IEC TR 63274:2021

IEC TR 63274 ®
Edition 1.0 2021-03
TECHNICAL
REPORT
colour
inside
Power consumption of high dynamic range television sets

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IEC TR 63274 ®
Edition 1.0 2021-03
TECHNICAL
REPORT
colour
inside
Power consumption of high dynamic range television sets

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.40 ISBN 978-2-8322-9512-0

– 2 – IEC TR 63274:2021 © IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative reference . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 11
4 Overview . 12
4.1 High dynamic range video . 12
4.2 HDR TV market . 13
5 HDR TV power measurement challenges . 14
5.1 Overview. 14
5.2 Content analysis . 15
5.2.1 General . 15
5.2.2 Sources of HDR video content . 15
5.2.3 HDR metadata . 16
5.2.4 Increased complexity of display technologies enabling HDR . 16
5.3 HDR video content aspects beyond the scope of this report . 16
6 Dominant aspects for HDR TV power consumption measurement . 17
6.1 Overview. 17
6.2 Fundamental criteria and requirements for Final HDR Test Clip deliverable . 18
6.3 HDR media formats . 19
6.4 Differences between HDR formats . 19
6.5 Mastering display brightness . 21
6.6 Resolution, scan type and frame rate . 22
6.7 Aspect ratio . 22
6.8 Picture level . 23
6.9 Content signal level analysis method . 23
7 Fundamental objectives of HDR test clip deliverable . 24
7.1 Overview. 24
7.2 CLASP source material . 24
7.3 Luminance, APL and colour saturation properties . 24
7.4 Order of scenes . 25
7.5 Creating the initial HDR test clip . 26
7.6 Optimization of initial HDR test clip to match power statistics . 27
8 Generation of the final HDR test clips . 28
8.1 HDR signal properties . 28
8.1.1 Overview . 28
8.1.2 Colour gamut . 28
8.1.3 Colour depth . 28
8.1.4 Chroma subsampling . 29
8.2 Converting the optimised test clip to the recommended formats . 29
8.3 Additional elements . 29
8.3.1 Countdown timer . 29
8.3.2 Audio tone . 29
9 Delivery of test media . 29

10 Rating of SD and HDR power consumption . 30
11 Summary . 30
Annex A (informative) Other considerations for a next-generation TV power
measurement standard . 32
A.1 Overview. 32
A.2 Visual overlays . 32
A.3 Motion-based features . 32
A.4 Standby modes and smart television set features . 32
A.4.1 Quick start . 32
A.4.2 Networked standby features . 33
A.4.3 Smart TV applications . 33
A.5 Audio . 33
Annex B (informative) Details on content assessment methods . 34
B.1 Overview. 34
B.2 Methods for analysis done by PCL on December 20, 2018 . 34
B.2.1 General . 34
B.2.2 Test method . 34
B.2.3 File name decoder . 34
B.2.4 Workflow for experimental test clips . 35
B.3 Methods for analysis done by PCL on March 20, 2019 . 38
B.4 Rendering final test clip from DaVinci Resolve Studio 15 . 38
B.4.1 HDR10 workflow . 38
B.4.2 HLG workflow . 40
Annex C (informative) Technical description for converting SMPTE ST 2084 to HLG . 42
C.1 Overview. 42
C.2 Step 1: Convert from SMPTE ST 2084 to absolute linear light . 42
C.3 Step 2: convert from absolute linear light to HLG . 42
C.4 Encoding using command line tools . 44
C.4.1 General . 44
C.4.2 25 fps HDR10 CLI Encode via FFmpeg . 44
C.4.3 25 fps HLG CLI Encode via FFmpeg . 45
Bibliography . 46

Figure 1 – Occurrence of linear and non-linear signal encodings in context of a typical
display processing pipeline and how they can be used to compute APL and APL’ . 10
Figure 2 – Overview of how the deliverables were developed. 17
Figure 3 – Illustration on editing the initial HDR test clip from the CLASP source
material . 27
Figure 4 – Optimization of initial HDR test clip to match power statistics . 27
Figure 5 – Average power consumption of protected HDR content versus optimized
HDR test clip . 28

Table 1 – Fundamental HDR test media format summary . 19
Table 2 – HDR media formats available in the consumer TV landscape . 19
Table 3 – Comparison of HDR media formats on the power consumption (W) of TVs . 21
Table 4 – Power consumption (W) of TVs displaying the colour graded Initial HDR test clip . 21
Table 5 – Power consumption (W) of TVs displaying the assessment HDR video
content in different resolutions . 22

