Recover Motion Reconstruction Day done-ish

Did a lot of stuff but too lazy to write (basically edited all code to suit python3)

• spent an hour on a bug that didn't exist !!!!
• worst thing to every exist TypeError: only integer scalar arrays can be converted to a scalar index
• honestly probably when through all python built in errors
• vi lifesaver ,+<num lines u wanna replace>s/<thing u want replaced>/<what u wanna replace w>cg add cg if u wanna confirm
• but YAYAY refine_video works :):):):):)):):):):)) ... took 3 mins to run

ah look at them go #getursummerbodready #hotgirlsummer

For my short term memory loss (jk but still) combat ModuleNotFoundError: No module named 'posemapper'

source venv/bin/activate # just me
cd sandbox/motion_reconstruction/ # me again 
export PYTHONPATH=~/sandbox/SMPL_python_v.1.1.0/smpl/smpl_webuser/ # !!! this part
python3 -m refine_video