This is not really a tutorial, but more of a developer’s diary type of thing. It is intended for game developers. I will be grateful for comments, suggestions and other constructive criticism.
Diffeomorphic Add-ons Version 4.1.0 [BVH and FBX Retargeter] for Blender 4.1 is out. To make it work you need to first “Load BVH or FBX Files” and then “Retarget Selected To Active”. Then the animation will be assigned.
A version of Diffeomorphic BVH and FBX Retargeter for Blender 5 has been released. Therefore, the tutorial is relevant for all recent versions of the software.