vorpX cannot convert 2D movies to stereo 3D. Unlike games movies don’t contain any information that would allow an app like vorpX to create stereo 3D. Some 3D TVs tried to guess what might be foreground and background based on colors and motion, but stuff like that never really worked well.
You can however watch actual 3D movies in stereo with vorpX (and of course also normal movies in 2D). The best players for that are VLC and MPC-HC, for those vorpX has its own profiles.