I've started becoming interested in doing green-screen work with my VV3, and have been trying to find out what the best method is out there. I already have some green-screen footage and have been trying to create a good transparency mask in order to place a new background in. I've read all the help topics about compositing and track parents and all that, and have been able to get the basic idea, but I keep running into two problems:

1. When I make a mask, I can't get some parts (like the actors) to be completely opaque, so when I place the new background in, you can see it through the actors.

2. When I take out the green channel, the white gets taken out too. I've tried messing with the high-ins and outs and all that, but all I've been able to do is get less white to come in. I see in the help topic about color channels that the white is indeed transparent whenever another color is transparent; so I suppose my question comes down to: Is there a way to make it so that just the color I choose is transparent, and not the white?

Any help on these two problems, or on another method of doing this type of compositing, would be very welcome. Thank you.

Nhik Rath