The next-generation DVD format war is over, and the future is Blu-ray.
Ever since the two rival high definition DVD systems were launched in 2006 - Sony's Blu-ray and Toshiba's HD DVD - there could only be one winner.
In a re-run of the VHS and Betamax video cassette battle of the early 1980s, each raced to win over both the home consumer and the big Hollywood film studios.
Toshiba's announcement that it is to stop production of HD DVD players leaves the way clear for Blu-ray to become the industry standard.
Yet how did Toshiba fail while Sony succeeded?