H.265标准已获通过

最新推荐文章于 2023-02-13 16:36:37 发布
翻译 最新推荐文章于 2023-02-13 16:36:37 发布 · 1.4k 阅读 · 1
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#H.265 #标准 #视频压缩

原文链接：http://www.itu.int/net/pressoffice/press_releases/2013/01.aspx

 

New video codec to ease pressure on global networks
缓解全球网络压力的新一代视频编解码器
Successor to award-winning standard to unleash new innovation
一流标准的继任者，产业革新的推动者

Geneva, 25 January 2013 – A new video coding standard building on the PrimeTime Emmy award  winning ITU-T H.264 / MPEG-4 AVC was agreed by ITU members today.
日内瓦，2013年1月25日—— 构建于“黄金时段艾美奖获得者” ITU-T H.264 / MPEG-4 AVC（以下简称H.264）基础上的新视频编码标准，今天由ITU成员批准。
 
The new codec will considerably ease the burden on global networks where, by some estimates, video accounts for more than half of bandwidth use. The new standard, known informally as ‘High Efficiency Video Coding’ (HEVC) will need only half the bit rate of its predecessor, ITU-T H.264 / MPEG-4 Part 10 ‘Advanced Video Coding’ (AVC), which currently accounts for over 80 per cent of all web video. HEVC will unleash a new phase of innovation in video production spanning the whole ICT spectrum, from mobile devices through to Ultra-High Definition TV.
    据估计，视频数据已经占用了全球网络一半以上的带宽，而该编解码器将大大减轻网络带宽在视频数据方面的负担。该标准的非正式名称为“高效视频编码”（HEVC），它将比其前辈H.264节省一半的码率（目前超过80%的网络视频采用了H.264技术进行压缩），HEVC将把横跨整个通信与信息技术领域的、从移动设备到超高分辨率电视的视频产业引入到一个新的变革阶段。

ITU-T’s Study Group 16 has agreed first-stage approval (consent) of the much-anticipated standard known formally as Recommendation ITU-T H.265 or ISO/IEC 23008-2. It is the product of collaboration between the ITU Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG).
    ITU-T的第16研究组（SG16）已就这一期待已久的、正式名称为ITU-T H.265或 ISO/IEC 23008-2的标准达成了初步一致。该标准是ITU的视频编码专家组（VCEG）和ISO/IEC的运动图像专家组（MPEG）合作的产物。

Dr Hamadoun I. Touré, Secretary-General, ITU: “ITU-T H.264 underpinned rapid progression and expansion of the video ecosystem, with many adopting it to replace their own proprietary compression codecs. The industry continues to look to ITU and its partners as the global benchmark for video compression, and I have no doubt that this new standard will be as effective as its predecessor in enabling the next wave of innovation in this fast-paced industry.”
    ITU常务秘书长哈马道恩博士说：“H.264为视频生态系统的快速进步和发展夯实了基础，因为许多企业用H.264取代了他们独有的压缩编解码器。工业界一直以来都将ITU及其伙伴视为全球视频压缩领域的牛耳，我认为，新的标准在推动快速发展的视频产业进入下一波变革方面，毫无疑问地将与其前辈（H.264）一样出色。”
 
ITU-T H.264 / MPEG-4 AVC is deployed in products and services from companies including Adobe, Apple, BBC, BT, France Telecom, Intel, Microsoft, Motorola, Nokia, Polycom, Samsung, Sony, Tandberg, Toshiba and others to deliver high definition video images over broadcast television, cable TV, a variety of direct-broadcast satellite-based television services, Blu-Ray disc formats, mobile phones, videoconferencing tools, digital storage media, and Internet Protocol television (IPTV). It remains the most deployed global video compression standard.
H.264被用于许多公司的大量产品和设备中，用以在多种系统中传送高分辨率视频图像。目前它仍是市场占有率最高的全球性视频压缩标准。（原文中的公司名称及各类产品不做一一列举）

ITU-T H.265 / ISO/IEC 23008-2 HEVC will provide a flexible, reliable and robust solution, future-proofed to support the next decade of video. The new standard is designed to take account of advancing screen resolutions and is expected to be phased in as high-end products and services outgrow the limits of current network and display technology.
H.265提供一套灵活、可靠、健壮、面向未来的方案，足以支持下一个十年的视频应用。
该新标准主要针对日益增大的屏幕分辨率而设计，并预期将被逐步用于当前受限于网络和显示技术的高端产品和设备中。

