I have built a character with facial features similar to the "Seth" puppet. I am having the lip-sync and head movements to follow a pre-recorded audio track. So far, so good. The only issue I'm having is that the facial features (eyes, eyebrows and mouth) tend to drift accross the face instead of staying in the same place on the face, as if it was the red monster. Is this normal or did I mess something up?
You could check the parallax settings? Are the origins of any independent layers for eyes etc green (indicating correctly attached to the parent)?
Could you share the rigging hierarchy? Maybe a short video? What you are describing does not sound normal. Or put another way, try another character from Adobe - if it is not doing the same thing, then its something about your rigging.
I will give it a try and get back to you. Here's the weird thing. It only appears to be happening with the "Compute Head Movement from Speech" action in the Timeline menu. I cannot replicate it with normal head tracking movement.
I just tried it with the Tull puppet and got the exact same results. It looks like I'll have to do my own head movements for now.