I am using an apple computer. I exported this video using the highest settings from imovie. Then using MPEG Clipstream (first impressions are very good) to mpeg4. Now I am uploading it again. I hope the quality is better. There seems to be too much compression used during transfer to the server. If you use this, the standard setting is 12frames per minute. Crank it up to 30. It is slow. My 40 second video took over 5 minutes to convert. But the result is great.