Delete the GLB model from your scene and drag the newly exported VRM file into your Assets folder, then into the Scene.

Without converting a GLB file to VRM, most VTubing software (like VTIyan, Luppet, or VSeeFace) and social VR platforms (like cluster or Helios) will not recognize the model's skeletal structure or facial controls. Prerequisites for a Successful Conversion

Define the author, model title, and license settings (e.g., allowed or disallowed use of the avatar). 6. Export the VRM File Click in the UniVRM window. Save the file as a .vrm . Best Practices for GLB to VRM Conversion

Unlike a standard GLB, which is a general-purpose 3D container, a VRM file includes:

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Ensure the model armature matches the standard humanoid layout. If your armature names do not match Blender’s default conventions, you will need to map them manually in the next step. Step 3: Map the Humanoid Bones Select the avatar armature.

Fill out the mandatory Title, Author, and Contact fields in the exporter window. Click to save an initial VRM file. Step 4: Refine and Re-export Import the newly created VRM file back into Unity. Drag the VRM prefab into your scene.