IEC TR 63449:2023

IEC TR 63449 ®
Edition 1.0 2023-05
TECHNICAL
REPORT
colour
inside
Dynamic metadata high dynamic range impacts on TV power consumption
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IEC TR 63449 ®
Edition 1.0 2023-05
TECHNICAL
REPORT
colour
inside
Dynamic metadata high dynamic range impacts on TV power consumption

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.40 ISBN 978-2-8322-6849-0

– 2 – IEC TR 63449:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 11
4 Dynamic metadata high dynamic range video . 12
4.1 Introduction to dynamic metadata HDR video . 12
4.1.1 Overview . 12 ®
4.1.2 Dolby Vision . 13
4.1.3 HDR10+ . 13
4.2 Market relevance of dynamic metadata HDR video . 14 ®
4.2.1 Dolby Vision market snapshot . 14
4.2.2 HDR10+ market snapshot . 15
4.3 Consumer availability of dynamic metadata HDR video technologies in TVs . 15
5 Dynamic metadata HDR TV power consumption research. 16
5.1 Overview. 16
5.2 Dynamic metadata test media . 16
5.3 Dynamic metadata laboratory tests . 21
5.3.1 General . 21
5.3.2 General research method . 21
5.3.3 Phase I testing: assessing the overall impact of dynamic metadata . 22
5.3.4 Phase II testing: next level of detail . 23
5.3.5 Phase III: in-depth testing with one TV . 30
6 Summary . 32
Annex A (informative) Test material workflows . 34
Bibliography . 36

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' . 8
Figure 2 – Power use with dynamic metadata . 25
Figure 3 – Screen-average dynamic luminance with dynamic metadata vs static
metadata . 26
Figure 4 – Relative efficiency of TVs when playing different content formats . 27
Figure 5 – Normalized comparison of LED TVs playing Table 1 UHD Dolby Vision® and
HDR10+ 5 min test clips . 29
Figure 6 – Phase III test results by content category . 32

Table 1 – Static and dynamic metadata test media . 17
Table 2 – HDR10+ test media metadata . 18 ®
Table 3 – Dolby Vision test media metadata . 19
Table 4 – Results of phase I testing . 22
Table 5 – Summary of phase I testing . 23
Table 6 – Characteristics of TV models used for the test media validation . 23

Table 7 – 4K real-world content used for tests . 24
Table 8 – Phase II: real world content (streamed movies/series) . 24
Table 9 – Phase III: HDR10+ and SDR using non-test clips . 30
Table 10 – Phase III: test clips only . 30
Table 11 – Phase III test results. 31
Table A.1 – Workflow details . 35

– 4 – IEC TR 63449:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DYNAMIC METADATA HIGH DYNAMIC RANGE
IMPACTS ON TV POWER CONSUMPTION

FOREWORD
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IEC TR 63449 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. It is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
100/3862/DTR 100/3886/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
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– 6 – IEC TR 63449:2023 © IEC 2023
INTRODUCTION
HDR technologies affect the entire video ecosystem from production and processing, through
to distribution and presentation. HDR-capable television sets typically have higher peak
luminance and better low-luminance capabilities than non-HDR TVs and can take advantage of
HDR video signals which typically represent scenes with much higher luminance and more
detailed low-luminance levels than was possible in traditional analogue and digital non-HDR
video systems.
As the luminance range of an HDR signal might not match the luminance range capabilities of
the display device, the signal must be adjusted before being displayed. This luminance
adjustment is called tone-mapping and is implemented as a processing step in the TV. The tone
...