I am doing some research in 3D stereo, particularly in 3D videos. I was successful creating 3D photos (using ordinary webcams) and viewing on a 3D laptop and 3D TV, but I've been reading that video recording is not so straightforward. What would be the cheapest way to build a 3D video camera set-up (Rigs, controllers, etc)? I live in India, so buying an expensive rig from abroad may not be possible at the moment. I'm also confused about using genlock cameras or a LANC controller for the video cameras. I currently don't have any video cameras, so which brands would be best to buy to have them in sync? My ultimate goal would be to film a scene 'live' in 3D (under 20 min)

Any help here would be very much appreciated. There's way too much information on the internet! 

Thanks,
Arpita