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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 a result, the DVD specification provided a storage capacity of 4.7 GB (4.38 GiB) [a] for a single-layered, single-sided disc and 8.5 GB (7.92 GiB) for a dual-layered, single-sided disc. [23] The DVD specification ended up similar to Toshiba and Matsushita's Super Density Disc, except for the dual-layer option.
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)
The DVD format, developed by Panasonic, Sony, and Toshiba, was released in 1995, and was capable of holding 4.7 GB per layer; with the first DVD players shipping on November 1, 1996, by Panasonic and Toshiba in Japan and the first DVD-ROM compatible computers being shipped on November 6 of that year by Fujitsu. [58]
Blu-ray and HD DVD players became commercially available starting in 2006. In early 2008, the war ended when several studios and distributors shifted to Blu-ray disc. [1] On February 19, 2008, Toshiba officially announced that it would stop the development of the HD DVD players, conceding the format war to the Blu-ray Disc format. [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 ...
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DVD capacity Diameter Disk Type Data sectors (2,048 B each) Capacity cm Bytes MB GB; 12 DVD-R, DVD-RW (SS-SL): 2,298,496: 4,707,319,808: 4489.250: 4.7 DVD+R, DVD+RW ...