| 信息技术 — 活动图像和相关的声音信息的 一般性编码:电视
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此ITU-T H.262建议书|国际标准ISO/IEC 13812-2定义了视频数据的编码表达法以及重建图像所需要的解码过程。建议书提供了一般性的视频编码方案,它适用于范围广泛的应用、比特率、图像分辨率和质量。所用的基本编码算法将运动补偿预测和DCT相结合。被编码的图像可以是隔行的,或者逐行的。为了方便这种一般性电视编码标准的实际使用,算法所需的要素被综合成单一的句法,并按照句型(功能)和等级(参数)定义了数量有限的一些子集。 此建议书 | 国际标准的第三版包括ITU-T H.262 (1995)建议书 | ISO/IEC 13818 2:1996,并随后由四次勘误和11份修正案进行了修改:1 第一次勘误增加了一个片段图像识别码,允许应用定义默认的颜色描述参数,删除了对步进性帧中场结构DCT编码的禁令,并对重建运动矢量限制范围的模糊性以及序列边界上VBV的模糊性做了澄清,还有些细小的改错。2 第二个勘误改动了离散余弦变换的要求和低时延的时域参考,还有些细小的改错。3 第一个修正案提供了获得和注册版权识别码的方法。4 第二个修正案定义了一个4:2:2的配置。5 第三个修正案增加了摄像机参数的一项扩展项和一个多视点的配置。6 A fourth amendment adding an ITU-T extension.7 第五个修正案在 4:2:2配置中增加了一个高等级。8 六个修正案在所有配置的高等级中将每帧线数的上限从1152减少到1088。9 第三次勘误澄清了处理保留扩展数据的描述。10 第七个修正案提供了发送补充“内容描述数据”的能力。11 第四次勘误澄清并纠正了与离散余弦变换精度问题有关的规范。12 第八个修正案更新并改进了支持色空间的规范。13 第九个修正案规定了支持1080@50p/60p视频格式的额外层。14 第十个修正案规定了立体3D内容“帧封装安排”的信令。15 第十一个修正案增加了五点采样的并行帧封装安排。 |
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| Citation: |
https://handle.itu.int/11.1002/1000/11627 |
| 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: |
2012-02-29 |
| Identical standard: | ISO/IEC 13818-2:2013 (Common) |
| Approval process: | AAP |
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Status: |
In force |
| Observation: | The published text includes the modifications introduced by ITU-T H.262 (2012) Amd.1 (2013).
This text was produced through a joint activity with ISO and IEC. According to the agreement with our partners, this document is only available through payment. Please get in touch with sales@itu.int for more information. |
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Maintenance responsibility: |
ITU-T Study Group 21 |
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Further details: |
Patent statement(s)
Development history
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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H Suppl. 1 (05/1999)
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Application profile – Sign language and lip-reading real-time conversation using low bit rate video communication
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In force
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here
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here
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here
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H Suppl. 6 (04/2006)
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Control load quantum for decomposed gateways
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In force
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here
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here
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here
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H Suppl. 9 (05/2008)
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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)
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In force
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here
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here
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here
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H Suppl. 11 (02/2009)
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Analysis of class-based home network QoS solutions
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In force
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here
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here
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here
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H Suppl. 12 (11/2013)
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Gateway control protocol: Priority traffic treatment by ITU-T H.248 gateways
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In force
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here
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here
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here
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H Suppl. 13 (10/2015)
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Gateway control protocol: Common ITU-T H.248 terminology - Release 2
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In force
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here
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here
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here
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H Suppl. 14 (10/2015)
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Gateway control protocol: SDP codepoints for gateway control - Release 2
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In force
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here
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here
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here
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H Suppl. 15 (01/2017)
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Conversion and coding practices for HDR/WCG Y'CbCr 4:2:0 video with PQ transfer characteristics
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In force
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here
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here
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here
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H Suppl. 17 (11/2014)
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Guide for addressing accessibility in standards
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In force
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here
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here
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here
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H Suppl. 18 (10/2017)
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Signalling, backward compatibility and display adaptation for HDR/WCG video coding
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In force
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here
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here
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here
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H Suppl. 19 (04/2021)
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Usage of video signal type code points
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In force
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here
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here
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here
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H Suppl. 21 (01/2025)
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Film grain synthesis technology for video applications
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In force
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here
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here
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here
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| Title |
Approved on |
Download |
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Testing of personal audio systems for compliance with ITU-T H.870 (2018)
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2024
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here
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Testing of personal audio systems for compliance with ITU-T H.870 (2018)
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2021
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here
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Media coding toolbox for IPTV: Audio and video codecs
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2016
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here
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Telecommunications Accessibility Checklist
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2006
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here
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