Broken animations in USDZ 3D models typically result from three key issues: compatibility gaps between export software and viewers, incorrect export settings (e.g., missing animation data), or file corruption during transfer.
- **Compatibility gaps**: Viewers like older iOS AR Quick Look may not fully support USDZ’s animation features (e.g., rigging, curves), causing glitches. - **Incorrect export settings**: Forgetting to enable animation options in tools like Blender or Maya can strip out critical data, breaking animations. - **File corruption**: Incomplete transfers (e.g., bad downloads) can damage animation data stored in the USDZ file.
To resolve this, update your 3D tool’s USDZ exporter, ensure all animation layers are included during export, and test the file on multiple viewers (e.g., Apple’s AR Quick Look, Autodesk Viewer) to rule out device-specific problems.