媒体新技术革命

Copyright©ShipengLi@MSRA2006Media2.0–媒体新技术革命?李世鹏博士微软亚洲研究院高级研究员、院长助理网络多媒体组主任Copyright©ShipengLi@MSRA2006Outline•Introduction–What’shappening？–Web2.0•Media2.0–mymedia5-D’s–Democratizedlifecycle–Data-drivenvaluechain–Decoupledsystem–Decomposedcontents–De-centralizedbusinessmodel•DemosCopyright©ShipengLi@MSRA2006Introduction–What’shappening?•youtube.com–Usercontributedcontents(UCC)–Usercommunity–Blogging/tagging/commenting/rating•blinx.com–Contentaggregationandvideosearch•PPLive/Coolstream–P2Pstreaming•Adobe’sApolloproject–Flashplayerjumpsbeyondbrowser•AppleiPod–iTuneservices&podcasting•MicrosoftZune–Connectedmediaexperienceandcommunitysharing•GoogleAdsense–Long-tailadvertisementCopyright©ShipengLi@MSRA2006Introduction–Web2.0•Webasaplatform•Harnessingcollectiveintelligence•DataisthenextIntelInside•Endofthesoftwarereleasecycle•Lightweightprogrammingmodel•SoftwareabovethelevelofasingledeviceTomO’Reilly’s“WhatisWeb2.0”=1Copyright©ShipengLi@MSRA2006Media2.0–MyMedia5-D’s•Democratizedmedialifecycle•Data-drivenmediavaluechain•Decoupledmediasystem•Decomposedmediacontents•DecentralizedmediabusinessmodelCopyright©ShipengLi@MSRA2006Acquisition·Record·Capture·DownloadEdit·Editing·Authoring·Pre-proc.Representation·Compression·Packing·DRMAdaptation·Transcoding·Trans-adapt.Dissemination·Network·StorageReception·Err-correction·Err-conceal.·Post-proc.Presentation·Decoding·RenderingWiredWirelessP2PManagement·Metadataacquisition·Contentanalysis·DRMMediaAccess/Service·Search·Sync·Sharing·RSSmetadata/contextUserMediaLifeCycleCopyright©ShipengLi@MSRA2006DemocratizedMediaLifeCycle•Grassrootscontributions–Capturing/Authoring–Publishing/Distribution/Sharing–Referring/Linking–Commenting/Rating•Applications–Usercontributedmediacontents–VideoWiki–P2Pdownload/streaming–Mediatagging–Communityrecommendation/sharing•Technologies:toolsforuserstoeasycaptureandauthormediacontents–LazyMedia–AutoMovieCopyright©ShipengLi@MSRA2006Data-drivenMediaValueChain•Richdatabeyondthemediadataitself–Mediadata:mediacontentitself–Userdata:usercomments/rating/tagging–Metadata:informationaboutthemediacontents,suchaslocation,time,origin,contentdescriptors,etc.,eitherthroughhumaninteractionorautomaticgeneration–Linkagedata:linksbetweenmediacontentstoturnindividualmediaislandsintomedianetworks–Hitsdata:Mediapopularity•Mediavaluebeyondthemediacontentswithrichdata/context–Facilitatemediamanagement/search–Createmediasocialnetworks–Mineuserprofile/preferencesCopyright©ShipengLi@MSRA2006DecoupledMediaSystem•On-demandreconfigurableandadaptivemediaprocessingpipe•LiquidSilverprojectatMSRA–MimicaUnix-commandlikearchitecture–Breakawholemediaprocessintobasicunits–Re-useunitsasmuchaspossible•Features–Lightweightmodules•Allprocessingunitsareindependent•Connectedbydataflow–Pluggablecomponents•Easyreplacementofexistingunits•Onlinedownloadable•Shortreleasecycle–Reconfigurablethroughwebservices–AutomaticallyadapttonetworksanduserdevicecapabilityCopyright©ShipengLi@MSRA2006DecomposedMediaContents•Decomposemediacontentsintosmallunitforeasyanalysisandaccess•Mediaanalogytotext–Toenablemediaanalysisaseasyastext,–scenesassections,shotsasparagraphs,framesaswords•Content-basedsearch–Traditionalvideosearch•basedonsearch“directtext”–surroundingtextcontext•“Directtext”!=Content–Content-basedvideoindexing•From“directtext”to“hiddentext”•Convertlow-levelfeaturestosemanticterms/keywords/ontology•Content-basedvideopresentation–EnablefastvideocontentbrowsingontheWeb•Innermediahyperlink–LinkintomediacontentsratherthantoawholeclipCopyright©ShipengLi@MSRA2006DecentralizedMediaBusinessModel•Centralizedbig-headmodelDistributedlong-tailmodel–Googleadsense,MicrosoftAdLive•ValuegeneratedbymediacontentonlyValue-addedbyrelatedrichmediadata–Usebahaviorprofiling,targetedads•Centralservermodelsuperdistributionmodel–Takeadvantagesofsocialnetworksandmicro-payment–“Super-girl”phenomenon•Thedirectvalueofmediacontentmaybedilutedevenofferedforfree–Thegreatervaluemayberecollectedthroughothermeansabove•Technicalchallenges:–TargetedAdsinmediaspace–Non-intrusiveAdsinsertionCopyright©ShipengLi@MSRA2006LiquidSilverDemoCopyright©ShipengLi@MSRA2006Content-basedVideoSearch&PresentationDemoCopyright©ShipengLi@MSRA2006Summary•Media2.0couldpotentiallybringarevolutionininternetmedia•The5-DfeaturesofMedia2.0canbefurthersummarizedintoonesentence:FromGrassrootstoGrassroots从群众中来到群众中去•Beyondtechnicalchallenges–Politicsandlocallaws–GovernmentengagementCopyright©ShipengLi@MSRA2006Thanks![e-mail]