What ITU-R BT.2020 (UHD) requires
Regulatory conformance with the ITU-R BT.2020 standard for Ultra High Definition (UHD) video mandates strict adherence to a comprehensive set of technical specifications. An asset’s spatial resolution must precisely match either 3840x2160 pixels or 7680x4320 pixels, presented with a required display aspect ratio of 16:9 and utilizing a progressive scan type. The colorimetry system is rigorously defined, requiring the exclusive use of ITU-R BT.2020 color primaries along with the corresponding ITU-R BT.2020 non-constant luminance matrix coefficients. While the specification’s native transfer characteristics are defined as ITU-R BT.2020 for standard dynamic range, high dynamic range (HDR) implementations must instead employ a compliant electro-optical transfer function, specifically SMPTE ST 2084 or ARIB STD-B67. Signal quantization is limited to a valid bit depth of either 10 or 12 bits per component. Acceptable digital video formats include chroma subsampling schemes of 4:2:0, 4:2:2, or 4:4:4. Finally, temporal resolution is restricted to an enumerated set of compliant frame rates: 23.976, 24, 25, 29.97, 30, 50, 59.94, 60, 100, 119.88, and 120 frames per second. Failure to satisfy any one of these interdependent criteria constitutes a definitive deviation from the BT.2020 UHD compliance framework.
Pillar: Creative, Content & Media IP · Authority: ITU (International Telecommunication Union) · Version: 1.1.1 · Last updated:
Primary source: https://www.itu.int/en/ITU-T/publications/Pages/recs.aspx
SHA-256 integrity: 9a5bb874ab0f16cdf50bc7bfd0c6f67c15f669156385b02feb5fb80fec433f9c
Primary Citations — 6 traced to source
- {"citation_id":"ITU-R BT.2020-2","description":"The core specification defining parameter values for UHDTV systems for production and international programme exchange, including resolution, frame rates, bit depth, and colorimetry.","url":"https://www.itu.int/rec/R-REC-BT.2020/en"}
- {"citation_id":"ITU-R BT.2100","description":"Defines image parameter values for High Dynamic Range Television (HDR-TV) systems, which is almost always used in conjunction with BT.2020's wide color gamut. Specifies PQ and HLG transfer functions.","url":"https://www.itu.int/rec/R-REC-BT.2100/en"}
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