[Tom Gilbert]

Hello,

I am doing short video, but encountered problem related to motion path. I have a composition in 3D space where camera and 3D cube are moving. Everything is ok, but I want to apply a motion blur effect on cube when it spins. Cube consists of 6 nested layers: back, left,…, front. (see image below).

These layers are parented to null object, which controls all the movement of cube.
So, to apply blur effect only on cube, I had to precomp all these 6 layers and add adjustment layer with blur effect inside that comp. After that, the cube doesn’t move along null object’s path anymore. It just moves somewhere around camera and rarely appears into frame.
Maybe someone could give me an advice on how could I fix it?

Thank you

[Tom Gilbert]

Thank you guys for helping me out.
Like John said, it was impossible to correct edges automatically, so I had to do it manually via photoshop. Interesting that in photoshop I had 24 different layers, while AE showed 42 frames, where some of them were duplicated. However, the best that worked for me about auto fixing edges in AE was to add “shift channels” and “find edges” effects. Then I created adjustment layer below and changed it to luma inverted. Then added various color changing effects to it.