Blu-ray Disc

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The '''Blu-ray Disc''' is an optical disc type primarily used for videos, created as a higher-capacity successor to the [[DVD]]. For a time it was in a format war with [[HD-DVD]], ultimately winning out, but this victory came in a time when physical media were in decline in favor of streaming and downloads through networks as the preferred means of content distribution. This has slowed the adoption of Blu-ray compared to earlier media, but the format is widely supported nevertheless. Netflix has an option to receive Blu-ray Discs instead of DVDs when available, as part of the disc-in-the-mail subscriptions (which continue to have a wide range of material not presently available in streaming subscriptions).
 
The '''Blu-ray Disc''' is an optical disc type primarily used for videos, created as a higher-capacity successor to the [[DVD]]. For a time it was in a format war with [[HD-DVD]], ultimately winning out, but this victory came in a time when physical media were in decline in favor of streaming and downloads through networks as the preferred means of content distribution. This has slowed the adoption of Blu-ray compared to earlier media, but the format is widely supported nevertheless. Netflix has an option to receive Blu-ray Discs instead of DVDs when available, as part of the disc-in-the-mail subscriptions (which continue to have a wide range of material not presently available in streaming subscriptions).
  
Blu-ray Discs can be single-layer (25 GB capacity) or double-layer (50 GB). As with other optical disc types, they can be used for data, games, or audio, but the format is primarily marketed as a medium for video such as movies and TV shows. When used as a computer data storage medium, it may have a [[UDF]] filesystem.
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Blu-ray Discs can be single-layer (25 GB capacity) or double-layer (50 GB). As with other optical disc types, they can be used for data, games, or audio, but the format is primarily marketed as a medium for video such as movies and TV shows. When used as a computer data storage medium, it may have a [[Universal Disk Format|UDF]] filesystem.
  
 
The archival-quality [[M-Disc]] is available in BluRay form as well as DVD.
 
The archival-quality [[M-Disc]] is available in BluRay form as well as DVD.

Revision as of 00:43, 12 May 2015

File Format
Name Blu-ray Disc
Ontology
Released 2006

The Blu-ray Disc is an optical disc type primarily used for videos, created as a higher-capacity successor to the DVD. For a time it was in a format war with HD-DVD, ultimately winning out, but this victory came in a time when physical media were in decline in favor of streaming and downloads through networks as the preferred means of content distribution. This has slowed the adoption of Blu-ray compared to earlier media, but the format is widely supported nevertheless. Netflix has an option to receive Blu-ray Discs instead of DVDs when available, as part of the disc-in-the-mail subscriptions (which continue to have a wide range of material not presently available in streaming subscriptions).

Blu-ray Discs can be single-layer (25 GB capacity) or double-layer (50 GB). As with other optical disc types, they can be used for data, games, or audio, but the format is primarily marketed as a medium for video such as movies and TV shows. When used as a computer data storage medium, it may have a UDF filesystem.

The archival-quality M-Disc is available in BluRay form as well as DVD.

Blu-Ray video uses the M2TS format, with MPLS playlists, CLPI clip info files, and BDMV files for user interactivity. Subdirectories named BDMV and CERTIFICATE are used at the root level.

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