Unreal won't import Alembic file

Development Asset Creation
1

Hello and good afternoon everyone. I have this Alembic file I am trying to import into Unreal 4.23.1 This file is just a particle animation blobmesh. Every time I try to import it as either a Static mesh, Geo Cache, or Skeletal mesh the importer just fails and closes out. The output log doesn’t off any advice either. It just reads:

" AssetTools: New page: Importing BlobMesh_001_ReExport.abc
LogSlate: Window ‘Message’ being destroyed
LogAssetTools: Warning: Failed to import ‘…/…/…/…/…/…/…/Import/Displacement/BlobMesh_001_ReExport.ABC’. Failed to create asset ‘/Game/GeoDisplacement/Models/Water/BlobMesh_001_ReExport’.
Please see Output Log for details.
LogSlate: FSceneViewport::OnFocusLost() reason 0
LogFactory: FactoryCreateFile: StaticMesh with AlembicImportFactory (0 0 …/…/…/…/…/…/…/Import/Displacement/BlobMesh_001_ReExport_2.ABC)
LogSlate: Window ‘Alembic Cache Import Options’ being destroyed

I am under the assumption that its because there is only the particle effect and no geo being exported in the alembic, however I thought blobmesh converts objects into geo. If that is not that case, anyone have any ideas on how to convert my blobmesh to geo, or just have the importer work?

2

Figured it out, turns out if there’s no geo visible on frame 1, Unreal doesn’t that like that. I adjusted the animation to have geometry on frame 1 and it imported just fine.

8 Likes
3

Thanks, that solved it for me too!

4

thank you!!! You saved my day!!!

5

Thank you! I was wondering what I was doing wrong