Companies including ATEME, Broadcom, Cyberlink, Ericsson, Fraunhofer HHI, Mitsubishi, NHK, NTT DOCOMO and Qualcomm have already showcased implementations of HEVC. The new standard  includes a ‘Main’ profile that supports 8-bit 4:2:0 video, a ‘Main 10’ profile with 10-bit support, and a ‘Main Still Picture’ profile for still image coding that employs the same coding tools as a video ‘intra’ picture.
许多公司都已经展示过HEVC的应用实例（原文中的公司名称不做一一列举）。该新标准包括：一个支持8位的4:2:0格式视频的“Main”档次，一个支持10位视频的“Main 10”档次，以及一个使用与视频的“Intra”图像相同的编码工具、专为静止图像而准备的“Main静止图像”档次。

The ITU/ISO/IEC Joint Collaborative Team on Video Coding (JCT-VC) (formerly JVT) will continue work on a range of extensions to HEVC, including support for 12-bit video as well as 4:2:2 and 4:4:4 chroma formats. Another important element of this work will be the progression of HEVC towards scalable video coding. The three bodies will also work within the Joint Collaborative Team on 3D-Video (JCT-3V) on the extension of HEVC towards stereoscopic and 3D video coding.
ITU/ISO/IEC的视频编码联合合作组（JCT-VC，即以前的JVT）将继续对HEVC的扩展领域进行研究，包括：12位视频、4:2:2和 4:4:4彩色格式以及另一个重要的发展方向——可伸缩视频编码。上述3方面技术将在JCT-VC的三维视频标准JCT-3V中实现，JCT-3V是HEVC的扩展标准，面向立体和三维视频编码。

award-winning：一流的
much-anticipated：期待已久的
fast-paced：快节奏的
future-proofed：面向未来的
phase in：逐步采用

 

 

 

 

