Hi,
I'm trying manipulating Intrinsic transform of simple polymesh packed geometries with an attribute vop but i don't get any motion blur.
Do I need some extra steps to do that ? Look like I only get motion blur by unpacking then calculate velocity. Step i don't need at all if i use classical transform with unpacked geo…

Ok,
Maybe i'm not clear enough

Manipulating transform (scale translation rotation) of packed geometries at SOP level requires an Unpack SOP + Trail SOP + Use Geometry Velocity Blur, to generate proper motion blur.

That kill the purpose of packed geometries…

Do i miss somethings ?

I suppose you need Geo Time Samples > 1 to get packed prims blurred properly. Other than that, it seems to work as expected here.