Yes.

• Get pal to take video of you performing an action.
• Convert/save video as an AVI.
• In Poser File/Import AVI.
• Load Poser figure.
• Line up the figure with frame 1 of the background.
• Advance a frame and line up again.
• Repeat for all frames.

Probably works best if the original video is face on but will depend on what you are doing.