NikKelly posted at 5:15 PM Sat, 12 February 2022 - #4434707

In this context, USD, for such as me who thought, "Huh ? $$$ ??", is Pixar's 'Universal Scene Description' file-format...

Open source !!

As I understand it, does not provide a 'portable' rigging system, but allows multiple different types of graphics to be combined. Sorta 3D equivalent of toons' 'Cels'...

Yes USD is open source, and while its true not all animation software can or will recognize the rigging system of others, the rigging is preserved as exported meaning...If you export a USD file alter in another program(eg: Omniverse/ Unreal, or other) and need to return to the original program, riging remains intact for further refinement... Round trip if you will.

USD's strongest suit(for me and some others)  is in movie making, the ability to move scenes around , picking up elements that are best implemented in various software and combining them in powerful render engines(so called realtime which isn't really realtime, but that's a rant for another venue).

Y'all have a great day.

Y'all have a great day.