This is where a "basic" conversion differs from a "full" conversion. Leo had a moving model, but it was a statue. To make it a full VRM, he needed to add personality.
1. Blendshapes (Expressions): A GLB file might have shape keys for blinking or smiling, but VRM needs to know what those keys are for. Leo selected his model and opened the VRM export window. Under the "Blendshapes" tab, he mapped his model's morph targets to VRM standards.
2. Spring Bones (The Bounce): One of the most defining features of a VRM file is physics baked into the file itself. "My helmet has a antenna," Leo noted. "In GLB, it's rigid. In VRM, it should wobble." He added VRMSpringBones. He created a bone group for the antenna, setting parameters for stiffness and gravity. Now, when the avatar turned its head, the antenna would lag behind naturally, giving it that anime "alive" feel.
3. LookAt (Eye Tracking): He calibrated the eye bones. He defined the range of motion so that when a user looks at a camera in a VTuber app, the avatar's eyes would follow. convert glb to vrm full
You missed the VRM Meta license in Unity. VRChat requires Redistribution Prohibited or CC BY to be set. Without a license, the SDK will throw an error.
A standard conversion might just change the file extension. A full conversion does the following:
Skipping these steps results in a T-pose statue, not an avatar. This is where a "basic" conversion differs from
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.
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. Skipping these steps results in a T-pose statue,
Step 3: Spring Bones & Colliders (The "Full" part) GLB has no physics. VRM requires it.
Step 4: Blendshape Mapping (Lip Sync & Expressions)
Step 5: Meta Data & Look At
This is the industry standard for a full conversion. It takes 15-30 minutes but yields a VTuber-ready avatar.