Well, there are a couple of scripts by PhilC that might be helpful

http://www.philc.net/Rotoscoper.php

http://www.philc.net/BVH_helper.htm

Not sure if they work with newest version of poser. A lot of it depends on what you want to do. There are a couple of packages that do facial capture. There's Crazy Talk (never used it) with tutorials here.

https://www.renderosity.com/mod/tutorial_premium/?page=info&tutorial=34

Edited to add

Having looked at it, might not be any help at all....

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.