 The result was the DVD specification, finalized in 1995.The DVD video format was first introduced in Japan in 1996, later in 1997 in the U.S. as limited test run, then across Europe and the other continents from late 1998 onwards.Blu-ray Disc, yet again primarily developed by Philips and Sony, utilizes blue-violet coloured diodes to create an even shorter wavelength beam than CD or DVD.