I haven't seen any 15-17 hour films unless you want to consider the entire extended Lord of the Rings trilogy or 6 chapters of Star Wars series a single movie, which they obviously aren't.
MGS games have become primarily vehicles for telling a story, developing characters and expanding a universe, much like a movie series, but the pacing is like a video game. Action sequences take place in real time as you play them, there are no cuts and no edits for length.
I will say that there does seem to be more watching than playing in MGS4, but all cinematics and codec sequences can be skipped if they offend anyone's game playing sensitivities for not being interactive enough.
Face it; the vast majority of all game cinematics are not. The Half Life 2 series is about the only one I can think of offhand where "cut scenes" (dialog plot explaining breaks in action) leave complete control of the character to the player, and that's mainly because the game does not break the 1st person perspective for the duration of the series.
What the cinematics in games allow for are the same cuts, edits, angles, etc. that have been used in story telling via fim for years. I really don't need nor want token interaction during plot sequences to remind me that I'm still playing an interactive game.







