Once you have imported some facial motion capture data and added an Actor Face to the scene, you can set up the motion data to drive the Actor face.
To connect an Actor Face to motion capture data:
Defining facial regions. A. Click Find. B. Click Ok.
MotionBuilder automatically defines the zone of movement for the facial markers.
You can scale the global movement using the bounding boxes that define specific zones for the mouth, eyes, and eyebrows. For example, you can scale up the bounding box for the mouth to decrease the range of movement.
Actor Face settings A. Snap option
Facial Tool dialog box
The starting pose of the face is set, and the mapping is activated. The Active option is automatically enabled, and the other options in the Regions and Rest Pose areas are disabled. To make any changes to the mapping, you must disable Active.
The Use MoCap option is activated in the Channels pane.
The motion capture source can now drive the channels. When you play the animation, the channel sliders move and show their active values, and the Preview pane shows the effect of the motion capture data.
When you have completed these steps, you can continue setting up your Actor Face to drive a Character Face.
See Facial motion capture workflow.