Ultra HD Blu-ray
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Ultra HD Blu-ray
Ultra HD Blu-ray
Ultra HD Blu-ray (logo).svg
Media typeHigh-density optical disc
EncodingH.265/MPEG-H Part 2 (HEVC)
Capacity50 GB (dual-layer,[1] 82 Mb/s)
66 GB (dual-layer,[1] 108 Mb/s)
100 GB (triple-layer,[1] 128 Mb/s)
Blocksize2 KB sector, 64 KB block size[1]
ReadmechanismDiode laser
DevelopedbyBlu-ray Disc Association
Dimensions120 mm (4.7 in) diameter
UsageUltra-high-definition video
ReleasedFebruary 14, 2016; 3 years ago (2016-02-14)

Ultra HD Blu-ray (marketed as 4K Ultra HD) is a digital optical disc data storage format that supersedes Blu-ray.[2] Ultra HD Blu-ray discs are incompatible with existing standard Blu-ray players (though in most cases, a traditional Blu-ray and digital copy has been packaged with the Ultra HD Blu-ray discs).[1] Ultra HD Blu-ray supports 4K UHD (3840 × 2160 resolution) video at frame rates up to 60 frames per second,[2] encoded using High Efficiency Video Coding.[2] The discs support both high dynamic range by increasing the color depth to 10-bit per color and a greater color gamut than supported by conventional Blu-ray video by using the Rec. 2020 color space. It is supported on the Xbox One X,[3]Xbox One S,[4] and Sony's upcoming PlayStation 5.[5]

To differentiate Ultra HD Blu-ray titles on store shelves, the format uses a black opaque or slightly transparent keep case packaging format.


The specification allows for three disc capacities, each with its own data rate: 50 GB at 82 Mbit/s, 66 GB at 108 Mbit/s, and 100 GB at 128 Mbit/s.[2] Ultra HD Blu-ray technology was licensed in mid 2015, and players had an expected release date of Christmas 2015.[2] Ultra HD Blu-ray uses a new revision of AACS DRM, AACS 2. And AACS 2.1 on certain titles (Stand By Me, Fury, The Patriot, Zombieland).

On May 12, 2015, the Blu-ray Disc Association revealed completed specifications and the official Ultra HD Blu-ray logo.[6] Unlike conventional DVDs and Blu-rays, the new 4K format does not have region coding.[7]

On February 14, 2016, the BDA released Ultra HD Blu-ray with mandatory support for HDR10 Media Profile video and optional support for Dolby Vision.[8][9]

As of January 23, 2018, the BDA spec v3.2 also includes optional support for HDR10+ and Philips/Technicolor's SL-HDR2.[10]

Initial titles

Early 4K Blu-ray display at Best Buy

The first Ultra HD Blu-ray Discs were officially released from four studios on February 14, 2016:[11]

The first Ultra HD Blu-ray Discs officially released from other studios after February 14, 2016:


  1. ^ a b c d e "White Paper: Blu-ray Disc(TM) Format" (PDF). Blu-RayDisc.com (4th ed.). 2015. Retrieved .
  2. ^ a b c d e "4K Blu-ray discs arriving in 2015 to fight streaming media". CNET. September 5, 2014. Retrieved 2014.
  3. ^ Warren, Tom (June 11, 2017). "Xbox One X is Microsoft's next game console, arriving on November 7th for $499". The Verge. Vox Media. Retrieved 2019.
  4. ^ Webster, Andrew (June 13, 2016). "Microsoft announces the Xbox One S, its smallest Xbox yet". The Verge. Vox Media. Retrieved 2019.
  5. ^ Rubin, Peter (October 8, 2019). "Exclusive: A Deeper Look at the PlayStation 5". Wired. Retrieved 2019.
  6. ^ "Blu-ray Disc Association Completes Ultra HD Blu-ray(TM) Specification and Releases New Logo - Business Wire". BusinessWire.com. May 12, 2015. Retrieved 2015.
  7. ^ Michael S. Palmer (2015-10-07). "Everything We Know About Ultra HD Blu-ray". High-Def Digest. Retrieved .
  8. ^ Caleb Denison (2016-01-28). "Ultra HD Blu-ray arrives February 2016; here's everything we know". Digital Trends. Retrieved .
  9. ^ Michael S. Palmer (2016-02-10). "Hands On First Look: Samsung UBD-K8500 Ultra HD Blu-ray Player". High-Def Digest. Retrieved .
  10. ^ "Blu-ray Disc Association - Update - 1/12/2018". From Vinyl to Plastic. 2018-01-12. Retrieved .
  11. ^ "Upcoming Fox 4K Blu-ray Titles". Blu-ray.com. Retrieved 2016.
  12. ^ Thomas K. Arnold (2016-01-06). "Dolby Collaborates on 4K Ultra HD Movies from Sony, MGM, Uni". Variety. Retrieved .
  13. ^ Steven Cohen (2016-01-13). "Lionsgate Reveals Ultra HD Blu-ray Launch Titles, Release Date Set for March 1". High-Def Digest. Retrieved .
  15. ^ "4k Ultra HD Blu-ray Titles from Fox Show Up on Amazon". Hd-report.com. Retrieved .
  16. ^ "Paramount Announces First 4K Blu-ray Titles".
  17. ^ "Universal Releases 3 Feature Films To 4k Ultra HD Blu-ray".
  18. ^ "Sammi Cheng Touch Mi 2 world tour 4K Blu-ray". bluray.com. Retrieved .
  19. ^ Landy, Tom (July 4, 2017). "James Gunn's 'Guardians of the Galaxy Vol. 2' Blu-ray and 4K Ultra HD Blu-ray Coming in August". High-Def Digest. Archived from the original on July 4, 2017. Retrieved 2017.
  20. ^ Katzmeier, David (June 9, 2017). "'Guardians of the Galaxy 2' could be Disney's first 4K Blu-ray". CNET. Archived from the original on July 4, 2017. Retrieved 2017.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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