Jump to content

User:SH4ever/Temp draft HDR: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
Dolby Vision
Dolby Vision
Line 20: Line 20:


== Profiles ==
== Profiles ==

⚫
<ref name=":332" />
{| class="wikitable"
{| class="wikitable"
⚫
|+Dolby Vision profiles <ref name=":332" />
|+
!Profile
!Profile
!Codec
!Codec
Line 61: Line 61:
|}
|}
{| class="wikitable mw-collapsible mw-collapsed"
{| class="wikitable mw-collapsible mw-collapsed"
|+Profiles not supported for new applications
|+Profiles not supported for new applications <ref name=":332" />
!Profile
!Profile
!Codec
!Codec

Revision as of 21:32, 24 April 2021

Dolby Vision is a set of solutions introduced by Dolby in 2014 for High Dynamic Range (HDR) video creation[1][2], distribution and display. Dolby Vision include dynamic metadata that can adjust the brightness, color and sharpness of each frame of the video to match the display color volume (i.e. the gamut and the maximum and minimum brightness capability). It allow for the creative intents to be preserved on all Dolby Vision compatible displays.

Dolby Vision is capable of a peak brightness up to 10,000 cd/m2 and a color gamut up to Rec. 2020. Content are required to be graded with a peak brightness of at least 1,000 cd/m2 and a color gamut of at least 99% of P3.[3]

[4] [5] [6]

[7] [8] [6]

Metadata

Dolby Vision metadata include[9] :

  • L0 (static): Mastering and target display characteristics
  • L1 (dynamic): Automaticaly generated
  • L2 trims (dynamic): Manually generated per frame or per scene
  • L3 trims (dynamic): Manually generated per frame or per scene (since CMv4.0)
  • L8 trims (dynamic): Manually generated per frame or per scene (since CMv4.0) (equivalent of L2 trims)
  • L5: Timeline aspect ratio description
  • L6 (static and optionnal): MaxCLL and MaxFALL (required for HDR10)
  • L9 (dynamic): Mastering display color primaries (since CMv4.0)

Profiles

Dolby Vision profiles [6]
Profile Codec BL:EL resolution Backward compatibility
4 10-bit HEVC 1:1/4 SDR
5 10-bit HEVC No enhancement layer None
7 10-bit HEVC 1:1/4 for UHD

1:1 for FHD

Ultra HD Blu-ray
8.1 10-bit HEVC No enhancement layer HDR10
8.2 SDR
8.4 HLG
9 10-bit HEVC No enhancement layer SDR
Profiles not supported for new applications [6]
Profile Codec BL:EL resolution Backward compatibility
0 AVC 1:1/4 SDR
1 AVC 1:1 None
2 8-bit HEVC 1:1/4 SDR
3 8-bit HEVC 1:1 None
6 10-bit HEVC 1:1/4 HDR10
8.3 10-bit HEVC No enhancement layer
8.5

Licence

Dolby Vision is a proprietary solution by Dolby.[10] In 2021, compatible color grading systems can create Dolby Vision automatic metadata with no additionnal cost for content creators.[10] A 2,500$ annual licence is required to activate the trims allowing content creators to manualy adjust the video.[10] OEM and manufacturer of a grading, mastering, editorial, or other professional application or device need to apply for a licence.[10]

History and adoption

Displays

  • TV
  • Monitor ?
  • Smartphones

Distribution

Camera

Color grading

Source: [10]

  • Autodesk Lustre
  • Autodesk Flame 2021
  • Blackmagic Design Davinci Resolve
  • Digital Vision Nucoda
  • Filmlight Baselight
  • Grass Valley RIO
  • SGO Mistika

