Overview
IEC TR 63449:2023 - Dynamic metadata high dynamic range impacts on TV power consumption is a Technical Report from the IEC that studies how HDR video formats using dynamic metadata affect TV luminance behavior and energy use. The report compares the same content delivered with and without dynamic metadata, reviews the current HDR TV market, and analyses existing HDR TV power measurement methods and considerations for updating those methods. The study covers content encoded with dynamic metadata technologies such as Dolby Vision® and HDR10+, but does not provide a head-to-head comparison of those two systems.
Key topics covered
- Dynamic metadata HDR fundamentals - how dynamic metadata informs tone-mapping and enables per-scene or per-frame luminance optimization compared with static metadata (e.g., HDR10) or non‑metadata HDR (e.g., HLG).
- Power and luminance measurements - laboratory testing methods and multi‑phase experiments (Phase I–III) used to assess the impact of dynamic metadata on TV power consumption and screen-average luminance (APL/APL′).
- Market analysis - snapshot of consumer availability and adoption of dynamic metadata HDR in contemporary televisions.
- Measurement method considerations - review of current power measurement standards and suggestions for adapting test content and procedures to capture dynamic metadata effects.
- Terminology and metrics - definitions and use of metrics such as APL, APL′, CLL/MaxCLL, colour gamut and colour volume relevant to HDR power testing.
Practical applications and who should use this standard
IEC TR 63449 is valuable for professionals who need to understand or measure the energy implications of HDR playback:
- TV manufacturers and display engineers - to validate power-performance trade-offs when implementing dynamic metadata tone-mapping.
- Test laboratories and certification bodies - to develop representative test clips and update measurement protocols for more accurate energy labelling.
- Regulators and energy-efficiency program managers - to inform policy and standards for TV energy consumption that consider HDR dynamics.
- Content creators and streaming services - to understand how dynamic metadata delivery may affect consumer devices’ power use.
- Standards developers and academics - as an evidence base when revising measurement standards or researching HDR system effects.
Related standards
- IEC TR 63274:2021 - study of power consumption for static metadata HDR and HLG.
- References used in definitions and test contexts include ITU‑R BT.2100, IEC 62977‑2‑1, and ISO/IEC TR 23091‑4 (as cited in the report).
This report helps stakeholders adapt testing, product design and policy to the real-world energy behaviour of modern HDR TVs that use dynamic metadata.