Mediapipe is primarely for tracking faces in 3d-space and it is good at that, but on sertain facial expressions (mouth wide open) the face-mesh does not open the mouth as wide as it really is.
Solution
Two-dimensional tracking has proofen itself worthy with applications like FaceRig. A famous python library for tracking face in two dimensions is dlib.
Problem
Mediapipe is primarely for tracking faces in 3d-space and it is good at that, but on sertain facial expressions (mouth wide open) the face-mesh does not open the mouth as wide as it really is.
Solution
Two-dimensional tracking has proofen itself worthy with applications like FaceRig. A famous python library for tracking face in two dimensions is dlib.