Description 1

Dolby Vision is an HDR format from Dolby Laboratories that can be optionally supported by Ultra HD Blu-ray discs and streaming video services.[11][12] Dolby Vision is a proprietary format and Dolby SVP of Business Giles Baker has stated that the royalty cost for Dolby Vision is less than $3 per TV.[13][14][15] Dolby Vision includes the Perceptual Quantizer (SMPTE ST 2084) electro-optical transfer function, up to 8K resolution, and a wide-gamut color space (ITU-R Rec. BT.2020 in YCBCR or IPTPQc2). Some Dolby Vision profiles allow for 12-bit color depth and 10,000 cd/m2 maximum brightness[16] (as of 2018, according to the Dolby Vision white paper, professional reference monitors, such as the Dolby Vision HDR reference monitor, are currently limited to 4,000 cd/m2 of peak brightness).[17] It can encode mastering display colorimetry information using static metadata (SMPTE ST 2086) but also provide dynamic metadata (SMPTE ST 2094-10, Dolby format) for each scene[18] or frame, like on iPhone 12.[citation needed]

Examples of Ultra HD (UHD) TVs that support Dolby Vision include LG, TCL, VU, Sony and Vizio.[19] MulticoreWare's x265 encoder supports Dolby Vision as of version 3.0.[20] Dolby Vision IQ is an update designed to optimise Dolby Vision content according to the ambient light.[21] It is considered to be future proof.[22]

This dynamic metadata or Dynamic HDR allows adjusting of brightness and contrast (in reality, the tone curve) on the scene by scene or even frame by frame bases as and when required and adjusts it many times during the video/movie.[23]

Description 2

Dolby Vision is a content mastering and delivery format similar to the HDR10 media profile. It supports both high dynamic range (HDR) and wide color gamut (ITU-R Rec. 2020 and 2100) at all stages from content creation and production to transmission and playback. Dolby Vision includes the Perceptual Quantizier (SMPTE ST-2084) electro-optical transfer function and supports displays with up to 10,000-nit maximum brightness (4,000-nit in practice). It also provides up to 8K resolution and color depth of up to 12-bits (backward compatible with current 8-bit and 10-bit displays).[24] Dolby Vision can encode mastering display colorimetry information using static metadata (SMPTE ST 2086) and dynamic metadata (SMPTE ST 2094-10, Dolby format) for each scene.[25] Examples of Ultra HD (UHD) Dolby Vision are available in TV, monitor, mobile devices and theater. Dolby Vision content can be delivered on Ultra HD Blu-ray discs,[26][27] over conventional broadcasting, OTT, and online streaming media services.[28] Dolby Vision metadata can be carried via HDMI interface versions 1.4b and above.[29] It also supports IPTPQc2 color space, that is similar to ICtCp. Dolby Vision IQ is an update designed to optimise Dolby Vision content according to the brightness of the room.[30]

