Blu-ray 3D format
The Blu-ray 3D format extends Blu-ray Discs to support 3D video. When played on appropriate hardware (a 3D-supporting TV hooked up to a 3D-capable Blu-ray player) it displays two images superimposed in a way that can be filtered by 3D glasses so the viewer sees a different image in each eye.
The encoding uses Multiview Video Coding (MVC), an extension of the H.264/AVC standard. It encodes a primary video stream (the regular 2D video; this is played when the disc is played on non-3D-capable systems, as well as being one channel of the 3D video, so 2D compatibility is maintained) and a Dependent View encoding, in a compressed form, the differences in the 3D stream from the primary stream.