Nero 6 problem <-- newbie

It’s my first time using nero 6 in my newly installed DVD burner. I imported an avi file format at 600 Mb into nero (“ninja scroll” baby). Nero switched it up or something, I don’t know, and said the file was going to be about 4.35 Gb of space in the DVD disc. Cool. So i made some chapters and went on to burning — but now im stuck at the screen where it says “creating menus and transcoding screens”. Time elapsed is 1hr 40min and still zero progress. What’s going on??