– 4 – IEC TR 63274:2021 © IEC 2021
Table 6 – Power consumption (W) of TVs displaying the assessment HDR video
content with different frame rates . 22
Table 7 – Recommended scene order in the test clip . 25
Table B.1 – Characteristics of TVs of the NEEA test farm used for the March 20, 2019
analysis . 34
Table B.2 – File name decoder . 35
Table B.3 – Workflow . 35
Table B.4 – Resolve master session: PCL Dolby Vision® 4000 cd/m . 36
Table B.5 – Resolve master session: PCL HDR10 1000 nit: HDR10 grade . 36
Table B.6 – Resolve master session: HLG1 . 37
Table B.7 – Resolve master session: HLG2 . 37
Table B.8 – Characteristics of TVs of the NEEA test farm used for the March 20, 2019
analysis . 38

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER CONSUMPTION OF HIGH DYNAMIC
RANGE TELEVISION SETS
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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example "state of the art".
IEC TR 63274, which is a Technical Report, has been prepared by Technical Area 19:
Environmental and energy aspects for multimedia systems and equipment, of IEC technical
committee 100: Audio, video and multimedia systems and equipment.
The text of this Technical Report is based on the following documents:
DTR Report on voting
100/3348/DTR 100/3397/RVDTR
Full information on the voting for the approval of this Technical Report can be found in the
report on voting indicated in the above table.

– 6 – IEC TR 63274:2021 © IEC 2021
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INTRODUCTION
High dynamic range (HDR) video is emerging as a new technology that affects the entire video
ecosystem from production and processing, through to distribution and presentation. HDR
television sets potentially have higher peak luminance level capabilities, and HDR video signals
can represent pictures with much higher luminance levels than was the case in traditional
analogue and digital video systems.
Current television set power consumption measurement methods, including those standardized
in the IEC 62087 series (see [1] , [2]and [3]), consider only televisions that accept a traditional,
standard dynamic range (SDR) signal. It is likely that an HDR-capable television’s power
consumption will differ when presented with an HDR signal versus an SDR signal.
IEC TC100 TA19 has identified a standardization opportunity related to the method of
measuring the power consumption of HDR television sets, including the development of a
related HDR test signal.
This document assesses the current HDR technology for the parameters relevant for TV power
consumption and sets the groundwork for the subsequent development of a measurement
standard for the power consumption of HDR TV sets.

_____________
Numbers in square brackets refer to the Bibliography.

– 8 – IEC TR 63274:2021 © IEC 2021
POWER CONSUMPTION OF HIGH DYNAMIC
RANGE TELEVISION SETS
1 Scope
This document introduces high dynamic range video technology, describes current television
set power consumption measurement methods, discusses the HDR TV market, analyses HDR
TV power measurement challenges, and considers a path forward for HDR TV power
measurement standards development.
2 Normative reference
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
For the purposes of this document, the terms and definitions given in the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1 Terms and definitions
3.1.1
electro-optical transfer function
EOTF
mathematical function for transferring an electrical signal into a desired optical signal
EXAMPLE EOTFs are typically non-linear and monotonic and aim to incorporate behaviour of the human visual
system, e.g. on a display device. Some are absolute, addressing luminance values directly, while others are of
relative nature.
3.1.2
high dynamic range video
HDR video
capability of components in a video pipeline to capture, process, transport or display luminance
levels and tone gradations that exceed capabilities of conventional SDR imaging pipelines
components
Note 1 to entry: An HDR video signal typically uses a greater bit depth, luminance and colour volume than standard
dynamic range (SDR) video. It also typically utilizes different tone curves such as perceptual quantizer (PQ) as
specified in SMPTE ST 2084 [4] or hybrid log gamma (HLG) specified in ITU-R BT.2100 [5] instead of gamma, as
used with SDR. When the HDR video signal is rendered on an HDR display, it is possible to see greater luminance
ranges and wider colour gamuts
Note 2 to entry: HDR video can provide an enhanced viewer experience and can more accurately reproduce scenes
that include, within the same image, dark areas and bright highlights, such as emissive light sources and reflections.

