pose_mat in video_to_pose_server.py

[xiaohu-art]

Thank you for your work! But there is something confusing me that In the python file video_to_pose_server.py, you create global variable pose_mat but never update it. For pose_getter, you send it to json with superfast = False, And I also check Metrabs doc and make sure that there is no pose_mat related output from Metrabs. May I know how can I get the correct pose_mat or the root orientation? Or could you slightly explain how can I calculate the root orientation based on the SMPL 24 joints? Looking forward to your replay！