I don’t know if it can be classified as AI but Open Funscripter has a motion capture plugin for it: https://discuss.eroscripts.com/t/motion-tracking-funscript-generator-v0-5-x/28117
It can help you get started faster but based on my experience of using it once, you’re gonna have to watch it as it can lose the tracking. Also it’s definitely not good enough at this point to work without you heavily fixing it by hand afterwards.