While VRChat provides built-in parameters for visemes ( vrc_viseme_* ) and eye tracking ( vrc_eyelid_* ), vrcfaceblendh is part of the custom expression pipeline. It allows you to drive specific BlendShapes directly from an animation or a gesture.
Technically, yes. But here’s why vrcfaceblendh is better practice: vrcfaceblendh
Let’s break down what vrcfaceblendh actually is, why it matters, and how to use it without breaking your avatar. In simple terms: vrcfaceblendh is a float parameter that controls a custom facial BlendShape (morph target) on your avatar. While VRChat provides built-in parameters for visemes (
The "h" in vrcfaceblendh ? That stands for (or historically, "head")—it's designed for face BlendShapes on a humanoid rig. Why Use vrcfaceblendh Instead of Direct BlendShape Control? You might ask: Can't I just animate the BlendShape by its original name (e.g., smile_left )? But here’s why vrcfaceblendh is better practice: Let’s
Happy avatar building! 🧙♂️✨