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Scaling interpolation acting like spatial interpolation
I need to move a clip and scale it at the same time. As far as its position, I’ve set up a temporal curve to ease in and out between point A and B. I want it to move in a straight line, so under spatial interpolation, the keyframes are set to linear. Then I set the scaling. I set a curve to ease in and ease out between size A and size B. The result blows my mind. A curved spatial path is created for the clip, just as if I’d set its position keyframes under “Spatial Interpolation” to Bezier. While the scaling does ease in and out, it’s at the cost of the clip moving far off the straight line I need. Only when I set the scaling keyframes to linear can I avoid this mysterious spatial interpolation. But I want the scale to be fluid, not jerky, so this is an unsatisfactory compromise. Can anyone help me figure out what’s going on and what the workaround is?
Thanks
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2 Replies
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Stephen
Animate your anchor point parameter instead of position. Keep the position right in the center of the screen. This not only helps with animating scale, but it also allows you to fiddle with rotation if you want (like the camera wobbles a tiny bit while zooming in) — the rotation will happen around the center of the screen. Good luck!Ben Unguren
Motion Graphics & Editing
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Thanks for your help. I tried this method of animating the anchor point instead. This results in a somewhat more direct movement line than the skewampus path I get when animating position on top of animating a bezier scale, but I’m afraid the image still isn’t moving in a straight line. I’m still seeing a bezier curve in the spatial movement, when I need it to be linear. Only the scaling should have a bezier ease in and out. Any other ideas?
Or is what I want impossible? Do you think I could be experiencing something like an optical illusion because the scaling and movment aren’t in tandum, and so it causes the movement to appear irregular, when in reality it is moving in a straight line?
P.S. your portfolio inspires me.
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