i have recently made a chromakey green screen by pinning material to a board.
it works well for shooting - all i have to do is stand in front of the screen and not move - but there is a problem.
the screen is approx 7ft tall and 4ft wide, so, while it contains all of me, it doesn't fill the frame of the camera i am shooting with.
i read that the best way to deal with this is to use garbage matte with premiere elements.
i have attempted to do this to eliminate everything outside the green screen.
the problem is that, when i apply videomerge, the 'green' bit disappears - fine - but where the 'green' bit finished, i have a black border, which ruins everything.
at least two articles i read on the internet suggested garbage matte was the solution to this problem, but the black border round the outside is killing me.
help greatly appreciated.
Unfortunately, this is a shortcoming of Videomerge. It works contrary to the Garbage Matte.
Try using Greenscreen Key or Chroma Key and this should not be an issue. (Unfortunately, if you're on the Mac version of the program, these alternative Key tools are not included with the program.)
Also, I'd recommend you make Adobe aware of this issue. They've been focussing very much on dealing with these kinds of bugs in recent builds of the program.