create smpls for custom dataset

[orydatadudes]

hey,
i follow training process
so i download all files including smpls folder my question is :
what i have under that folder what inside kps.pkl and pose_shape.pkl?
how i can make those files for a custom data set
i follow issue number 28 work fine but imgs have to be 256*256 to create smpls files.
i also follow issue 49 but no answer is given for that

so what is the different between kps.pkl and pose_shape.pkl? and how can i care them for another costume dateset with different image size
thank you