👀 Step 4: Fixing Eye Tracking and Expressions (BlendShapes)
Under the tab in the exporter, click + to add a new VRMSpringBone .
If your GLB is already perfectly rigged and you just need a format swap:
const meta = name: 'My VRM Model', author: 'Your Name', ; convert glb to vrm fixed
fields during export or the file may be rejected by platforms. バーチャルマーケット Need help with a specific error during export? I can troubleshoot bone mapping shader errors if you describe what happened. How to Create VRM File - Virtual Market
The original GLB texture might not look right. Select the material components of your model, and in the Inspector, change the shader to VRM/MToon . Re-assign the textures to the corresponding texture slots (Main Texture, Shade Color). 4. Setting Up Humanoid Skeleton Select the root object of your model.
VRM requires a strict T-pose. If your GLB is in an A-pose, you must re-pose and "Apply as Rest Pose" in Blender before exporting. Fast Online Converters 👀 Step 4: Fixing Eye Tracking and Expressions
Adjust the (how quickly it snaps back) and Gravity Power (how heavy the material feels) until the movement looks natural in the preview window. 📤 Step 6: Final Export and Testing
Download and install . Create a new project using the Unity version recommended by the latest UniVRM release (typically a stable LTS version).
This is currently the most popular way to convert and fix models without using complex game engines. I can troubleshoot bone mapping shader errors if
— Renaming .glb to .vrm will not produce a functional VRM avatar. It only works when the source file was already a VRM file in the first place.
This is the core of our troubleshooting. We'll systematically fix the most common conversion failures.
Note: This requires a free Unity Personal license.
| Symptom | Likely Cause | The Fix | | :--- | :--- | :--- | | | GLB used Z-up; VRM uses Y-up | In Blender, rotate armature +90 on the X axis before export. | | Arms stretch infinitely | Bone scaling issues in GLB | In Blender, select armature, Ctrl+A -> Apply Scale . | | No facial expressions | Shape keys not transferred | In UniVRM, check "Blendshape" tab. Manually map Mouth_A, Mouth_E, etc. | | Pink textures | Missing MToon shader | In Unity, select the material. Change Shader to VRM > MToon . | | Metallic/shininess | GLB PBR materials don't match VRM | Reduce "Metallic" to 0 in Blender materials. Use "Roughness" maps as "Shade" maps. | | Collision fails (Spring bones) | Missing Spring Bone colliders | In Unity, add VRMSpringBone collider to the Hips or Chest bone. |