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MotionVTube Studio tracking for Minecraft avatars

Reproduce head movement, eye state, mouth shapes, and expression sync on your in-game avatar.

GitHub
Changelog
Feature checklist
Motion preview

Client-side overlays

Apply facial overlays and expressions to vanilla or Skins-provided player textures.

Multi-loader build

Fabric, NeoForge, and Paper bridge builds keep avatar-state sync available across servers.

Skins-compatible

Work alongside Skins so Skins owns textures and Motion owns live motion.

Overview ​

Motion connects to VTube Studio through the WebSocket API or VTS UDP tracking and maps the incoming head, eye, brow, and mouth data onto Minecraft avatars. It can run by itself with vanilla skins or together with Skins, where Skins provides the player texture and Motion owns tracking, overlays, calibration, and avatar-state sync.

Build ​

bash
# Fabric 1.21.11
./gradlew :loader-fabric:build -PmcVersion=1.21.11 -PonlyLoader=fabric

# NeoForge 1.21.11
./gradlew :loader-neoforge:build -PmcVersion=1.21.11 -PonlyLoader=neoforge

# Paper bridge
./gradlew :loader-paper:build -PonlyLoader=paper

Metadata ​

  • Loader/API versions are resolved from mcmeta.
  • Motion keeps the umotion:* avatar-state channel namespace.
  • On first startup, Motion can import tracking settings from a legacy skins_client.json if umotion_client.json does not exist.

Downloads ​

Feature checklist ​

Track feature progress in the checklist.

Feature highlights ​

  • VTube Studio WebSocket tracking
  • VTS UDP blendshape tracking
  • Client-side face overlays
  • Multiplayer avatar-state sync
  • Optional Skins coexistence