tags breaking video on ipod

I downloaded a couple of mp4 videos and I am trying to add them to my ipod video...if i load them without tags they play fine. when i add tags to them the video freezes half way through. I've been reading that mp4 doesn't support tags, but they do support metadata which needs to be added via trans coding, not sure if this is still true or not

custom tags used are below everything else is using defaults...also i'm using CopyTrans Manager to load the videos onto my ipod

ITUNESMEDIATYPE
TVEPISODEID
TVSEASON
TVEPISODE

any help is appreciated