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GLB to USDZ — how to keep animations for Apple Quick Look?

Daniel Kim

67d ago185 Views2 Replies

I'm building an AR experience for a furniture client. I have animated GLB files (a chair that unfolds, a table with extending leaves) and I need USDZ versions for Apple Quick Look on iOS.

The GLB to USDZ converter gives me the geometry and textures fine, but the animations are stripped. Is there any way to preserve skeletal or transform animations during the conversion?

Or is there an alternative workflow you'd recommend for getting animated USDZ files?

Replies (2)

Best Answer

Jake Thompson

66d ago

USDZ animation support is tricky. Apple Quick Look only supports a subset of USD animations — mainly transform animations and skeletal animations that follow Apple's specific schema.

The converter handles static models really well, but animated USDZ requires Apple's Reality Converter tool or the usdzconvert CLI from Apple's AR tools. Here's what I do:

Export animated GLB from Blender
Use Apple's Reality Converter (macOS only) to convert GLB → USDZ with animations preserved
Test in Quick Look on an actual iPhone

Unfortunately there's no good cross-platform solution for this yet. The iLove3D converter focuses on static geometry which covers 90% of use cases.

Emma Chen

67d ago

For my e-commerce clients I just skip animations in USDZ and keep them in the GLB version for the web viewer. On iOS I provide a static USDZ with the default pose which works great for Quick Look "try in your room" experiences. Not ideal but it works for furniture.

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GLB to USDZ — how to keep animations for Apple Quick Look?

Replies (2)