Hi laliquo and welcome to our community
Seems simple, doesn't it? What you have to keep in mind is
that PowerPoint normally assumes it is the ONLY thing on the
screen. Not only that, but it will adjust for pretty much any
screen resolution being used. So lets say you are recording at full
screen at 1024x768. When you play the movie back, it has to play
back
inside another container. The container is normally either
the Web browser or the Flash Player. And that simple fact alone
means that you don't really have the full screen available. This is
because elements of the container are consuming part of your screen
real estate. For example, if it's the browser, you have the title
bar, toolbars, frame outline and status bar.
Hopefully this all made sense... Rick