Meta Avatar 2.0 Facial Dynamics: Stylized FACS and Scaling Solutions
SergiCaballer · x · 2026-09-02
Sergi Caballer details the technical implementation of facial expressions in Meta Avatar 2.0. The core challenge is maintaining a consistent visual language—bold, planar, graphic shapes—across millions of user variations. Since authoring FACS (Facial Action Coding System) for every identity is impossible, the team authors a shipping set on a canonical neutral face, which is compatible with any identity. The post explains how FACS rules are broken to achieve stylization and boldness, including split-side and quadrant corrections for animator controls and OpenXR face tracking on Quest Pro.
Related event: Meta Details Stylized FACS Facial Animation in Avatar 2.0(2 posts)→
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