3D films are motion pictures made to give an illusion of three-dimensional solidity, usually with the help of special viewing devices (glasses worn by viewers). They have existed in some form since 1915, but had been largely relegated to a niche in the motion picture industry because of the costly hardware and processes required to produce and display a 3D film, and the lack of a standardized format for all segments of the entertainment business. (...) Wikipedia

Blu-ray Disc (BD), often known simply as Blu-ray, is a digital optical disc storage format. It is designed to supersede the DVD format, capable of storing several hours of video in high-definition (HDTV 720p and 1080p).  (...) Wikipedia