Mailing List AE-List@media-motion.tv ? Message #45502
From: Lachlan Westfall <lachlan@quietearth.net>
Subject: Re: [AE] Aspect Ratios
Date: Tue, 28 Aug 2012 11:28:37 -0700
To: After Effects Mail List <AE-List@media-motion.tv>
Chris,

Ah.... Forgot about the "brute-force" squeeze method. I guess I can now make
any pixel aspect ratio I want.

Thanks.

-L

On 8/28/12 11:10 AM, "Chris Meyer" <chris@crishdesign.com> wrote:

> 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_course/
> 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.
>>
>> The are saying that the specs aren't right (i.e. It's not loading), but they
>> won't tell me what's wrong.
>>
>> I think it may have to do with pixel aspect ratios.
>>
>> When I inspect my stuff in QT is says:
>>       720 x 486, actual size 872 x 486
>>
>> When I look at their previous stuff is says:
>>       720 x486, actual size 864 x 486
>>
>> 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?
>>
>> 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.
>>
>> Help!!
>>
>> -Lachlan Westfall
>> Quiet Earth Design
>>
>>
>>
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>
>
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