Unable to Import Alembic as Skeletal (Geometry Cache Works Fine)

Development Character & Animation
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1

Hello everyone,

When I imported the Alembic file as a geometry cache from Maya into Unreal, I can play the animation without an issue.

However when I imported the same file as a skeletal mesh, the Unreal Alembic Importer reported an error that it was “unable to compress animation data, no meshes found with Vertex Animation and baked Matrix Animation is turned off.” I was wondering what needs to be fixed in order to successfully play the animation.

I have attached my Alembic file here in case that someone wants to check it. Thank you for help.

2

I’m getting the same issue in 4.16. However, in my case the geometry cache doesn’t seem to work either, which is understandable since it’s an experimental feature.

3

After some more searching online it seems the alembic file I downloaded has a tearable surface constraint. So perhaps Maya constraints don’t play well with the UE4 alembic loader?