All, I have been having trouble with my IMovie files. I have a Sony AVCHD Camera and an iMac with an intel Core processor and 4GB of RAM. When I watch the 'raw' unedited AVCHD files by uploading them to my PS3, they look great, perfect actually. However, watching unedited footage is not really a good idea, so I import the movies in to I Movie and perform the edits I need. However, when I export the movies to .MP4 (the PS3 does not play .MOV files), the motion does not look natural, panning shots are juddering and the motion of say a rugby ball in the air is very 'processed' it looks like there is 2 of them ! It's as if all motion is not smooth any more, the whole thing looks very 'processed' and staggered. The imovie export files are set as: MPEG-4 Dimension: 640 x 360 Codec : H.264 This is the 'large Movie' option from Imovie. The original AVCHD files are 1080i high def. I have Quick Time Pro, and so am not restricted to the output formats available by default in iMovie. These files were made by just selecting 'large movie' and not using the QT Pro. Can anyone suggest what setting I should be using to make the edited files look just as good as the original source ? Will upgrading to Final Cut Express help ? Would using a Mac Mini instead of the PS3 and playing .MOV files help ? Any suggestions will be gratefully received.