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Auto-Orient Y Expression Causes Jitter
So the animation I’m working on involves a progression of static images coming onto the screen just behind a camera dolly move. They’re photos of an athlete doing their thing, running, jumping, whatever. There’s mostly a Z move with a touch of X/Y and some orientation, also a little wiggle on the camera’s position. All the static images, KO’d in PS, have an Auto-Orient Y expression to keep them square to the camera.
The thing is, all the images have a slight rotation wiggle, or jitter or whatever. It’s throughout the animation, all during the camera move and everything.
Here’s a link to part of the video if you want to see:
https://reels.creativecow.net/film/yoga-jitter-example
This is a little different shot but the same idea, it just had the worst jitter of the clips. I know it’s not very good, still learning, just a rough draft.But if anybody has an idea what’s causing the weird behavior…
Thanks
delta = toWorld(anchorPoint) - thisComp.activeCamera.toWorld([0,0,0]);
radiansToDegrees(Math.atan2(delta[0],delta[2]))
Corbin Gross
Creative Services
Marketing
SanMar Corp. -
3 Replies
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How far is the camera from the images and what is the wiggle expression for the camera?
Dan
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In this shot the distance is approximately 3000 px at the start and ends up at approx. 1700 px.
The wiggle expression is “wiggle(1,10)”.
Corbin Gross
Creative Services
Marketing
SanMar Corp. -
I’m stumped. It would be hard to diagnose without seeing the project.
Dan
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