I am currently running MPEG Streamclip to chop my files up and convert them into smaller movie files for use in iMovie. The movies I am using are home football videos and the quality isn't great to begin with, so I am trying to retain as much of it as possible. I ripped them off a DVD into mpeg4 format and I am currently slicing and dicing them, then exporting them into Quicktime format. Now when you export clips, you have the option of selecting a movie format resolution (640 x 480, 720x480 PAL, NTSC, etc) and quality percentage. Now, obviously the larger you set the quality scale the better (and larger) the video, but... In which of those resolutions will I Get the best bang for my buck (size, quality, etc)?? I plan on ultimately making a movie and putting it onto a DVD...it needs to be as professional as possible. Hopefully you all have followed this!