I would guess since its not possible at all to convert a movie into a real 3D like G3D, vorpX wouldnt be able to do this neither. Ive seen some converted movies, but they were all fake 3D only and not worth looking at. You could try some free software converters from the internet and view them afterwards with a supported movie player, baut as said, in fake 3D only.
RJK_ please give me a link where I download a real 3D movie. Hard to recognize what is fake and what isn’t – only with movies for adults I can clearly to see 3D feeling :)