"Mouse, I don't recall any CGI FMV in Wind Waker. If it's "real time" it's not "pre-rendered." Hello? This is very, very widely misunderstood, and you seem to have fallen into a similar trap. "
No no no- you've got it all wrong. FMV in general refers to cut-scenes that are not rendered by the game at that moment- in other words, graphic artists animated every single frame rather than the programmers telling the game how to put together the scene. FMV is usually CGI, meaning not rendered by the console itself, but that's not always true. Cut-scenes in a game can be animated by graphical artists WITH real-time graphics. You obviously don't understand the terms real-time and pre-rendered. So basically, real-time is the console's own graphical power while pre-rendered means just that- rendered before you play the game and is a video the game just calls up at the right time. Wind Waker did have several real-time pre-rendered cut-scenes.
Also, customizable FMV IS possible, it would just take an insane amount of space. Let's use OoT as an example- in the game, Adult Link can have 3 different kinds of boots, 3 different color tunics, 2 different kinds of swords, and 2 different kinds of shields. That makes 36 possible combinations and 36 different depictions of Link (3 x 3 x 2 x 2 = 36). Theoretically the developer could make 36 different FMV cut-scenes, one for each combination. It would be extremely impractical, though, and would take up an inordinate amount of space just for one scene. It IS possible, though.