To fix this you can tweak the clip rollback, screen shrink and screen softness parameters to smoothen the edges. After this the actor should be ready to use in a background of choice.