On Apr 18, 2010, at 9:00 PM, Conlon Brett wrote: > Anyone know what setting can be ticked to keep the 16:9 anamorphic > ratio so it plays on the computer as 16:9? I was hoping QuickTime > Pro 7 (the only QT Pro I've paid for) would have a tickbox in the > properties window but it doesn't. Any other suggestions? You can use Dumpster. Change the top left value of the track matrix to 64/45 = 1.422222. This will make it play right on a Mac. I don't know if all the hardware out there that plays mp4 will read the aspect ratio metadata. Jan E.