All right, first off, I absolutely hate it when someone jumpshots me, not as bad as getting commando’d, but up there.
In AE, after you capture the video, you and throw it into a composition, what you would create your text, say “jumpshot”. This is above the video. At this point your text is there, you can move it around, but it’s always above the video.
There are a few ways of acomplishing what he did, but what it ammounts to is he masked the text. In jumpshot, he traces the wall, sets a key frame on mask path, if the wall moves up in the shot, he moves the mask. You continue doing this until you have a mask that follows the wall movement completely. Now you just change your mask to invert and when the mask is over the text(ie…the wall) it’s invisible, when it doesn’t cover the text, it’s visible.
For more control-you could also create a solid(layer above text) and apply a mask to to that as you did before. Change your text layer track matte to alpha,(you may have to right-click near “source name” and choose “modes” now you can move text around, independent of the mask you created. If you had moved it around before, you would have to move all the keyframes for wall mask, this way you don’t.
If you really want a leg up on your class, go to Amazon and get “Creating Motion Graphics” from Chris and Trish Meyer (all of their books are excellent)—will give you a great leg up. Good luck in media.
Johnny Cuevas, Editor
http://www.ckandco.net