3.1.3
standard dynamic range video
SDR video
capability of components in a video pipeline to capture, process, transport or display luminance
levels and tone gradations that can be characterized by the dynamic range, colour rendering
and tone gradation capabilities essentially compatible with cathode ray tube (CRT) displays
EXAMPLE ITU-R BT.709 [6]/BT.1886 [7] and IEC 61966-2-1 (sRGB) [8]
2 2
Note 1 to entry: The luminance range of an SDR image is typically constrained between 0,1 cd/m to 100 cd/m .
3.1.4
wide colour gamut
WCG
colour space that covers a larger percentage of visible colours compared to the sRGB/Rec.
ITU-R BT.709 colour space
EXAMPLE ITU-R BT.2020 [9] is considered to provide WCG while BT.709 [6] does not.
3.1.5
television set
TV
equipment for the reception and display of television broadcast and similar services for
terrestrial, cable, satellite and broadband network transmission of analogue and/or digital
signals
Note 1 to entry: A television set can include additional functions that are not required for its basic operation.
[SOURCE: IEC 62087-3:2015, 3.1.19]
3.1.6
high definition
HD
spatial video resolution ranging from 1 280 × 720 to 1 920 × 1 080
3.1.7
ultra high definition
UHD
Ultra HD
spatial video resolution above 1 920 × 1 080
3.1.8
signal identification metadata
identifiers describing the properties of an image stream
EXAMPLE Format, resolution, colour space, chroma subsampling, bit-depth, image compression, image transport.
3.1.9
image-related metadata
identifiers describing intrinsic image properties in form of both static metadata valid throughout
the content and dynamic metadata for frame-specific image parameters
EXAMPLE 1 Minimum and maximum luminance, average picture level, properties of the grading display.
EXAMPLE 2 HDR image related static metadata are MaxCLL and MaxFall as specified in CTA-861-G [10], section
6.9.1 and Appendix P, sections P.1 and P.2 for algorithms to calculate each.
EXAMPLE 3 Dynamic metadata is utilized by Dolby Vision® (SMPTE ST 2094-10 [11]) and HDR10+
(SMPTE ST 2094-40 [12]).
Note 1 to entry: They can be used as recommendations and guidance for image rendering and display.

– 10 – IEC TR 63274:2021 © IEC 2021
3.1.10
average picture level
APL
average level of all the pixels of a single video signal frame in the linear luminance domain
EXAMPLE Display equipment such as television sets or computer monitors that internally use linear encoding after
undoing the non-linearity of the input signal.
3.1.11
average picture level based on non-linear input signal
APL′
average level of all pixels of a single video signal frame in the non-linear luminance domain
EXAMPLE Display equipment such as television sets or computer monitor receive input signals that encode
luminance in a non-linear way. Examples for such non-linear encoding are PQ or HLG EOTFs (ITU-R BT.2100-1) [5].
Note 1 to entry: APL′ is defined as a percentage of the range between reference black and reference white level.
Note 2 to entry: This is not a measure of the linear signal that might be available inside of some display equipment
and delivered to the display device. The external and internal video signals are shown in Figure 1.

Figure 1 – Occurrence of linear and non-linear signal encodings in context of a typical
display processing pipeline and how they can be used to compute APL and APL’
3.1.12
hybrid log-gamma
HLG
one set of transfer functions offering a degree of backwards compatibility by more closely
matching the previously established television transfer curves
Note 1 to entry: Sets of transfer functions related to HDR signals are specified in Rec. ITU-R BT.2100-1.
[SOURCE: ISO/IEC TR 23008-15:2018, 3.4]
3.1.13
perceptual quantizer
PQ
one set of transfer functions addressing a very wide range of absolute luminance levels for a
given bit depth using a non-linear transfer function that is finely tuned to match the sensitivity
of the human visual system
Note 1 to entry: Sets of transfer functions related to HDR signals are specified in Rec. ITU-R BT.2100-1 [5].
[SOURCE: ISO/IEC TR 23008-15:2018, 3.8]

