It is not true that computers with powerful chips are required. The video data size is the same as for 2D video. But what is important is the 2 different formats of 3D video - so my suggested descrpition is:
3D
Enhances the illusion of depth perception by presenting a different image to each eye.
Sometimes confused with 3d computer rendered graphics (See
3D Computer Generated )which looks like this:
Special eyewear or hardware is needed to view 3D video.
There are 2 main types of 3D video:
Anaglyph which needs red/blue glasses to view.
Side by Side (SBS) which needs a screen or projector that supports this and polarizing or shutter glasses.
There are also autostereoscopic screens available that do not require glasses.
There are screens available that will convert any 2D video into 3D so that any video can have a 3D effect.
The best 3D video is that which is made using 3D cameras rather than converting 2D video to 3D. The 3D effect is best when there is a large depth of field (everything is in focus with nothing blurred) as you eyes are then free to wander around. Blurred out of focus areas that are present in most 2D video backgrounds when converted to 3D reduce the effect and also effect your eyes as they try unsuccessfully to bring the blurred area into focus.