Alembic support through import/export operators and data streaming through cache constraints and modifiers.

Features include export of linked dupli-groups, sub-frame sampling, face-varying vertex colors, child hairs and empties.

• Import– reads an Alembic archive and creates objects in the current Blender scene, supporting Camera, Curve, Empty, Mesh, Point object types
• Export– creates an Alembic archive supporting Camera, Curve, Hair, Mesh, NURBS, Particles object types
• Cache File Datablock – stores various properties related to cache files, to help keeping modifiers and constraints referencing Alembic archives in sync
• Mesh Sequence Cache modifier supports meshes and curves data animations, file sequences
• Transform Cache constraint, allows to stream animations made at the transformation matrix level

Support for USD files for both import and export.