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DVD included for comparison Mandatory codecs must be supported by the player. Each disc must use one or more of the mandatory codecs. Ultra HD Blu-ray Blu-ray Disc HD DVD CBHD AVCHD AVCREC DVD; Laser wavelength: 405 nm (blue-violet laser) 405 or 650 nm 650 nm (red laser) Numerical aperture: 0.85 0.65 0.85 or 0.6 0.6 Storage capacity (single side)
DVDs offer significantly higher storage capacity than compact discs (CD) while having the same dimensions. A standard single-layer DVD can store up to 4.7 GB of data, a dual-layer DVD up to 8.5 GB. Variants can store up to a maximum of 17.08 GB. [11] Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the ...
HD DVD-R is the writable disc variant of HD DVD, available with a single-layer capacity of 15 GB or a dual-layer capacity of 30 GB. [95] Write speeds depend on drive speed, with a data rate of 36.55 Mbit/s (4.36 MB/s) and a recording time of 56 minutes for 1× media, and 73 Mbit/s (8.71 MB/s) and a recording time of 28 minutes for 2×.
As of 2007 DVD is the de facto standard for pre-recorded movies, and popular storage of data beyond the capacity of CD. With the development of high-definition television , and the popularization of broadband and digital storage of movies, a further format development took place, again giving rise to two camps: HD DVD and Blu-ray , based upon a ...
The HD DVD format, promoted by Toshiba, was backed by the DVD Forum, which voted to make it the official successor to DVD. Opposing HD DVD was the Blu-ray format, led by the Blu-ray Disc Association, which shares many members with the DVD forum. With HD DVD launched in March 2006 and Blu-ray launched in June of the same year, a format war started.
Warner's move was echoed by Walmart's February 15, 2008, decision to phase HD DVD out completely by June 2008. [58] Walmart is the largest DVD retailer in the United States, and its decision prompted the New York Times to run a mock obituary for the HD DVD format. The newspaper quoted technology analyst Rob Enderle's contention that if Walmart ...