H.274 (08/2020) - ITU-T Recommendation Database

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ITU-T H.274 (08/2020) عربي | 中文 | English | Español | Français | Русский Versatile supplemental enhancement information messages for coded video bitstreams Recommendation ITU-T H.274 specifies the syntax and semantics of video usability information (VUI) parameters and supplemental enhancement information (SEI) messages for use with coded video bitstreams. The VUI parameters and SEI messages defined in this Recommendation may be conveyed within coded video bitstreams in a manner specified in a video coding specification or may be conveyed by other means as determined by the specifications for systems that make use of such coded video bitstreams. This Recommendation is particularly intended for use with coded video bitstreams as specified by Rec. ITU-T H.266 | ISO/IEC 23090-3, although it is drafted in a manner intended to be sufficiently versatile and generic that it may also be used with other types of coded video bitstreams. This Recommendation was developed collaboratively with ISO/IEC JTC 1/SC 29, and corresponds with ISO/IEC 23002-7 as technically aligned twin text Citation: https://handle.itu.int/11.1002/1000/14337 Series title: H series: Audiovisual and multimedia systems H.200-H.499: Infrastructure of audiovisual services H.260-H.279: Coding of moving video Approval date: 2020-08-29 Identical standard: ISO/IEC 23002-7:2020 (Twinned) Provisional name: H.SEI Approval process: AAP Status: Superseded Maintenance responsibility: ITU-T Study Group 21 Further details: Patent statement(s) Development history [26 related work items in progress] EditionsRelated Supplement(s)Related technical papers and reports Ed. ITU-T Recommendation Status Summary Table of Contents Download 3 H.274 (V3) (09/2023) In force here here here 2 H.274 (V2) (05/2022) Superseded here here here 1 H.274 (08/2020) Superseded here here here ITU-T Supplement Title Status Summary Table of contents Download H Suppl. 1 (05/1999) Application profile – Sign language and lip-reading real-time conversation using low bit rate video communication In force here here here H Suppl. 6 (04/2006) Control load quantum for decomposed gateways In force here here here H Suppl. 9 (05/2008) Gateway control protocol: Operation of H.248 with H.225.0, SIP, and ISUP in support of emergency telecommunications service (ETS)/international emergency preference scheme (IEPS) In force here here here H Suppl. 11 (02/2009) Analysis of class-based home network QoS solutions In force here here here H Suppl. 12 (11/2013) Gateway control protocol: Priority traffic treatment by ITU-T H.248 gateways In force here here here H Suppl. 13 (10/2015) Gateway control protocol: Common ITU-T H.248 terminology - Release 2 In force here here here H Suppl. 14 (10/2015) Gateway control protocol: SDP codepoints for gateway control - Release 2 In force here here here H Suppl. 15 (01/2017) Conversion and coding practices for HDR/WCG Y'CbCr 4:2:0 video with PQ transfer characteristics In force here here here H Suppl. 17 (11/2014) Guide for addressing accessibility in standards In force here here here H Suppl. 18 (10/2017) Signalling, backward compatibility and display adaptation for HDR/WCG video coding In force here here here H Suppl. 19 (04/2021) Usage of video signal type code points In force here here here H Suppl. 21 (01/2025) Film grain synthesis technology for video applications In force here here here Title Approved on Download Testing of personal audio systems for compliance with ITU-T H.870 (2018) 2024 here Testing of personal audio systems for compliance with ITU-T H.870 (2018) 2021 here Telecommunications Accessibility Checklist 2006 here

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