I want to video someone on a green screen live. I want a pre-determined movie that plays in the background to replace the green and project the live video and background on a projector screen using Ulead VideoStudio 11. How do I do this?....Basically, like a weatherman does.
You can do what you described with VS11, it's called Chroma Keying. I haven't done it personally, but here's a link to the process on VideoStudio 10 Plus, should be pretty much the same for other versions of VS.