The Blender BVH importer has a bug. If you try to import a BVH file which has Japanese bone names, it won't import into Blender, and you will get an error message ...
Here are nstructions to convert a Makehuman MHX model to MMD, using mmd_tools (powroupi fork) Blender add-on and mmd_tools_helper Blender add-on. Similar steps are followed to convert other types of ...