MPEG用于电视的过去,当前和未来

MPEG用于电视的过去、当前和未来MPEGforthepastoftelevisionMPEG用于电视的过去System系统TransportStream传送流DSM-CC数字存储媒体—命令与控制Timedmetadata有定时的宏数据Video视频MPEG-2HighProfileMPEG-2高档次Audio音频MPEG-1AudioLayerII音频第2层MPEG-2AACMPEG-2高级音频编码2012/05/022MPEGforthepast,presentandfutureofTVAnassessment评价MPEGhasprovidedthemeansforthetelevisionbusinessonair,cableandsatellitetomigratefromtheanaloguetothedigitalageMPEG对地面、有线和卫星的电视服务从模拟过渡到数字时代，提供各种方法Ithasbeenacollectiveefforts它是集体努力的结果Representativesfromtheentirespectrumofthebroadcastingworldprovidedtheirrequirements来自广播界的方方面面代表已提出各种需求Packagesofpatentlicenceswerecreated(outsideofMPEG)在MPEG之外，已创建成套的专利许可证Todaythereisvirtuallynobroadcastingsystemthatisnotbased,atleastpartially,onMPEGstandards目前没有一个广播系统不是基于MPEG标准（至少部分基于）MPEGforthepast,presentandfutureofTV32012/05/08MPEGforthepresentoftelevisionMPEG用于电视的当前Systems系统CarriageofMPEG-4onMPEG-2TS用于在MPEG-2TS上承载MPEG-4DynamicAdaptiveStreamingoverHTTP(DASH)HTTP(DASH)上的动态自适应流媒体Video视频MPEG-4AdvancedVideoCoding(AVC)MPEG-4高级视频编码3Dextensions各种3D扩展Audio音频VariousformsofAdvancedAudioCoding(AAC)高级音频编码的各种形式UniversalSpeechandAudio(USAC)通用的语音和音频编码2012/05/084MPEGforthepast,presentandfutureofTVAnassessment评价Thedeploymentof2ndgenerationdigitalbroadcastingsystemscontinuessuccessfully第二代数字广播系统的部署继续顺利进行UseoftheAVConMPEG-2TSallowspackingtwiceasmanyprogramsasMPEG-2Videoinananaloguechannel在单个模拟电视频道中，采用MPEG-2TS承载AVC视频，替代MPEG-2视频，可使节目数量翻一番WithIPTVthenotionofbroadcastingisexpandingIPTV正在拓展广播的概念MPEGishelpingthebroadcastingindustryMPEG正在帮助广播工业界Toenrichthebroadcasteduserexperience丰富了广播用户的体验Throughstandardtechnologiesthatservemultiplefields通过标准技术服务于多个领域MPEGforthepast,presentandfutureofTV52012/05/08MPEGforthefutureoftelevisionMPEG用于电视之未来Well,that’swhatIamsupposedtotalkabout…好，下面是我今天准备讨论的…2012/05/086MPEGforthepast,presentandfutureofTVBroadcastingisagreatbusinesstobein…广播业在未来…仍然将是一个巨大的事业Broadcastingisaprovenbusinesswithaconstantrevenueflow广播业已被证实具有稳定的收益流Manytechnologiesappearthat很多技术表现出能够：Canhelpnewcompetingbusinessesbut有助于具有竞争力的新服务Canalsobeusedtoextendthebroadcastingbusiness而且还可用于扩展广播服务MPEGisaneutralbodydevotedtothedevelopmentofstandardtechnologiesforusercommunitiestoexploitMPEG是一个中立团体，致力于开发各类用户群体所需的标准化技术MPEGforthepast,presentandfutureofTV72012/05/08MPEG-H:avideostandardforfutureMPEG-H:用于未来广播的视频标准ISO/IEC23008HighEfficiencyCodingandMediaDeliveryinHeterogeneousEnvironmentsISO/IEC23008：高效编码和异构环境的媒体发送Asuiteofstandardsformediacodinganddelivery用于媒体编码和发送的一整套标准Currentlyscheduledtoappearin3parts目前计划包括三部分：MPEGMediaTransportMPEG媒体传送HighEfficiencyVideoCoding高效视频编码3DAudio3D音频Timeline时间表CD–委员会草案DIS–国际标准草案FDIS–国际标准定稿草案MPEGforthepast,presentandfutureofTV82012/05/08PartCDDISFDISMMT12/0713/0113/07HEVC12/0212/0713/013DAudio14/0414/1015/01ServicecompositioninMMTMMT（多媒体传送流）中的服务组装3DEarthUDcontentsBirdisflying…Birdisflying…鸟在飞…subtitle标题Compositioninformation组装信息friendlywithhtml5与HTML5友好legacybroadcasting传统广播futurebroadcasting未来广播9MMTPackageMMT信息包MPEGforthepast,presentandfutureofTV2012/05/02通用发送的各种内容3D地球CloudsMMTEncapsulatorMMT封装器-ServiceComponentList服务组件的清单-Componentlocation组件的位置-Compositionrelationship组装的关系-QoErequirement封装质量的需求-Howtodeliver如何发送-Howtoconsume如何消费Web互联网Video视频File文件-Configuration配置-Adaptivedelivery自适应发送-Sync,Delay,Losscontrol同步，延迟，丢包控制MMTFrameMTT数据帧pull拉动pullSmartdeliveryinClouds云计算中的智能发送102012/05/08Mash-upservice混成服务Service1(MMTPackage1)服务1（MMT信息包1）Service2(MMTPackage2)服务2（MMT信息包2）MMTassetsMMT各种资产Audio音频Video1视频1Widget小工具菜单Webpage网页Video2视频2112012/05/08MPEGforthepast,presentandfutureofTVSecondscreenmanagement第二屏幕的管理AdditionalInformationwithLiveContent(HTML)实况内容的附加信息（HTML）Videocontenton2nddevice在第二设备上的视频内容Compositioninformation组装信息device1…设备1…device2…设备2…MMTPackageMMT信息包122012/05/08MPEGforthepast,presentandfutureofTVMPEG-Hpart2HighEfficiencyVideoCodingMPEG-H第2部分高效视频编码Primarygoal:≥50%bettercompressionthanAVC最初目标：压缩效率比AVC提高≥50%Forlargedisplays(e.g.4kx2k)用于大屏幕(例如4kx2k)Formobile(e.g.WVGA)用于移动服务(例如，WVGA)DevelopedjointlywithITU-TbyJointCollaborativeTeam(JCT)onVideoCoding由MPEG与ITU-T联合成立的视频协作组制定TechnicallyinthesamestreamofpastMPEGVideoCodingstandards(AVCandpriorstandards)技术上使用与MPEG以前的视频编码标准(AVC及以前标准)相同的传送流CurrentlyatCommitteeDraftlevel目前处于委员会草案的阶段MPEGforthepast,presentandfutureofTV132012/05/08HEVCvsAVCSubjectivePerformanceMeasurementsHEVC和AVC主观性能测试的对比PreliminarysubjectivetestscarriedoutforHEVCCommitteeDraft对HEVC委员会草案已进行初步的主观测试Reasonablysmallandnon-overlappingconfidenceintervals合理较小的和不重叠的信任度间隔Averageratesavingsatsame(interpolated)MOSpoints在相同的(内插的)MOS(评分平均)点，得出可节省的平均比特率HEVCwith67%lowerrateinclassB(FullHD)在B类(全高清)中HEVC的比特率要低67%HEVCwith49%lowerrateinclassC(WVGA)在C类(WVGA)中HEVC的比特率要低49%HEVCwith58%lowerrateoverallHEVC整体比特率要低58%2012/05/08MPEGforthepast,presentandfutureofTV14Aperformancesample一个性能样本2012/05/08MPEGforthepast,presentandfutureofTV15Forthosetechnologyaware…涉及的有关技术…Block-based/Variableblocksizes基于块的/可变块尺寸Blockmotioncompensation块的运动补偿Fractional-pelmotionvectors分像素的运动矢量Spatialintraprediction空间域的帧内预测Spatialtransformofresidualdifference残差值的空间域