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7.4.3.2 Sequence parameter set RBSP semantics 64 7.4.3.3 Picture parameter set RBSP semantics 69 7.4.3.4 Supplemental enhancement information RBSP semantics 72 7.4.3.5 Access unit delimiter RBSP semantics 72 7.4.3.6 End of sequence RBSP semantics 72 7.4.3.7 End of bitstream RBSP semantics 72 7.4.3.8 Filler data RBSP semantics 73 7.4.3.9 Slice segment layer RBSP semantics 73 7.4.3.10 RBSP slice segment trailing bits semantics 73 7.4.3.11 RBSP trailing bits semantics 73 7.4.3.12 Byte alignment semantics 73 7.4.4 Profile, tier and level semantics 73 7.4.5 Scaling list data semantics 75 7.4.6 Supplemental enhancement information message semantics 76 7.4.7 Slice segment header semantics 77 7.4.7.1 General slice segment header semantics 77 7.4.7.2 Reference picture list modification semantics 81 7.4.7.3 Weighted prediction parameters semantics 82 7.4.8 Short-term reference picture set semantics 83 7.4.9 Slice segment data semantics 85 7.4.9.1 General slice segment data semantics 85 7.4.9.2 Coding tree unit semantics 85 7.4.9.3 Sample adaptive offset semantics 85 7.4.9.4 Coding quadtree semantics 87 7.4.9.5 Coding unit semantics 87 7.4.9.6 Prediction unit semantics 89 7.4.9.7 PCM sample semantics 90 7.4.9.8 Transform tree semantics 90 7.4.9.9 Motion vector difference semantics 91 7.4.9.10 Transform unit semantics 91 7.4.9.11 Residual coding semantics 92 8 Decoding process 94 8.1 General decoding process 94 8.2 NAL unit decoding process 95 8.3 Slice decoding process 96 8.3.1 Decoding process for picture order count 96 8.3.2 Decoding process for reference picture set 96 8.3.3 Decoding process for generating unavailable reference pictures 100 8.3.3.1 General decoding process for generating unavailable reference pictures 100 8.3.3.2 Generation of one unavailable picture 101 8.3.4 Decoding process for reference picture lists construction 101 8.4 Decoding process for coding units coded in intra prediction mode 102 8.4.1 General decoding process for coding units coded in intra prediction mode 102 8.4.2 Derivation process for luma intra prediction mode 103 8.4.3 Derivation process for chroma intra prediction mode 105 8.4.4 Decoding process for intra blocks 105 8.4.4.1 General decoding process for intra blocks 105 8.4.4.2 Intra sample prediction 106 8.5 Decoding process for coding units coded in inter prediction mode 112 8.5.1 General decoding process for coding units coded in inter prediction mode 112 8.5.2 Inter prediction process 112 8.5.3 Decoding process for prediction units in inter prediction mode 115 8.5.3.1 General 115 8.5.3.2 Derivation process for motion vector components and reference indices 115 8.5.3.3 Decoding process for inter prediction samples 130 8.5.4 Decoding process for the residual signal of coding units coded in inter prediction mode 138 8.5.4.1 General 138 8.5.4.2 Decoding process for luma residual blocks 139 8.5.4.3 Decoding process for chroma residual blocks 140 8.6 Scaling, transformation and array construction process prior to deblocking filter process 141 8.6.1 Derivation process for quantization parameters 141 8.6.2 Scaling and transformation process 142 8.6.3 Scaling process for transform coefficients 143 8.6.4 Transformation process for scaled transform coefficients 144 8.6.4.1 General 144 8.6.4.2 Transformation process 144 8.6.5 Picture construction process prior to in-loop filter process 146 8.7 In-loop filter process 146 8.7.1 General 146 8.7.2 Deblocking filter process 147 8.7.2.1 General 147 8.7.2.2 Derivation process of transform block boundary 148 8.7.2.3 Derivation process of prediction block boundary 149 8.7.2.4 Derivation process of boundary filtering strength 150 8.7.2.5 Edge filtering process 151 8.7.3 Sample adaptive offset process 159 8.7.3.1 General 159 8.7.3.2 Coding tree block modification process 159 9 Parsing process 161 9.1 General 161 9.2 Parsing process for 0-th order Exp-Golomb codes 161 9.2.1 General 161 9.2.2 Mapping process for signed Exp-Golomb codes 163 9.3 CABAC parsing process for slice segment data 163 9.3.1 General 163 9.3.2 Initialization process 165 9.3.2.1 General 165 9.3.2.2 Initialization process for context variables 166 9.3.2.3 Storage process for context variables 174 9.3.2.4 Synchronization process for context variables 174 9.3.2.5 Initialization process for the arithmetic decoding engine 174 9.3.3 Binarization process 175 9.3.3.1 General 175 9.3.3.2 Truncated Rice (TR) binarization process 176 9.3.3.3 k-th order Exp-Golomb (EGk) binarization process 177 9.3.3.4 Fixed-length (FL) binarization process 178 9.3.3.5 Binarization process for part_mode 178 9.3.3.6 Binarization process for intra_chroma_pred_mode 178 9.3.3.7 Binarization process for inter_pred_idc 179 9.3.3.8 Binarization process for cu_qp_delta_abs 179 9.3.3.9 Binarization process for coeff_abs_level_remaining 179 9.3.4 Decoding process flow 180 9.3.4.1 General 180 9.3.4.2 Derivation process for ctxTable, ctxIdx and bypassFlag 180 9.3.4.3 Arithmetic decoding process 186 9.3.5 Arithmetic encoding process (informative) 192 9.3.5.1 General 192 9.3.5.2 Initialization process for the arithmetic encoding engine (informative) 192 9.3.5.3 Encoding process for a binary decision (informative) 193 9.3.5.4 Renormalization process in the arithmetic encoding engine (informative) 194 9.3.5.5 Bypass encoding process for binary decisions (informative) 195 9.3.5.6 Encoding process for a binary decision before termination (informative) 196 9.3.5.7 