I used these two characters that were created some time ago for an explainer video. I've always wanted to try joysticks'n'sliders for lip sync. I think it turned out ok for the first time. The head movements were secondary, so they wobble back and forth a little pointlessly. I wanted to focus on the lip sync.

The voice over is from the Simpsons, Season 20, Episode 17 "the good, the sad and the drugly" - but in German.

One problem I had is that the boy's tooth is actually outside of his mouth. If the mouth closes slightly or completely (e.g. with the "M"), the tooth should be visible. Unfortunately, I can't do this with the masks. Therefore, when speaking, the tooth is inside the mouth. I think it is hardly noticeable when the first and last frame of the synchronization shows the picture with the tooth. Maybe someone has a solution how to solve the problem?

And here again as a screenshot.