got an iphone about a month ago and i recently found out about vlc4iphone because i been desperate to find an app or make my life easier to watch animes on my iphone (most animes are in mkv...) and since the vlc4iphone app said it supports mkv files i was really happy, so i followed the tutorial and all on how to put them on the iphone and everything went good but when i came to load the file as soon it started it froze, i deleted file and uploaded another episode, still same.
The iPhone can't really handle really big files of the size that most anime today comes in. More than likely it's freezing simply because it can't play back the video fast enough.