Mailing List AE-List@media-motion.tv ? Message #63192
From: Peter Matulavich <AE-List@media-motion.tv>
Subject: Re: Animating Brush Stroke
Date: Mon, 2 Oct 2017 19:32:48 -0400
To: After Effects Mail List <AE-List@media-motion.tv>
Thanks, Roei,  I think you're right.   Using Trim Path to reveal stroke effects is probably the way to go.  I think  on my current project I will stick with Paint since I've already put quite a bit of time into doing it this way.  I'll just have to be sure to draw all the paint strokes at a consistent speed.   it's good to know I wasn't missing something obvious.

And thanks to everyone else for their input.

Pete



On Oct 2, 2017, at 6:00 PM, "After Effects Mail List" <AE-List@media-motion.tv> wrote:

Peter, you are Right.

as you record your stroke with the brush tool, no matter which duration you
choose: Constant, Write On, or Single Frame, it will record the timing you
used initially and it will be embedded in the layer without a way to change
it other then stretching or expanding it as a whole.

I suspect this is a feature and not a bug because the recording has to be
embedded inside the the layer in a way that is not revealed by keyframes,
because
as opposite to other recording methods such as motion sketch or puppet pin
recording, it does not create rove across time keyframes, but simple 2
linear keyframes.
if you use the start or end parameters with linear keyframes, they will
still be in the same timing fashion you recorded the stroke with. opening
CS6 exhibits the same behavior so this feature was consistent in the last 5
years... so this supports my guess this is a feature not a bug.

my advice to you is leave the stroke you painted as revealed, copy the path
from the path parameter under the the collapsed brush parameter, and paste
it into a shape layer path and use a stroke width and trim path to reveal
as the alpha matte for the brush stroke. either that or paste the path on a
mask path and use the stroke effect. if you use a mask path you can also do
this on the same layer.

 
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