Hi Jan, OK, I think I'm on the right track but need further guidance. I downloaded the Dumpster app from the Apple Quicktime Tools page. I opened my mp4 file and saw a text listing of parameters. I discovered when I click on a parameter it displays tables of values. I tried clicking on: 'trak' - Track 'tkhd' - Track Header matrix (first field) I tried entering "64/45" <enter>; "64/45 = 1.422222" <enter>; "xyz" <enter> and the value keeps returning to 1.0 What next? How do I get it to stick and was I supposed to put the whole "4/45 = 1.422222" or just "64/45"? Cheers, Brett On 19/04/2010, at 5:11 PM, Jan E. Schotsman wrote: > > 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. > > _______________________________________________ > MacDV mailing list > MacDV at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/macdv