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Problem with pre rendered alpha channel

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Andrea Herrera
Problem with pre rendered alpha channel
on Nov 4, 2016 at 1:18:06 am

Hi,

I purchased an AE file with exploding colors and in the description says that the clip is "3D Smoke is prerendered with Alpha Channel (Its Transparent, can apply any color in Background)". However, when I open this ae file it is not transparent at all. In fact, the 3D render is a png sequence which contains a black background. I've tried turning on the transparency, using different blending modes, etc but I still can't get rid of this annoying black background. Anyone can help me please?:(


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Krishna Moorthy
Re: Problem with pre rendered alpha channel
on Nov 4, 2016 at 5:27:18 am

Don't know what you are exactly asking for. Try Clicking this icon for toggling between transparency. To identify the icon, I have highlighted it with a red circle in the screenshot below.



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Andrea Herrera
Re: Problem with pre rendered alpha channel
on Nov 4, 2016 at 10:23:12 pm

Thats the first thing I did but It didn't work.


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Dave LaRonde
Re: Problem with pre rendered alpha channel
on Nov 4, 2016 at 5:02:29 pm

Um, how much prior experience do you have with After Effects?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Andrea Herrera
Re: Problem with pre rendered alpha channel
on Nov 4, 2016 at 10:24:11 pm

Hi Dave,
Advanced, I am a motion graphics designer:)


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Dave LaRonde
Re: Problem with pre rendered alpha channel
on Nov 4, 2016 at 11:04:30 pm

Good. I'd try the Extract effect on the clip to get rid of the background; it's easier to fine-tune the look of wispy things like smoke. You may also be able to use the file itself as a matte.

I'd also go back to that web site to see if you simply downloaded the wrong file. Or to see if there's Matte file you can download.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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