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[Blender FBX] Fix Warped Humanoid Animations

Under Audit

animator

Unity 2022.3.x - Unity 6.x

Published Mon, Mar 23

Animations exported from Blender as FBX files appear corrupted or "messed up" in Unity after applying a humanoid rig.

Issue

 When importing FBX animations created in Blender, they initially appear correct within the project. However, upon applying the humanoid rig to the imported model in Unity, the animations become distorted or incorrect. This problem manifests after the initial correct import, specifically when the humanoid rig is configured for the character.

Experimental Fixes
  • Ensure the FBX export settings in Blender are configured correctly for Unity, particularly regarding scaling, animation baking, and armature options.
  • Verify the avatar definition in Unity’s Rig tab for the imported FBX, ensuring mapping is accurate and any T-pose enforcement is suitable.
  • Check for potential bone scale issues or root motion conflicts in the animation clips after applying the humanoid rig.

Editor's Note:

The above fixes have not been verified by our audit team yet. They are provided exclusively for your own technical research. We recommend creating a backup of your project before proceeding with any attempts. Utilize at your own discretion!

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Content inspired by a Unity discussion post.