There are also many details in facial animation. Previously, I used to think that the focus was on the lip movements, but I later realized that this is just an important part of it. The body’s motion path, hand movements, and eyebrows are also extremely important.

The creation of lip movements is completely different from what I imagined. First, it requires adjusting the jaw’s opening and closing according to the rhythm of the speech. The jawbone rotates and moves, so it’s best to avoid using translation in the initial stages.

Then, adjust the range of contraction for the corners of the mouth and the upper and lower lips; the difference between “e” and “o” is clearly reflected in the mouth corners. Finally, use other smile controllers to create details.

The key is to focus on the content within the camera’s frame and angle; anything outside the shooting range doesn’t need to be animated. There’s no need to cover every detail.