Could you open source 60hz bvh files?

Hi, I am trying to reimplement Learned Motion Matching. In Learned Motion Matching, the framerate is 60hz. However, this bvh dataset is under 30hz. 

Coud you open source 60hz bvh files? Or is there any convenient method to extend 30hz bvh to 60hz bvh?

Thanks a lot!