I too ended up with giant files for movies. The best solution for me was to use Windows Movie Maker in Windows XP. Just load the movie in the program, edit as you see fit (opening scenes, introduction, etc..) then save the file and select a smaller (custom) size. As you select the smaller size, it will show the total file size before you hit OK. Reduced my 30 Mb file to about 4Mb and still looks good. Now I can share with the world wide web audience.