Audio2Face supports keyframing to set emotions over the course of an audio clip:
However, these keyframes are essentially write-once. Currently, there’s no support to dragging the keyframes around afterwards. If you want to move the keyframe, you have to delete it, and completely recreate it at a different point in time.
There’s also no support for sheet/curves, which would allow us to adjust the easing, or transition speed, of the emotions.
I was wondering if these tools would be getting some feature improvements in the near future? Or whether they already support this, and I just didn’t notice it? Thanks.