3.2 Abbreviated terms
ABC automatic brightness control
ARIB Association of Radio Industries and Businesses
ATSC Advanced Television Systems Committee
BBC British Broadcasting Corporation
CLASP non-profit organisation supporting the development and implementation of
policies and programs to improve the energy and environmental performance
of appliances and equipment we use every day (Collaborative Labelling and
Standards Program)
CLL content light level
CRT cathode ray tube
CTA Consumer Technology Association (formerly Consumer Electronics
Association)
FALD full array local dimming
FALL frame average light level
FIFA Fédération Internationale de Football Association
FPS frames per second
HD+ (HD-Plus) high-definition satellite television platform for German-speaking users, owned
by SES ®
HDMI High Definition Multimedia Interface
HEVC high efficiency video coding
Hz hertz
ICDM International Committee on Display Metrology
ICtCp patented colour representation format specified in ITU-R BT.2100-2 [5]
ITU-R International Telecommunication Union, Radiocommunication Sector
MDD motion-based dynamic dimming
NC+ Polish satellite platform
NEEA Northwest Energy Efficiency Alliance
NOS Nederlandse Omroep Stichting (Dutch Broadcast Foundation)
OTT over-the-top
PCL Pacific Crest Labs
RTP Rádio e Televisão de Portugal
SES global satellite operator with its head office in Luxembourg
SMPTE Society of Motion Picture and Television Engineers
sRGB standard Red Green Blue colour space
TF1 French free-to-air television channel
TFT thin-film transistor
TNT American TV network operated by Turner International (originally Turner
Network Television)
UGC user generated content
YCbCr colour space model used for digital video
_____________
® ®
HDMI and HDMI High-Definition Multimedia Interface are trademarks of HDMI Licensing Administrator, Inc.
This information is given for the convenience of users of this document and does not constitute an endorsement
by IEC of the product named. Equivalent products may be used if they can be shown to lead to the same results.

