Hasta La Motion!

again, i’v scoured the forums and the internet and can’t seem to find an answer to my most simple of questions.

i have footage that i tracked in pftrack, then created a nuke python script via the pftrack export.

my question is, what the heck do i do with that in nuke? i go to my read node and bring in the .py file, but then what? how does the tree look? is a merge node used? do i have to setup a camera first? im completely at a loss as to how these my .mov clip and .py track combine together.