[MacDV] MPEG Stream Clip Question

Conlon Brett brettnlis at bigpond.com
Mon Apr 19 15:01:34 PDT 2010


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.
> 
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