– 12 – IEC TR 63274:2021 © IEC 2021
4 Overview
4.1 High dynamic range video
HDR video signals are able to represent pictures that can be displayed with much higher peak
luminance levels and much darker black levels compared to traditional SDR signals. HDR
signals can potentially change the related power consumption of HDR-capable televisions. For
more information on the history, nature, and ranges of HDR video, see IEC TR 62935:2016,
Clause 4 [14].
For information on the early HDR Standards and Related Activities, see IEC TR 62935:2016,
Clause 5 [14].
However, most of the standards outlined in IEC TR 62935:2016, Clause 5 [14] have been
updated or superseded since its publication.
ITU-R Recommendation BT.2020-1 has been updated to BT.2020-2 [9] and now includes the
higher frame rates of 100 Hz and 120/1,001 Hz. ITU-R has also now published
Recommendation BT.2100-2 [5] that defines HDR formats for both HD and UHD resolutions.
These formats use the same colour primaries as BT.2020-2 [9] but with two different transfer
functions that may be used for HDR:
• perceptual quantizer (PQ), which was previously standardized in SMPTE ST 2084 [4];
• hybrid log-gamma (HLG), which was previously standardized as ARIB STD-B67 [15].
BT.2100-2 [5] also adds support for ICtCp constant luminance colour representations, but
deprecates YCbCr from ITU-R BT.2020-2 [9].
CEA standards have now become CTA standards, with exactly the same number, as a result in
the name change of the association from the Consumer Electronics Association to the
Consumer Technology Association. CTA-861-F [16] has now been superseded by CTA-861-G
[10], which adds support for signalling the HLG EOTF and adds the capability to support
alternative dynamic HDR metadata systems SMPTE ST 2094-10 [11] (also known as Dolby
Vision® dynamic metadata format) and SMPTE ST 2094-40 [12] (also known as HDR10+). ®
2.0b specification, adding
In December 2016, the HDMI Forum extended its original HDMI
additional support for HDR video transport, in line with CTA-861-G [10], to include metadata
signalling for hybrid log-gamma (HLG). The HDMI Forum included the following notice on its
website:
NOTICE: Previously, HDMI Specification Version 2.0b (HDMI 2.0b) only supported HDR
(High Dynamic Range) video transport in the SMPTE ST 2084 EOTF (as applied in the
media profile commonly known as HDR10), by referencing the CTA-861.3 specification. The
Consumer Technology Association (CTA) has recently notified the HDMI Forum of the
adoption of a new version of the CTA-861 Specification, CTA-861-G. This new version
provides additional support for HDR Video transport by including (among others) an
extension to the static metadata signalling to include the HLG (Hybrid Log Gamma) EOTF.
The HDMI Forum has assessed the applicability of the CTA-861-G Specification to HDMI
2.0b. The HDMI Forum has confirmed that the extension of the static metadata signalling to
include HLG can be utilized under the existing HDMI 2.0b Specification. This means that
HLG Video Transport functionality can be implemented on HDMI 2.0b compliant devices.
_____________
Dolby® and Dolby Vision® are trademarks of products supplied by Dolby Laboratories, Inc. This information is
given for the convenience of users of this document and does not constitute an endorsement by IEC of the product
named. Equivalent products may be used if they can be shown to lead to the same results.
®
In November 2017, the HDMI Forum released its HDMI 2.1 [17] specification, which enabled
even higher spatial resolutions and support for higher frame rates (10K at 120 Hz maximum)
and included Dynamic HDR for specifying HDR metadata on a scene by scene basis or even a
frame by frame basis.
4.2 HDR TV market
IEC TR 62935:2016, Clause 6 [4] presents an overview of the market related to HDR video
content.
A small number of HDR-capable TVs were introduced to the market in 2015. In general, these
televisions were able to stream HDR content from Internet-based video services. In some cases, ®
these television sets included at least one HDMI 2.0a interface, which enables the TV to accept
HDR video from external devices such as Blu-ray™ discs. In early 2016, the Ultra HD Alliance
announced technical requirements and a certification program for the Ultra HD Premium™
logo and three TV manufacturers introduced Ultra HD Premium™ television sets at the U.S.
CES show in 2016. High-end TVs from the major brands supported HDR, initially just HDR10,
but followed very quickly by HLG, and, by 2018, it was hard to find a 4K/UHD TV that didn’t
support both HDR10 and HLG. Support for other HDR formats, such as Dolby Vision®, HDR10+
and SL-HDR, varies by brand.
Various Ultra HD Blu-ray™ discs also were announced in March 2016. As more and more HDR
movies are released, there will be more content available for streaming and for cable and
satellite providers to eventually deliver.
ATSC published its next-generation A/341, ATSC 3.0 Standard: Video – HEVC [18], [4] in May
2017. That standard supports HDR coding using PQ or HLG transfer characteristics, and WCG
ITU-R BT.2020 [9] colour space. ATSC 3.0 is now deployed in South Korea, however, until
ATSC 3.0 has been widely deployed, broadcasters face the challenge of not only delivering
HDR video content that was produced offline, but also should consider the challenges of live
HDR production as well as backward compatibility with SDR TVs. “Over-The-Top” (OTT) 4K,
6 7
WCG content is being provided by a number of streaming services such as NETFLIX , Hulu ,
and Amazon . As HDR broadcasting emerges, high dynamic range will be applied to content
types beyond pre-produced material such as movies and TV series. Examples are sports, news,
daytime television, cartoons and other popular video genres.
In Europe, UHD HDR Broadcasting has started. TravelXP became Europe’s first full time 4K
HDR channel in December 2017, launched on Eutelsat’s Hotbird satellite and on the HD+
platform in Germany over an SES satellite. TravelXP 4K, is offered in 4K resolution, 10-bit Rec
ITU-R BT.2020 [9] wide colour space, 50 frames per second, with HLG HDR.
BT Sports became the first UK broadcaster to show top-flight football in HDR when it broadcast
a UEFA Champions League game to mobile viewers using the BT Sport app in March 2018.
_____________
Blu-ray™, Blu-ray Disc™ and Ultra HD Blu-ray™ are trademarks of the Blu-ray Disc Association. This information
is given for the convenience of users of this document and does not constitute an endorsement by IEC of the
product named. Equivalent products may be used if they can be shown to lead to the same results.
Ultra HD Premium™ is a trademark of The Ultra HD Alliance. This information is given for the convenience of
users of this document and does not constitute an endorsement by IEC of the product named. Equivalent products
may be used if they can be shown to lead to the same results.
NETFLIX is a trademark of Netflix, Inc. This information is given for the convenience of users of this document
and does not constitute an endorsement by IEC of the product named. Equivalent products may be used if they
can be shown to lead to the same results.
Hulu is a trademark of Hulu, LLC. This information is given for the convenience of users of this document and
does not constitute an endorsement by IEC of the product named. Equivalent products may be used if they can
be shown to lead to the same results.
Amazon is a trademark of Amazon.com, Inc. This information is given for the convenience of users of this
document and does not constitute an endorsement by IEC of the product named. Equivalent products may be
used if they can be shown to lead to the same results.

