iso movies on psp

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has anyone been fiddling with their psp to see if they can load iso movies on their psp. the reason why im sayin this is that in the umd emulator menu there is section that says disctype : audio/game/audio. so im just wondering if there is way to load an iso movie from here. im just curious thats all. and also im learnin if there is a way to recode and entire full dvd to mp4 for my psp. it came to my attention when i noticed a field in which nero asks u if u want to preserve the menus in the dvd and i check the box, but the menus dont seem to come with the movie. well as of now im just experimentin here. if anyone knows anything about this, let me know