[Sidefx-houdini-list] pixel aspect ratio 16.9

Rangi Sutton rangi at kanuka.com.au
Sun Nov 18 21:49:13 EST 2007


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?

HTH,
r.




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