– 14 – IEC TR 63274:2021 © IEC 2021
The match was also shown on big-screen TVs to a private audience in HDR combined with 4K
Ultra HD. Eurosport launched its 4K channel in time to cover the 2018 French Open tennis
tournament and included a public digital terrestrial television HDR transmission in the Paris,
Nantes and Toulouse regions via France Télévisions, as well as on satellite.
In the summer of 2018, the BBC ran a series of public trials, showing the Royal Wedding,
Wimbledon 2018 and FIFA World Cup matches in HDR via the BBC iPlayer. Indeed, 24
broadcasters subscribed to the FIFA World Cup UHD HDR content including RTP in Portugal,
NOS in the Netherlands, TF1 in France, NC+ in Poland and Mediaset in Italy. beIN Sports in
Qatar regularly broadcast UHD HDR soccer and Sky have stated that they will introduce UHD
HDR broadcasts in 2019, presumably sports.
5 HDR TV power measurement challenges
5.1 Overview
The main standards related to measuring TV power consumption are IEC 62087-1 [1],
IEC 62087-2 [2] and IEC 62087-3 [3]. IEC 62087-1 [4] covers general power consumption
measurement aspects of AV equipment. IEC 62087-2 [2] covers the test media used in power
consumption measurement, including related Blu-ray™ discs and DVDs that provide standard
dynamic range video. IEC 62087-3 [3] covers the power consumption methods specific to TVs.
Since 2008, the IEC 62087 series of standards has been the primary specification for global TV
power measurement, and there are many local regulations that make use of IEC 62087 as well.
Unlike the move from HD resolution to UHD resolution, which did not affect video levels, the
move from SDR to HDR affects the levels of the incoming signal and with that can make
meaningful use of higher peak luminance levels that are provided by modern television sets.
This change enables content creators to compose, light, and expose their scenes differently
and enables editors and colourists to colour and grade the final output with a different result in
mind. Further, the change from standard colour gamut to wide colour gamut, as defined in ITU-R
BT.2020 [9] extends the colour space of the video signal that is received an can be rendered
by the television.
In addition, HDR and WCG practices will give content providers more creative options. For
instance, in a scene with a couple near a candle, the colourist would be highly constrained in
SDR and would need to compress the dynamic range of the image to provide clear details in
faces, candle flame, and shadows. On the other hand, in HDR, the colourist can easily capture
flame and shadows and would have much less creative constraint regarding the brightness of
faces and other objects in the scene. Owing to these extended creative options with HDR,
depending on the colour grading, the average picture level of the scene can vary much more
widely in HDR than in SDR. This flexibility means that typical grading practices will evolve as
colourists adapt to these new tools. HDR can support much brighter content, as well as even
darker mid-tone and deeper black levels, which, along with bright highlights, can make images
look much more dramatic compared to SDR. We will likely see both brighter and darker content
scenarios, depending on genre.
Further, with the previous generation of CRT and early TFT and plasma-based displays,
generally very little difference between the display capabilities amongst TVs was assumed and
the SDR signal specifications of ITU-R BT.709 [6] and BT.1886 [7] were deemed sufficient for
content delivery. In contrast, today’s TVs exhibit a variety of panel display technologies and
other considerations such as price point. In addition, HDR signal formats can contain signals
that were created on mastering displays with varying capabilities. Technically, mapping
between the source signal range and the TVs rendering capabilities are typically handled by
tone mapping algorithms. Even though this approach works well from a general consumer point
of view, it makes any power consumption assessments more involved.

For the above reasons, this document recommends
• assessing the power consumption of international HDR video content when displayed on
current typical consumer HDR TVs (similar to the current IEC 62087-3 [3]);
• using those results to establish a new statistical power consumption target;
• creating new HDR-based content that can be used in testing the power consumption of
HDR-capable televisions.
Sublause 5.2 elaborates the steps and deliverables required to assess the power consumption
of HDR-capable television.
5.2 Content analysis
5.2.1 General
During the compilation of the initial test content for IEC 62087:2008 [19] , experts in US, Europe
and Australia recorded an average week of broadcast TV content (about 40 hours) and created
a master APL’ histogram of that content (see IEC 62087-2 [2]). The master histogram value
coordinates are:
• per second averaged pre-gamma video signal voltage as demodulated from the
broadcast signal expressed as a percentage of the full white signal voltage, and
• frequency of occurrence of that percentage value during the 40 hours of broadcasting.
This histogram is precisely replicated in the 10-minute dynamic TV broadcast test video
sequence.
The approaches used in IEC 62087:2008 [19] for SDR content cannot be applied with HDR
video content. HDR video poses several new challenges that likely have an impact on power
consumption. Those challenges are listed in 5.2.2, 5.2.3 and 5.2.4.
5.2.2 Sources of HDR video content
In 2019, the vast majority of HDR video content is only available on Ultra HD Blu-ray™ discs
and from online service providers. These delivery methods generally include copy protection
technologies that preclude easy, legal capture of content. This means that the previous method
of statistical measurement used with the broadcast content in IEC 62087:2008 [19
...