Dunno how it is with vegas, but im pretty sure the file type wont do much to it but just in case, try AVI. Anyways, when I used premiere and exported, the vids came out looking like crap and I started toggling with the different video codecs that were built into my computer. One of them gave me the same quality that I had the videos in with a few interlacing problems but Ill take care of that later. Anyways, what im saying is try working with the video codecs it gives you. Ill research it sometime cuz Im speaking from a premiere user's point of view.
