The Blu-ray format has gained the upper hand in the battle for next-generation DVD supremacy.
Blu-ray will enjoy exclusive support from four of the six major Hollywood movie studios, with only Universal Pictures and Paramount Pictures supporting HD-DVD.
The battle between the two incompatible DVD formats is often dubbed as a 'replay' of the VHS-Betamax battle between two types of video cassette tape in the late 1970s.
