HDR10+

HDR10+[1] is a High Dynamic Range (HDR) video technology that adds dynamic metadata[2] to HDR10 source files. HDR10+ signals the dynamic range and scene characteristics on a scene-by-scene or even frame-by-frame basis. The display device then uses the dynamic metadata to apply an appropriate tone map through the process of dynamic tone mapping[3]. Dynamic tone mapping differs from static tone mapping by applying a different tone curve from scene-to-scene rather than use a single tone curve for an entire video.[4] HDR10+ is the default variant of dynamic metadata as part of the HDMI 2.1 standard (in Amendment 1 of it).

Workflow and ecosystem
HDR10+ Distribution Ecosystem

HDR10+ utilizes an HDR10 master file within existing HDR post-production and distribution workflows.

The HDR10+ ecosystem is used within current systems by,

  • storing HDR10+ metadata in JSON files
  • embedding HDR10+ metadata into HDR10 encoded content
  • distribution through digital stream (e.g. streaming with HDR10+ SEI[5])
  • displaying HDR10+ content on a capable display (e.g. HDMI interfaces with HDR10+ VSIF) and mobile devices [6] 

Metadata generation
HDR10+ Metadata Workflow

For offline and Video-On-Demand (VOD) (e.g. Ultra-High Definition Blu-ray, Over-The-Top (OTT), Multi-Channel Video Programming Distributor (MVPD)), HDR10+ Metadata may be created during the post-production, mastering process or during transcoding/encoding for distribution back-ends by HDR10+ content generation tools in two steps,

  1. Identifying scene cuts, and
  2. Performing an image analysis on each scene or frame to derive statistics

HDR10+ metadata is interchanged through a low complexity JSON-structured text file[7], which is then parsed and injected into video files.

Live Encoding
HDR10+ Live Encoder Workflow

Live use cases are possible by delivering HDR10+ metadata in every frame. HEVC encoders generate and inject metadata on live content and mobile phones record video and create HDR10+[8] metadata in real-time during recording. Live encoding is detailed in the Live Encoder Workflow diagram and real time broadcast operations are supported at the point of transmission enabling a metadata-less broadcast operation.

Compatibility
HDR10+ Backward Compatibility

HDR10+ metadata follows ITU-T T.35 and can co-exist with other HDR metadata such as HDR10 static metadata that makes HDR10+ content backward compatible[9] with non-HDR10+ TVs. HDR10+ metadata is ignored by devices that do not support the format and video is played back in HDR10.

HDR10+ content profile
  • EOTF: SMPTE ST 2084 (PQ)
  • Chroma Sub-sampling: 4:2:0 (for compressed video sources)
  • Resolution: Agnostic (2K/4K/8K[10], etc.)
  • Bit Depth: 10-bit or more (up to 16-bit)
  • Color Primaries: ITU-R BT.2020
  • Maximum linearized pixel value: 10,000 cd/m2 for each color R/G/B (content)
  • Metadata (Required): Mastering Display Color Volume Metadata[11]
  • Metadata (Optional): MaxCLL, MaxFALL[12]

HDR10+ technology can support the full range of HDR standards to 10,000 cd/m2, 8K and BT.2020 color gamut. Being resolution agnostic, metadata needs to be created only once and can be applied to any target resolution.

HDR10+ is applicable for HEVC and VP9 compatibility via WebM[13] as well as any codec that supports ITU-T T.35 metadata.

Administration
HDR10+ Logo

HDR10+ Technologies, LLC[14] administers the license and certification program for products that want to adopt HDR10+. HDR10+ Technologies, LLC provides the technical specifications, test specifications, and certified logo.

Founders

[15]

Authorized Test Centers

Certification of products is done through Authorized Test Centers. The following are a list of HDR10+ Authorized Test Centers,

