Bone motion transfer in blender?

So, for the longest time, I’ve been trying to find a way to transfer motion from some BVH’s that I’ve downloaded over the years onto valve standard skeletons (See HL2 citizen and TF2 characters), but I haven’t been able to find anything aside from MAYA tutorials. Is there a blender specific way of doing this, or am I shit out of luck?

BVH?

Motion capture format that a lot of programs support.

Well I can’t help much there. If all else fails you could try getting a student edition of Maya. Those are free but you can’t make commercial content with them.