代码插件
UE5.0
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UE4 Mixamo Animation Retargeting is an editor plugin that helps integrating Mixamo assets (exported from Auto-Rigger, 3D Characters, 3D Animations) into Unreal Engine 4.
With few clicks, it allows you to use any Mixamo animation with any UE4 character, and use any UE4 animation with any Mixamo character. In addition, it makes possible to use Root Motion animations on Mixamo characters and create Root Motion animations from Mixamo In-Place animations.
Note: this product is not made by, or affiliated with, Mixamo or Adobe Systems in any way.
The plugin implements several advanced functionalities to obtain the best results in an automated way:
automatic configuration of all the setups required by the UE4 Retarget Manager;
the Retarget Base Pose is computed analytically, obtaining an exact and perfect match of the skeletons used by UE4 for the retargeting of the animations;
a Root Bone is added to the Mixamo skeleton (and all the related skeletal meshes and animations), allowing the use of Root Motion animations with it;
convert Mixamo animations to UE4 Root Motion Animations (NOTE: both the normal and in-place Mixamo animations are required, see the video tutorial).
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.
Then you are ready to retarget all the needed animations (select an animation, then Retarget Anim Assets > Duplicate Anim Assets and Retarget).
Note that some retargeted animation could require a final quick manual adjustment inside the Editor. Please check the documentation (and video) for details.
The tool also supports batch processing.
Since the first release for UE4.14 in 2017, we always released upgrades of this plugin for free. Unreal Engine 5 changed substantially how retargeting works in the engine (see the UE5.0 release notes), and this required a complete rewriting of the foundations of the plugin, that is no more compatible with the UE4 version. The new plugin for UE5, taking advantage of the new features of the engine, includes several enhancements over the UE4 version (including support for MetaHuman).
Remember that you can continue using this plugin with UE4 and then use the "Migrate Asset" option to migrate all the processed assets to your UE5 project.
技术细节
• 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 differences between Mixamo and Epic reference poses: "Head", "LeftToeBase", "RightToeBase".
• Addition of the Root bone to enable Root Motion animations.
• End results can be hand-tuned if needed (see the video tutorial).
• Animation Retargeting is done with the standard editor pipeline (Retarget Anim Assets > Duplicate Anim Assets and Retarget).
• Conversion of Mixamo animations to UE4 root motion animations (both “normal” animation and “in-place” animation are needed for the computation - see the video tutorial).
• As importing a new animation on a modified skeleton causes the "FBX Import Error" message, see the video tutorial.
Intended Platforms: Windows, Mac
Platforms Tested: Windows, Mac
UE4 Mixamo Animation Retargeting 是一个编辑器插件，可帮助将 Mixamo 资源（从 Auto-Rigger、3D 角色、3D 动画导出）集成到虚幻引擎 4 中。
只需单击几下，您就可以将任何 Mixamo 动画与任何 UE4 角色一起使用，并将任何 UE4 动画与任何 Mixamo 角色一起使用。此外，它还可以在 Mixamo 角色上使用 Root Motion 动画，并从 Mixamo In-Place 动画创建 Root Motion 动画。
注意：该产品不是由 Mixamo 或 Adobe Systems 制造的，也不以任何方式与其有关联。
该插件实现了多种高级功能，以自动化方式获得最佳结果：
自动配置 UE4 Retarget Manager 所需的所有设置；
Retarget Base Pose 是通过分析计算得出的，可获得 UE4 用于重新定位动画的骨架的精确和完美匹配；
将根骨骼添加到 Mixamo 骨架（以及所有相关的骨架网格和动画），从而允许使用根运动动画；
将 Mixamo 动画转换为 UE4 根运动动画（注意：需要普通和内置的 Mixamo 动画，请参阅视频教程）。
要运行该工具：
确保项目中的虚幻引擎 4 人体模型骨架具有“人形”装备集；
选择 Mixamo 骨架资产并执行“重新定位 Mixamo 骨架资产”上下文操作。
然后，您就可以重新定位所有需要的动画（选择动画，然后重新定位动画资产 > 复制动画资产并重新定位）。
请注意，某些重新定位的动画可能需要在编辑器内进行最后的快速手动调整。请查看文档（和视频）了解详情。
该工具还支持批处理。
自 2017 年首次发布 UE4.14 以来，我们始终免费发布此插件的升级。虚幻引擎 5 极大地改变了引擎中重定向的工作方式（请参阅 UE5.0 发行说明），这需要完全重写插件的基础，不再与 UE4 版本兼容。新的 UE5 插件利用了引擎的新功能，包括对 UE4 版本的多项增强功能（包括对 MetaHuman 的支持）。
请记住，您可以继续在 UE4 中使用此插件，然后使用“迁移资产”选项将所有已处理的资产迁移到您的 UE5 项目。
技术细节
• 编辑器插件。
• 无第三方代码。
• 自动设置平移重定向选项。
• 自动设置装备映射。
• 精确重定向基本姿势的分析计算。由于 Mixamo 和 Epic 参考姿势之间存在差异，一些骨骼会保留原始组件空间方向：“头部”、“LeftToeBase”、“RightToeBase”。
• 添加根骨骼以启用根运动动画。
• 如果需要，可以手动调整最终结果（参见视频教程）。
• 动画重定向是通过标准编辑器管道完成的（重新定位动画资源 > 复制动画资源并重新定位）。
• 将 Mixamo 动画转换为 UE4 根运动动画（计算需要“正常”动画和“就地”动画 - 参见视频教程）。
• 由于在修改后的骨架上导入新动画会导致“FBX 导入错误”消息，因此请参阅视频教程。
目标平台：Windows、Mac
测试平台：Windows、Mac
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