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Mixamo Animation Retargeting

Unreal Engine 4 Plugin

Editor plugin for precise and automated retargeting of skeletons, skeletal meshes and animations created with and exported from Mixamo tools (Auto-Rigger, 3D Characters, 3D Animations).

Mixamo Animation Retargeting is an editor plugin that helps integrating Mixamo assets (exported from Auto-Rigger, 3D Characters, 3D Animations) into Unreal Engine 4.

In addition to the base setups required by the Retarget Manager, the plugin implements some advanced functionalities to obtain a perfect retargeting and optimal integration into Unreal Engine 4:

  • the Retarget Base Pose is computed analytically, to obtain an exact and perfect match of the skeletal meshes used during animation retargeting;
  • a Root bone is added to the Mixamo skeleton (and all related skeletal meshes), allowing the use of Root Motion for animations.
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To run the tool:

  • ensure that the Unreal Engine 4 mannequin skeleton in your project has the “Humanoid” rig set;
  • select a Mixamo skeleton asset and execute the “Retarget Mixamo Skeleton Asset” contextual action.

The tool also supports batch processing.

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Tech details

  • Editor plugin.
  • No third party code.
  • Automatic setup of Translation Retargeting options.
  • Automatic setup of Rig mapping.
  • Analytical computation of the exact Retarget Base Pose. Some bones preserve the original component space orientation due to differences between Mixamo and Epic reference poses: "Head", "LeftToeBase", "RightToeBase".
  • Addition of the Root bone to enable Root Motion animations.
  • End results can be manually tuned if needed.
  • Animation Retargeting is done with the standard editor pipeline (Retarget Anim Assets > Duplicate Anim Assets and Retarget).
Platforms: Windows, Mac.
NOTE: This product is not made by, or affiliated with, Mixamo or Adobe Systems in any way.