[Sidefx-houdini-list] pixel aspect ratio 16.9

Mark Elendt mark at sidefx.com
Mon Nov 19 08:09:04 EST 2007


On Monday Nov 19 at 12:49, Rangi Sutton wrote:
> Phil Spicer wrote:
> > Hi,
> >
> > In H9, a PAL 16.9 anamorphic resolution set the pixel aspect ratio as
> > 1.442. In Shake, Photoshop, After Effects etc, it is set at 1.422. Which
> > is the correct one?
> >   
> Testing with a quick bit of maths..
> 
> 720*1.4222 = 1024
> 
> And...
> 
> 1024/576 = 1.77778
> 16/9 = 1.77778
> 
> Therefore 1024:576 = 16:9
> 
> Therefore 1.422 is correct for 720x576.
> 
> I'm guessing that 1.442 is an NTSC thing?

Either that or a typo.  I'll change Houdini's.

You can change $HH/FBres if you can't wait :-)




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