Adopters[16]
Amazon Evertz AV Panasonic Corporation Telechips
Amlogic (Shanghai) Co., Ltd. Extron Electronics Parade Technologies, Inc. Teledyne LeCroy
Andy Fiord Production Company FF Pictures GmbH Pixelogic Media Partners LLC TFI Digital Media
Arcelik Fidelity in Motion Pixelworks, Inc. Top Victory Electronics -TPV
Arm Limited Giant Interactive Pixtree, Inc. Toshiba Visual Solutions Corp
Astro Design Grass Valley K.K. production studio Arspro Turbine Medien GmbH
ATEME SA Guangdong Oppo Mobile Qualcomm Twentieth Century Fox Film Corp
Audio Partnership PLC Interra Systems Rakuten TV Unigraf Oy
Beijing Xiaomi Mobile Software Inventory Films Realme Chongqing Mobile US Screen Corp
Blackmagic Design Technology Pte Ltd Ivi.ru LLC Realtek Semiconductor Corp. V-Silicon Inc.
Blackshark Technologies JVCKENWOOD Corp Rohde & Schwarz GmbH & Co. KG Venera Technologies
Broadcom Loewe Technologies GmbH Samsung Research America VeriSilicon, Inc
Capella Systems Lussier Shenzhen SDMC Technology Co., Ltd Vestel Elektronik
Chrontel MediaArea.net Shenzhen TCL New Technolog Co., Ltd. Vicom
Colorfront Media Tek Inc. Shenzhen Zidoo Technology Co., Ltd. VideoQ
Crestron Electronics MegaChips Technology America Shout! Factory LLC Visible Light Digital Inc
Dalet UK Ltd. Megogo LLC Sirius Pixels Vivo Mobile Communications
Deluxe Entertainment Services Group MTI Film Socionext, Inc. Vizio
Digital Vision Novatek Microelectronics Corp Spears & Munsil Warner Bros. Entertainment
DTS, Inc. Omnitek Spin Digital Video Technologies GmbH Weka Media Publishing
Encoding.com Inc. OnePlus Technology (Shenzhen) Co., Ltd Synaptics, Inc. Xi'an NovaStar Tech Co., Ltd.
Enteractive GmbH Onkyo Corporation T1 Technologies Yamzz IP BV
EON 247, A Public Benefit Corporation Oppo Digital, Inc. Tatung Technology Inc.

HDR10+ certified products

Certified product[17] categories include:

  • Ultra-High Definition displays
  • Ultra-High Definition Blu-ray disc players
  • Systems-on-chip (SoC)
  • Set-top boxes
  • A/V Receivers
  • Streaming applications
  • Mobile devices

References
  1. "What is HDR10+? What you need to know". Trusted Reviews. 2019-05-21. Retrieved 2019-09-16.
  2. "Understanding Dynamic Metadata". Creative Planet Network. 2016-11-30. Retrieved 2019-09-16.
  3. Werner, Ken (2017-02-16). "Two Keys to Optimal HDR TVs: Dynamic HDR Metadata and Tone Mapping". DisplayDaily. Retrieved 2019-09-16.
  4. "What is 4K HDR Dynamic Metadata?". AVForums. Retrieved 2019-11-19.
  5. "SEI messages | MPEG". mpeg.chiariglione.org. Retrieved 2019-09-05.
  6. Katzmaier, David. "Galaxy S10 screen deep dive: Dynamic AMOLED, HDR10+, explained". CNET. Retrieved 2019-09-16.
  7. "Transkoder 2018: User Guide". www.colorfront.com. Retrieved 2019-11-19.
  8. HDR10+ Video Recording on Your Galaxy S10, retrieved 2019-09-16
  9. "Are You Ready for Your HDR Delivery?". Studio Daily. 2018-12-19. Retrieved 2019-11-19.
  10. "Samsung brings its HDR10+ tech to 8K TVs". Engadget. Retrieved 2019-09-16.
  11. Mastering Display Color Volume Metadata Supporting High Luminance and Wide Color Gamut Images. doi:10.5594/SMPTE.ST2086.2018. ISBN 978-1-68303-139-0.
  12. Turner, Paul. "HDR: Standards, Standards, Everywhere". TvTechnology. Retrieved 2019-11-19.
  13. "The WebM Project | VP9 Video Codec Summary". www.webmproject.org. Retrieved 2019-09-05.
  14. "HDR10+".
  15. "HDR10+ Technologies, LLC, Founded by 20th Century Fox, Panasonic and Samsung, Welcomes First Adopters of HDR10+ Technology". www.businesswire.com. 2018-08-28. Retrieved 2019-09-05.
  16. "Adopters - HDR10+". hdr10plus.org. Retrieved 2019-09-05.
  17. "HDR10+ Certification Begins This Month, Brings the Tech to More TVS". www.digitaltrends.com. 2018-06-21. Retrieved 2019-09-16.
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