Professor Scott Straub LLC 4 years ago I use Imovie to edit my movies, and videos of about 40 minutes are nearly 200mb! I've played with settings and am able to get it down a little smaller, but my files are very large (I think)?? Even when I split them into two parts the video files are often between 80-100 mb. Any thoughts? I'm rendering them into mp4 h.264 640-480 Am I doing something wrong? Are those video sizes too large or does it matter as it's streaming?