Help with jerky animations when uploading to Sketchfab


(Rikuchan) #1

Hey guys, I'm trying to add more things to my animation portfolio, but I'm having some issues with uploading my animations. Whenever I upload a non-humanoid animation, there's a neck joint that continually snaps at a 45 degree angle, and I don't know if this is because I'm exporting things incorrectly, or if it's an issue with the rig/animation itself, but I'd really like to know what's going on.

Here is one of my animations that's having this issue.

(Simon Kratz) #2

Do you have something like FBX Review? Its a free fbx viewer that lets you check if the animation has been exported correctly. If the issue is not in the fbx but only in Sketchfab the devs might be interested in it :smile:
Otherwise, maybe the order of your rotational axis doesn't match the one Sketchfab uses.
But that's just a guess, you should check if the error is within the exported fbx first.

(Rikuchan) #3

The issue actually solved itself. I made a series of test animations that I exported and uploaded individually to test if any of the joints were acting up. Eventually, I went through all the joints that would move, and I found that none of them were wonky, so I made a new animation (, and it worked perfectly.

(Rikuchan) #4

Also, no I don't have FBX Review, but I'll go and download that now :). I think it may have been the exported fbx that was the issue.

(Simon Kratz) #5

Cool! Glad it worked out for you, and good luck with future animations :smile: