Does anyone know how to constraint an object to animated Null in an Alembic file ?

When I use a CHOP constraint it only uses the first frame or the frame I'm at when I activate the constraint, no matter what setting I try in the Alembic or constraint.

The only way seems to be to parent a new Null to the Alembic Null in the Alembic file, and then constraint to that. But then I have to redo the whole thing every time I replace the Alembic.

Me thinks there must be a way to constraint directly to an animated Null in an Alembic, the data seems to be there.

Anyone ?

Thanks.

seems like you are talking about Object level Alembic Archive

the easiest is to use Fetch Object node directly in /obj and fetch transform of any object from inside of the Alembic Archive
then just parent what you want to that Fetch Object

you can also import Alembic SOP and then use packedfulltransform intrinsic to transform any piece of geo or technically even object with the help of VEX or Python or CHOPs, but that may not be as direct, however sometimes it's more convenient than dealing with object level

Great, "Fetch Object" that did the trick.

A different hammer for every nail.

Thanks !