How do you do it? You used to be able to select "movie properties" in the previous QuickTime 7 but that option is not available in QuickTime X in Snow Leopard Say, you have an HD movie which is on your hard drive, but in 4:3 format. You want to change it to 16:9 which is the widescreen format, to view the movie at its proper aspect ratio. You can do this in VLC, but my question is, HOW DO YOU CHANGE THE ASPECT RATIO IN QUICKTIME PLAYER X?????