Most models are only available as glb or fbx, so I usually reexport them into usdz using Blender.
When I import them into Reality Composer Pro, Mesh, Textures etc look great, but in the Animation Library subsection all I can see is one default subtree animation
.
In Blender I can see all available animations and play them individually. The default subtree animation
just plays the default idle animation.
In fact when I open the nonlinear animation
view in Blender and select a different animation as the default animation, the exported usdz shows the newly selected animation as default subtree animation
.
I can see in the Apple sample apps models can have multiple animations in their Animation Library.
I'm using the latest Blender 4.5 and the usdz exporter should be working properly?