Full: Convert Glb To Vrm

This is where most conversions fail. GLB files rarely contain VRM-ready expressions (Joy, Angry, Sad, Fun, etc.). A "full" conversion requires you to map existing shape keys or create new ones.

Scenario A: Your GLB has Morph Targets (Shape Keys) Look at the mesh’s Object Data Properties (Green triangle icon). If you see keys like eye_blink_L, mouth_smile, or brow_up, you are lucky.

Scenario B: Your GLB is Static (No Face Shapes) You must sculpt or create shape keys manually. This is time-consuming but essential for a convincing avatar.

if name == "main": # Method 1: Direct conversion glb_to_vrm("input.glb", "output.vrm", "MyVRMModel") convert glb to vrm full

# Method 2: Using trimesh
# glb_to_vrm_trimesh("input.glb", "output.vrm")

| Problem | Fix | |--------|-----| | No humanoid bones | Use Mixamo auto-rig, then export as FBX → GLB | | VRM export missing face expressions | Add blend shapes in Blender/Unity | | Texture missing | Re-link images in Blender’s Shader Editor | | Rotation wrong | Apply rotation/scale before export |

The VRM standard includes metadata (avatar name, author, allowed licenses) and look-at settings that Blender cannot handle. Unity is mandatory for a full conversion. This is where most conversions fail

Step 1: Setup Unity

Step 2: Import the VRM from Blender Drag your .vrm (exported from Blender) into the Unity Assets folder. It will automatically appear as a VRM prefab.

Step 3: Spring Bones & Colliders (The "Full" part) GLB has no physics. VRM requires it. Scenario B: Your GLB is Static (No Face

Step 4: Blendshape Mapping (Lip Sync & Expressions)

Step 5: Meta Data & Look At

Place GLB file into Assets folder — UniGLTF will import it and create prefab and materials.

Select imported prefab; open Model tab in Inspector:

VRM expects the model to face +Z forward and +Y up. GLB files often come facing +X or +Y.