I am using iMovie for the first time and its a lot of fun. I noticed however that the size of my movie file after 1 minutes worth of movie and sound is at about 670 MB. I was curious if there is a way or format to make the movies a smaller size. I want to make my video about 2 and a half minutes but have it only be 50 or 60 megabites, something that I have seen before with football highlight videos. Can I do this?