Byte stuffing process (informative) 197 10 Sub-bitstream extraction process 198 Annex A Profiles, tiers and levels 199 A.1 Overview of profiles, tiers and levels 199 A.2 Requirements on video decoder capability 199 A.3 Profiles 199 A.3.1 General 199 A.3.2 Main profile 199 A.3.3 Main 10 profile 200 A.3.4 Main Still Picture profile 200 A.4 Tiers and levels 201 A.4.1 General tier and level limits 201 A.4.2 Profile-specific level limits for the Main and Main 10 profiles 202 A.4.3 Effect of level limits on picture rate for the Main and Main 10 profiles (informative) 204 Annex B Byte stream format 208 B.1 General 208 B.2 Byte stream NAL unit syntax and semantics 208 B.2.1 Byte stream NAL unit syntax 208 B.2.2 Byte stream NAL unit semantics 208 B.3 Byte stream NAL unit decoding process 209 B.4 Decoder byte-alignment recovery (informative) 209 Annex C Hypothetical reference decoder 210 C.1 General 210 C.2 Operation of coded picture buffer (CPB) 214 C.2.1 General 214 C.2.2 Timing of decoding unit arrival 214 C.2.3 Timing of decoding unit removal and decoding of decoding unit 216 C.3 Operation of the decoded picture buffer (DPB) 218 C.3.1 General 218 C.3.2 Removal of pictures from the DPB 218 C.3.3 Picture output 219 C.3.4 Current decoded picture marking and storage 220 C.4 Bitstream conformance 220 C.5 Decoder conformance 221 C.5.1 General 221 C.5.2 Operation of the output order DPB 222 C.5.2.1 General 222 C.5.2.2 Output and removal of pictures from the DPB 222 C.5.2.3 Picture decoding, marking, additional bumping, and storage 223 C.5.2.4 "Bumping" process 223 Annex D Supplemental enhancement information 225 D.1 General 225 D.2 SEI payload syntax 226 D.2.1 General SEI message syntax 226 D.2.2 Buffering period SEI message syntax 228 D.2.3 Picture timing SEI message syntax 229 D.2.4 Pan-scan rectangle SEI message syntax 229 D.2.5 Filler payload SEI message syntax 230 D.2.6 User data registered by Rec. ITU-T T.35 SEI message syntax 230 D.2.7 User data unregistered SEI message syntax 230 D.2.8 Recovery point SEI message syntax 230 D.2.9 Scene information SEI message syntax 231 D.2.10 Picture snapshot SEI message syntax 231 D.2.11 Progressive refinement segment start SEI message syntax 231 D.2.12 Progressive refinement segment end SEI message syntax 231 D.2.13 Film grain characteristics SEI message syntax 232 D.2.14 Post-filter hint SEI message syntax 232 D.2.15 Tone mapping information SEI message syntax 233 D.2.16 Frame packing arrangement SEI message syntax 234 D.2.17 Display orientation SEI message syntax 234 D.2.18 Structure of pictures information SEI message syntax 235 D.2.19 Decoded picture hash SEI message syntax 235 D.2.20 Active parameter sets SEI message syntax 235 D.2.21 Decoding unit information SEI message syntax 236 D.2.22 Temporal sub-layer zero index SEI message syntax 236 D.2.23 Scalable nesting SEI message syntax 236 D.2.24 Region refresh information SEI message syntax 237 D.2.25 Reserved SEI message syntax 237 D.3 SEI payload semantics 237 D.3.1 General SEI payload semantics 237 D.3.2 Buffering period SEI message semantics 240 D.3.3 Picture timing SEI message semantics 242 D.3.4 Pan-scan rectangle SEI message semantics 247 D.3.5 Filler payload SEI message semantics 248 D.3.6 User data registered by Rec. ITU-T T.35 SEI message semantics 248 D.3.7 User data unregistered SEI message semantics 248 D.3.8 Recovery point SEI message semantics 248 D.3.9 Scene information SEI message semantics 249 D.3.10 Picture snapshot SEI message semantics 252 D.3.11 Progressive refinement segment start SEI message semantics 252 D.3.12 Progressive refinement segment end SEI message semantics 253 D.3.13 Film grain characteristics SEI message semantics 253 D.3.14 Post-filter hint SEI message semantics 258 D.3.15 Tone mapping information SEI message semantics 259 D.3.16 Frame packing arrangement SEI message semantics 263 D.3.17 Display orientation SEI message semantics 270 D.3.18 Structure of pictures information SEI message semantics 271 D.3.19 Decoded picture hash SEI message semantics 272 D.3.20 Active parameter sets SEI message semantics 273 D.3.21 Decoding unit information SEI message semantics 273 D.3.22 Temporal sub-layer zero index SEI message semantics 275 D.3.23 Scalable nesting SEI message semantics 275 D.3.24 Region refresh information SEI message semantics 276 D.3.25 Reserved SEI message semantics 277 Annex E Video usability information 278 E.1 General 278 E.1 VUI syntax 279 E.1.1 VUI parameters syntax 279 E.1.2 HRD parameters syntax 281 E.1.3 Sub-layer HRD parameters syntax 282 E.2 VUI semantics 282 E.2.1 VUI parameters semantics 282 E.2.2 HRD parameters semantics 294 E.2.3 Sub-layer HRD parameters semantics 296 Bibliography 298
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第一章 1图像是视频信号的基本单位 帧 像素(Pixel)　 视频序列（三维矩阵）： Ｎ*Ｍ：空间域； 时间域   帧率（ｆｐｓ）：平滑连续需要２５－３０以上 ２原始视频数据量巨大，视频编码即视频压缩，其目的是尽可能去除视频数据中的多余成分．减少编码或者编码后的数据量   数据压缩分类：无损，有损 视频压缩：有损．失真换取更高的压缩比 衡量压缩算法性能优劣与两个参数有关
GB/T28181-2022针对H.265、AAC的说明和技术实现
大牛直播SDK
02-13 2187
实际上，GB28181-2022针对H.265、AAC的说明，确切的说算是2016的补充，特别是像我们做Android平台GB28181设备接入模块，实际上从GB28181-2016过渡到GB28181-2022难度不大，或者说仅有很少的改动即可，随着今年七月份开始针对2022的实施推广，相信GB28181这块会渗透到各行各业。
支持H.265的国标GB28181流媒体服务能为项目应用带来什么改变？
Babosa的专栏
06-24 2826
H.265的意义意味着的是更低的码率与更高的视频质量； 带宽利用降低，可以传输更多的数据； 存储数据降低可以节省存储； 流量降低，可以减少流量成本；
H264硬件编解码技术：原理、应用与文件分析
H.264也被称为MPEG-4 AVC（Advanced Video Coding，高级视频编码），是由国际标准化组织（ISO）和国际电信联盟（ITU）共同开发的视频编码标准。这一标准因其出色的压缩效率、较好的视频质量以及良好的网络适应性而被...
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