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Alphas out of alignment.

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Bruce HughesAlphas out of alignment.
by on Oct 5, 2009 at 8:31:41 pm

The alpha channels on MOVs i'm exporting from AE are all one pixel off once imported into Avid. You can see the pre-mult color one pixel above my objects. The bottom of my objects are also cut off by one pixel. How could i be importing something where the alpha channel is off?

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Dave LaRondeRe: Alphas out of alignment.
by on Oct 5, 2009 at 9:14:57 pm

Because you're not using the right kind of alpha channel? You're using premultiplied when you need straight, or vice-versa?

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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Bruce HughesRe: Alphas out of alignment.
by on Oct 5, 2009 at 9:38:49 pm

Tried both Straight & Pre-Mult. Same problem.

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Mark WalczakRe: Alphas out of alignment.
by on Oct 6, 2009 at 3:21:03 pm

Just a thought: can this be related to some sort of quirky 3D camera? Perhaps this is a funky artifact of some motion blur done in post? These are both shots in the dark, but can hopefully get you going in the right direction...

What makes you explode?

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