Video Slide Show

Hey check it out. Here is a video slide show I made that will be played through a projector at our trade booth for an upcoming home show here in town. I'm still perfecting my video skills, it's a new thing I've decided to learn. I'm not sure I've got the whole web optimization aspect of it completely down. The non-optimized version isn't pixelated at all, but the YouTube version is. Perhaps there are some web video veterans out there who can give me some tips.