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Screenshots? YouTube? You may of course be right on some level about the stuttering being caused by to fast a move but it would realyl help to see what's going on. Same for the artifacts you claim to see - could be random pixel noise from the cutouts not being as clean as you thought and only showing up at specific angles, could be weird interaction of effects, layer styles and that vs. 3D layers.
I downloaded the clip and checked it in AE stepping through the animation one frame at a time using the Page Down key. There is no problem with the motion from the render. Each element moves exactly the same number of pixels per frame.
This means you have three options to fix the project so that the motion appears smooth to the eye.
- Change the speed so that the stroboscopic effects of the movement are minimized or eliminated.
- Increase motion blur sufficiently to hide the stroboscopic judder.
- Use a combination of the two previous techniques.
Follow the link Todd posted to learn why this is happening.
Simply increasing the frame rate to 30 fps greatly improves the motion in your project. Decreasing the frame rate to 24 makes it worse.
Thanks guys. Very helpful information. The forseeable solution is to find a level of motion blur that the client is comfortable with and to roll with it.