Todor Nikolov writes:
After a lot of experimentation, I think I found a very simple way to retarget mocap data (such as Mixamo etc.) to a standard Rigify Human rig. It can be done with the free Rokoko addon so the whole workflow will cost you $0. :)
What's really cool is that you can retarget to both the FK and IK controls of the Rigify rig.
All details are in the video below.If you are new to mocap/retargeting in Blender, you may like this YouTube playlist. It will take you from basic to intermediate/advanced understanding of the subject: