ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

Paint - Alpha Turning Black

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Alex KuzelickiPaint - Alpha Turning Black
by on Mar 26, 2013 at 2:21:38 am

Hi,

Have a weird problem: I used Paint to paint out 'stuff I don't want' on some video. I've done this a hundred times, setting it to Alpha and with the Brush set to Black, I just paint out - no problem.

But today, I open my After Effects project and find all my paint strokes have turned black, and I can't understand why.

Looking at all the individual paint strokes inside the Paint effect itself, they are all still set to Alpha.

Strange and annoying, as there is hours and hours of work there. Would love some advice if anyone has an idea what's going on.

Thanks in advance,

ALEX


Return to posts index

Darby EdelenRe: Paint - Alpha Turning Black
by on Mar 26, 2013 at 3:41:17 am

So when you view the alpha (alt/opt-4) is it showing those painted areas as black (transparent) or white (opaque)?

Is your transparency grid turned off in the comp viewer?

Darby Edelen


Return to posts index

Alex KuzelickiRe: Paint - Alpha Turning Black
by on Mar 26, 2013 at 5:16:32 am

Hey Darby,

Thanks for your quick reply.

I think I've found the problem, however = ME!

Paint was actually working okay, it's just that I was painting out 'greenscreen gunk' on a Comp that contained both the keyed footage and its background together.

I must've been daydreaming as I should have been working on just the keyed layer itself. The 'black paint' wasn't a brush colour at all - it was just the Comp Background colour (coincidentally black) showing through my transparent brush strokes!

I feel a bit silly... but thought I should own up, haha.

Thanks again though. Appreciated,

ALEX



Return to posts index


Roland R. KahlenbergRe: Paint - Alpha Turning Black
by on Mar 26, 2013 at 6:01:31 am

You can change the image channels where your brush stroke occurs by diving into the Timeline's Effect>Paint>Brush # parameters. The Channels drop-down menu allows you to make any related changes accordingly?

HTH
RoRK

Intensive mocha & AE Training in Singapore and Other Dangerous Locations

Imagineer Systems (mocha) Certified Instructor
& Adobe After Effects ACE/ACI (version 7)


Return to posts index

Alex KuzelickiRe: Paint - Alpha Turning Black
by on Mar 26, 2013 at 11:56:31 am

Thanks Roland.

All sorted now.

Cheers,

ALEX



Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]