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Subject: Mesh Warp Not Smooth
From: Peter Matulavich <matulavich@ameritech.net>
In-Reply-To: <list-4964580@media-motion.tv>
Date: Wed, 6 Feb 2013 06:57:31 -0500
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References: <list-4964580@media-motion.tv>
To: After Effects Mail List <AE-List@media-motion.tv>

I've tried doing some distortions with Mesh Warp and find that the =
movement is always a bit herky-jerky no matter how careful I am in =
moving points of the mesh grid.  Anyone know if there are any tricks to =
doing this?  I find that it works better using smaller images with =
large, simple shapes, but even then what looks smooth at first glance =
really isn't when when I do a frame by frame, up-close examination -- =
small parts of an image will suddenly leap ahead a few pixels when it =
should be moving at a steady one or two pixels a frame.  Im beginning to =
think this effect just isn't capable of doing good tweening.  What I'm =
trying to do is create an animated sequence of clouds circling the =
earth, using a NASA image shot from space.  I'm moving each point of the =
mesh grid a little at a time and keyframing every 2 seconds or so, and =
it seems to start out o.k., but quickly gets jerky.  It is definitely =
not just a playback issue, it's baked into the render.  By the way, it =
works fine, even with larger images, when using Wave Warp and similar =
automated effects, but with those effects, there is no control over =
specific parts of an image -- it's just am automated wave that passes =
through the image -- so, while smooth, it doesn't give me the same =
results that Mesh Warp could.   I've tried more points with smaller =
movements and more keyframes, and fewer points with bigger movements and =
fewer keyframes, but nothing really works as precisely as it should.

Pete=