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Subject: Re: [AE] Aspect Ratios
From: Chris Meyer <chris@crishdesign.com>
In-Reply-To: <list-4828045@media-motion.tv>
Date: Tue, 28 Aug 2012 12:10:07 -0600
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Message-Id: <EC793060-E823-4AE5-B473-F50DC5C45F31@crishdesign.com>
References: <list-4828045@media-motion.tv>
To: "After Effects Mail List" <AE-List@media-motion.tv>

Sounds like you're talking about anamorphic HD? The "new" (actually, the =
old correct) PAR is 40/33.

Making the issue even more confusing, is that in addition to the correct =
pixel stretch, there are additional "unused" pixels beyond the Clean =
Aperture (the actual image used) to form the Production Aperture (a =
wider size used as slop to accommodate  shortcomings in pixel =
processing).

If you need to use the old size, you can always create a square pixel =
comp the size you want, and manually scale it in the Output Module.

But really - all the hardware out there actually uses and has used the =
"new" (old correct) spec; people just prepared things wrong for years. =
Do things the right way now - 872x286 square, squeezed to 720x486 on =
output, and life will be good.

=
http://provideocoalition.com/index.php/cmg_keyframes/story/par_for_the_cou=
rse/P2/

 - Chris


On Aug 28, 2012, at 11:12 AM, Lachlan Westfall wrote:

> I'm sending stuff to a client for display on a stadium video board.
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> The are saying that the specs aren't right (i.e. It's not loading), =
but they
> won't tell me what's wrong.
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> I think it may have to do with pixel aspect ratios.
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> When I inspect my stuff in QT is says:
>       720 x 486, actual size 872 x 486
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> When I look at their previous stuff is says:
>       720 x486, actual size 864 x 486
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> My understanding is that the aspect ratio of 1:1.2 was "corrected" to =
1:1.21
> a while back and this caused the difference. Is this right?
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> If so, is there any way I can render something out of AE CS5.5 that =
has the
> old 864 x 486 specs? There is no pull-down for a 1:1.2 aspect ratio.
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> Help!!
>=20
> -Lachlan Westfall
> Quiet Earth Design
>=20
>=20
>=20
> +---End of message---+
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