I have 10, 100mb video files that i converted from .avi to .mov with ffmpegX. The files size stayed the same give or take a couple megabytes after the conversion. I put these ten files into iMovie witch should equal around 1gb. 100mb x 10=1000mb. But after i saved the iMovie and looked at it's file size it said the poject was 22gb!!! Also when i put one of the files in iDVD which should be around 100mb out of 4gb of space...the one video file took up a gb of space. Does anyone know whats going on here?