15 Facts About Blu-ray Disc


Blu-ray Disc, often known simply as Blu-ray, is a digital optical disc data storage format.

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The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of video games for the PlayStation 3, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X The name "Blu-ray" refers to the blue laser used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs.

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The first Blu-ray Disc player was perceived as expensive and buggy, and there were few titles available.

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The 360's successor Xbox One features a Blu-ray Disc drive, as does the PS4, with both supporting 3D Blu-ray Disc after later firmware updates.

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The Ultra HD Blu-ray Disc format delivered high dynamic range content that significantly expanded the range between the brightest and darkest elements, expanded color range, high frame rate and up to 3840×2160 resolution, object-based sound formats, and an optional "digital bridge" feature.

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The shorter wavelength can be focused to a smaller area, thus enabling it to read information recorded in pits that are less than half the size of those on a DVD, and can consequently be spaced more closely, resulting in a shorter track pitch, enabling a Blu-ray Disc to hold about five times the amount of information that can be stored on a DVD.

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Blu-ray Disc specification requires the testing of resistance to scratches by mechanical abrasion.

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Usable data rate of a Blu-ray Disc drive can be limited by the capacity of the drive's data interface.

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Recordable and rewritable versions of Mini Blu-ray Disc have been developed specifically for compact camcorders and other compact recording devices.

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Blu-ray Disc titles authored with menus are in the BDMV format and contain audio, video, and other streams in BDAV container.

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Blu-ray Disc allows video with a bit depth of 8-bits per color YCbCr with 4:2:0 chroma subsampling.

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Blu-ray Disc format employs several layers of digital rights management which restrict the usage of the discs.

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Blu-ray Disc equipment is required to implement the High-bandwidth Digital Content Protection system to encrypt the data sent by players to rendering devices through physical connections.

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Blu-ray Disc Association recommends but does not require that Blu-ray Disc drives be capable of reading standard DVDs and CDs, for backward compatibility.

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Blu-ray Disc Association created a task force made up of executives from the film industry and the consumer electronics and IT sectors to help define standards for putting 3D film and 3D television content on a Blu-ray Disc.

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