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Dang! Imported .png with reversed alpha

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Bill NelsonDang! Imported .png with reversed alpha
by on Aug 25, 2011 at 4:59:29 pm

need a bit of the bovine wisdom here. Motion 4 on 10.5.8. for whatever reason, SOME .png files will not import correctly into Motion, whether thru 'Import' or finder... alphas are reversed. Other layers in the SAME Photoshop file will come in perfectly. Tried rasterizing the problem layer, no joy.

In desperation, I tried putting a simple shape on another layer below and exporting both layers as .png. It imported perfectly. What the?!!@?

Tried shutting everything down, etc. What am I missing?



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Stephen SmithRe: Dang! Imported .png with reversed alpha
by on Aug 25, 2011 at 5:19:36 pm

Make sure they are 8-bit and CMYK.

Stephen Smith
Utah Video Productions

Check out my Motion Training DVD

Check out my Motion Tutorials


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Bill NelsonRe: Dang! Imported .png with reversed alpha
by on Aug 25, 2011 at 5:59:18 pm

Hi Steve:

Thanks for your attention to this! I'm on 8-bit. Changing the Photoshop file to CMYK precludes exporting in the .png format, which is what I've been doing successfully for many years. I remember something funky happening a couple times with .png export before, but it's been too long! I can't recall how that was resolved. Frustrating!



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Mark SpencerRe: Dang! Imported .png with reversed alpha
by on Aug 25, 2011 at 6:14:15 pm

Needs to be RGB, not CMYK

--
Mark Spencer
Freelance Producer/Editor/Motion Graphics Artist
Apple-certified Master Trainer
Author, Motion 4 from Peachpit Press
http://www.applemotion.net


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Bill NelsonRe: Dang! Imported .png with reversed alpha
by on Aug 25, 2011 at 6:17:47 pm

absolutely. Here's a wonky workaround I'm having to use today. I created a bottom layer in Photoshop with only a few pixels of a white rectangle I created showing in the lower right corner, easy to crop in Motion. They all import without fuss now.

Go figure.



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