Adobe After Effects Expressions Forum
Altering keyframe frame rate...
Altering keyframe frame rate...
by Nico Jones on Oct 11, 2010 at 12:13:36 pm

Hi all,

I have a character animation going on in AE. The character is made up of lots of layers, some having different blending modes which react in different ways to various glowing objects beneath the character.

What I want to do is create a slightly jerky, stop-motion look to the character alone, leaving everything else normal.

Usually I'd just precomp the entire character and apply posterize time. However, taking that approach in this case messes up all the blending modes. Also, there are particular layers, shine gobos etc that rely on some of the character layers being 'not-precomped'.

So assuming precomping is not an option - is there a way to get this effect (posterizing time to, say, 12 fps) via an expression used on the various keyframes? Or another approach I can try? The effect would have to be applied to multiple layers...

Thanks,

Nico


Re: Altering keyframe frame rate...
by Kevin Camp on Oct 11, 2010 at 3:41:55 pm

an expression like this to all the properties that needed to be posterized should work.

posterizeTime(5); // value is in fps, like the posterize time effect
valueAtTime(time)


Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


Re: Altering keyframe frame rate...
by Nico Jones on Oct 13, 2010 at 8:24:42 am

That's perfect, thanks Kevin!

Nico J BB





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