How to use C3D Format?

Ok so i got one site with some awesome free animations, but they are in C3D format, was wondering how to use them?
Site: www.mocapclub.com > Library > Video Game
so how would i use them on some simple rigged model?

Correct me if I’m wrong, but from what I understand, .c3d files contain motion capture data only,
recorded in worldspace coordinates. It doesn’t contain a skeleton hierarchy like .bvh. Just
marker names. So, the data must be re-targeted and remapped. I guess it depends on the software
that created the data.

Anyway, to use it, the c3d marker names probably need to be remapped to the joint names used
on your rigging. This is usually done with a simple text file that can be edited.
Sorry, I haven’t used it myself, so I don’t know the full process.

I think the latest version of Blender has a .c3d import script as an add-on.
You might want to look at that first.