Making your movie play back without borders is a little simpler than creating a skin. All you need is a solid black image file, at least as large as your movie. And a text file. And your movie.
Why would you want to do this? That’s a good question. Maybe you want to play a movie back while you’re working and screen space is tight. Maybe you’re using a computer for some kind of demo kiosk and you’d like the video playing back as part of your demonstration. Maybe you’re a minimalist. Maybe you don’t want to do this…
To be honest, Murphy stumbled into this Quicktime behavior when developing the screencast for creating a Quicktime skin.
In the screencast you’ll see the text file is the glue that holds the movie and the image file together. To make your production portable you’d have to export it into a self-contained movie.
If you want to take this a little further see the screencast on Quicktime skins.
You can also download the files used in the screencast.