I'm learning Premiere and wanted to learn how to layer some videos on top of each other, but particularly how to have one of those layers be a chroma-keyed green screen video. Specifically, I wanted to come up with a learning scenario where one of the video layers had to appear to go behind elements from the other video layer - as if walking behind an object, or inside of a building window, etc, where parts need to be masked away in order to achieve the proper layering effect.
So, I combined two things I knew of off the top of my head - the green screen Shia LeBeouf "you can do it" video, and a scene I recorded from Counter-Strike, the game. In the scene, there is a balcony window and I want Shia LeBeouf to be inside the window and properly masking / clipping behind the building parts.
My approach that I tried is to place the underlying video scene on Video layer 1, and the Shia video scene on Video layer 2. Then, I placed a rectangle Shape on Video layer 3. I added a Track Matte Key fx to the Shia LeBeouf Video layer 2, and set the matte setting to the Shape on Video 3.
This gets the layering / mask effect working great, but my problem is the following ...
My Shia LeBeouf layer is scaled a bit to "fit him in the window" of scene 1. When I resize or adjust my shape dimensions, it seems to doubly scale the Track Matte Key fx effect.
I really have no clue how to word this, as this is like the third video I've made in Premiere. Perhaps the below video clip can be of some help.