References

  1. ^ "Dolby Vision for Content Creators". professional.dolby.com. Retrieved 2021-04-24.
  2. ^ a b "Create in Dolby Vision, now on the full iPhone 12 lineup". professional.dolby.com. Retrieved 2021-04-24.
  3. ^ "Dolby Vision for Content Creators - Workflows". professional.dolby.com. Retrieved 2021-04-24.{{cite web}}: CS1 maint: url-status (link)
  4. ^ Dolby. "Dolby Vision Whitepaper - An introduction to Dolby Vision" (PDF). Retrieved 24 April 2021.{{cite web}}: CS1 maint: url-status (link)
  5. ^ Dolby Laboratories. "Dolby Vision Whitepaper" (PDF). Archived (PDF) from the original on 20 May 2020. Retrieved 24 August 2016.
  6. ^ a b c d Dolby. "Dolby Vision Profiles and Levels Version 1.3.2 - Specification" (PDF). Archived from the original (PDF) on 29 September 2020. Retrieved 12 February 2021.
  7. ^ Dolby. "Dolby Vision Whitepaper - An introduction to Dolby Vision" (PDF). Retrieved 14 February 2021.{{cite web}}: CS1 maint: url-status (link)
  8. ^ Dolby Laboratories. "Dolby Vision Whitepaper" (PDF). Archived (PDF) from the original on 4 June 2016. Retrieved 24 August 2016.
  9. ^ Dolby (23 Jan 2021). "Dolby Vision Metadata Levels". Retrieved 24 April 2021.{{cite web}}: CS1 maint: url-status (link)
  10. ^ a b c d e "Dolby Vision for Content Creators - Solutions". professional.dolby.com. Retrieved 2021-04-24.{{cite web}}: CS1 maint: url-status (link)
  11. ^ Caleb Denison (28 January 2016). "Ultra HD Blu-ray arrives March 2016; here's everything we know". Digital Trends. Archived from the original on 27 July 2016. Retrieved 27 July 2016.
  12. ^ Michael S. Palmer (10 February 2016). "Hands On First Look: Samsung UBD-K8500 Ultra HD Blu-ray Player". High-Def Digest. Archived from the original on 24 July 2016. Retrieved 27 July 2016.
  13. ^ Tim Moynihan (20 January 2016). "What you need to know before buying an HDR TV". Wired. Archived from the original on 2 February 2017. Retrieved 26 January 2017.
  14. ^ Giles Baker (20 September 2016). "Dolby Vision and HDR10: What Format War?". LinkedIn. Archived from the original on 11 November 2020. Retrieved 26 January 2017.
  15. ^ Lee Neikirk (9 September 2016). "Dolby Says The "HDR Format War" Doesn't Exist". Reviewed.com. Archived from the original on 23 January 2021. Retrieved 26 January 2017.
  16. ^ "Archived copy" (PDF). Archived (PDF) from the original on 1 January 2019. Retrieved 23 May 2019.{{cite web}}: CS1 maint: archived copy as title (link)
  17. ^ Dolby Laboratories. "Dolby Vision Whitepaper" (PDF). Archived (PDF) from the original on 4 June 2016. Retrieved 24 August 2016.
  18. ^ "SMPTE ST 2094 and Dynamic Metadata" (PDF). Society of Motion Picture and Television Engineers. Archived (PDF) from the original on 2 February 2017. Retrieved 25 January 2017.
  19. ^ HD Report (19 April 2016). "How To Stream 4k Ultra HD with High Dynamic Range (HDR)". hd-report.com. Archived from the original on 21 August 2016. Retrieved 23 August 2016.
  20. ^ MulticoreWare (23 January 2019). "v3.0 is now out!". x265.org. MulticoreWare. Archived from the original on 23 January 2019. Retrieved 24 January 2019.
  21. ^ January 2020, Becky Roberts 22. "Dolby Vision IQ: everything you need to know". whathifi. Archived from the original on 28 October 2020. Retrieved 19 August 2020.{{cite web}}: CS1 maint: numeric names: authors list (link)
  22. ^ Michael Bizzaco; Ryan Waniata; Simon Cohen (19 December 2020). "HDR TV: What it is and why your next TV should have it". Digital Trends. Designtechnica Corporation. Archived from the original on 21 December 2020. Retrieved 2 January 2021.
  23. ^ Agarwal, Aditya (2020-11-11). "Dolby Vision vs HDR 10 vs HDR 10+ vs HLG vs AHDR Which HDR Should You Get?". Milyin. Archived from the original on 10 November 2020. Retrieved 2021-01-20.
  24. ^ Dolby Laboratories. "Dolby Vision" (PDF). Retrieved 2016-08-24.
  25. ^ "SMPTE ST 2094 and Dynamic Metadata" (PDF). Society of Motion Picture and Television Engineers. Retrieved 2017-01-25.
  26. ^ Caleb Denison (2016-01-28). "Ultra HD Blu-ray arrives March 2016; here's everything we know". Digital Trends. Retrieved 2016-07-27.
  27. ^ 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.
  28. ^ "Dolby Vision". Dolby.com. Retrieved 2012-04-26.
  29. ^ "Dolby Vision FAQ". yoeri.geutskens.com.
  30. ^ January 2020, Becky Roberts 22. "Dolby Vision IQ: everything you need to know". whathifi. Retrieved 2020-08-19.{{cite web}}: CS1 maint: numeric names: authors list (link)


Retrieved from "https://en.wikipedia.org/w/index.php?title=User:SH4ever/Temp_draft_HDR&oldid=1019693626"