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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 Mbit/s)
66 GB (dual-layer,[1] 108 Mbit/s)
100 GB (triple-layer,[1] 128 Mbit/s)
Block size2 KB sector, 64 KB block size[1]
Read mechanismDiode laser
Developed byBlu-ray Disc Association
Dimensions120 mm (4.7 in) diameter
UsageUltra-high-definition video
Released1 March 2016; 3 years ago (2016-03-01)

Ultra HD Blu-ray is a digital optical disc data storage format that supersedes Blu-ray.[2] Ultra HD Blu-ray discs are incompatible with existing Blu-ray players.[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.


The specification allows for three disc capacities, each with its own data rate: 50 GB with 82 Mbit/s, 66 GB with 108 Mbit/s, and 100 GB with 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.

On May 12, 2015, the Blu-ray Disc Association revealed completed specifications and the official Ultra HD Blu-ray logo.[3] Unlike conventional DVDs and Blu-rays, the new 4K format does not have region coding.[4]

On March 1, 2016, the BDA released Ultra HD Blu-ray with mandatory support for HDR10 Media Profile video and optional support for Dolby Vision.[5][6]

As of January 23, 2018, the BDA spec v3.2 also includes optional support for HDR10+ and Philips/Technicolor’s SL-HDR2.[7]

Initial titles[edit]

Early 4K Blu-ray release at Best Buy.

The first Ultra HD 4K Blu-ray Discs were officially released from four studios on March 1, 2016.[8]:

The first Ultra HD 4K Blu-ray Discs officially released from other studios after March 1, 2016:


  1. ^ a b c d e "White Paper: Blu-ray Disc™ Format" (PDF). (4th ed.). 2015. Retrieved 2016-12-28.
  2. ^ a b c d e "4K Blu-ray discs arriving in 2015 to fight streaming media". CNET. September 5, 2014. Retrieved October 18, 2014.
  3. ^ "Blu-ray Disc Association Completes Ultra HD Blu-ray™ Specification and Releases New Logo - Business Wire". May 12, 2015. Retrieved October 28, 2015.
  4. ^ Michael S. Palmer (2015-10-07). "Everything We Know About Ultra HD Blu-ray". High-Def Digest. Retrieved 2016-12-26.
  5. ^ Caleb Denison (2016-01-28). "Ultra HD Blu-ray arrives February 2016; here's everything we know". Digital Trends. Retrieved 2016-07-27.
  6. ^ Michael S. Palmer (2016-02-10). "Hands On First Look: Samsung UBD-K8500 Ultra HD Blu-ray Player". High-Def Digest. Retrieved 2016-07-27.
  7. ^ "Blu-ray Disc Association – Update – 1/12/2018". From Vinyl to Plastic. 2018-01-12. Retrieved 2018-01-12.
  8. ^ "Upcoming Fox 4K Blu-ray Titles". Retrieved 12 January 2016.
  9. ^ Thomas K. Arnold (2016-01-06). "Dolby Collaborates on 4K Ultra HD Movies from Sony, MGM, Uni". Variety. Retrieved 2016-12-26.
  10. ^ Steven Cohen (2016-01-13). "Lionsgate Reveals Ultra HD Blu-ray Launch Titles, Release Date Set for March 1". High-Def Digest. Retrieved 2016-12-26.
  12. ^ "4k Ultra HD Blu-ray Titles from Fox Show Up on Amazon". Retrieved 2016-12-26.
  13. ^ "Paramount Announces First 4K Blu-ray Titles".
  14. ^ "Universal Releases 3 Feature Films To 4k Ultra HD Blu-ray".
  15. ^ "Sammi Cheng Touch Mi 2 world tour 4K Blu-ray". Retrieved 2017-06-28.
  16. ^ 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 July 4, 2017.
  17. ^ 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 July 4, 2017.


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