Tried exporting the Geometry Cache from Audio2Face in Maya format so I could bring it into 3ds Max first. In 3ds Max I can apply the Geometry Cache successfully to my face mesh using the Point Cache Binding modifier. If I scrub the timeline, the animation plays fine. I then exported the face mesh in USD format with Use Animation and Use Animation Range ticked:
Unfortunately I still can’t import it into Unreal Engine with the Omniverse right-click option ‘Import USD Animation’. I get a ‘Failed to Import’ message and the logfile shows the following:
[2024.05.06-01.49.38:454][879]LogOmniverseImporter: Error: Skeleton c14-TestRig_Skeleton isn't compatible with C:/Users/Knut99/Desktop/c14-TestRig/a2f/TestRig_GeoCacheExportedFrom3dsMax.skelanim.usd
Back to trying to work something out with Alembic, I guess?