ITU-TH.241(052006)(英)Extendedvideoprocedures…….pdf

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1、InternationalTelecommunicationUnionITU-TH.241TELECOMMUNICATION(05/2006)STANDARDIZATIONSECTOROFITUSERIESH:AUDIOVISUALANDMULTIMEDIASYSTEMSInfrastructureofaudiovisualservices–CommunicationproceduresExtendedvideoproceduresandcontrolsignalsforH.300-seriesterminalsITU-TRecommendationH.241ITU-TH-SERIESREC

2、OMMENDATIONSAUDIOVISUALANDMULTIMEDIASYSTEMSCHARACTERISTICSOFVISUALTELEPHONESYSTEMSH.100–H.199INFRASTRUCTUREOFAUDIOVISUALSERVICESGeneralH.200–H.219TransmissionmultiplexingandsynchronizationH.220–H.229SystemsaspectsH.230–H.239CommunicationproceduresH.240–H.259CodingofmovingvideoH.260–H.279Relatedsyst

3、emsaspectsH.280–H.299SystemsandterminalequipmentforaudiovisualservicesH.300–H.349DirectoryservicesarchitectureforaudiovisualandmultimediaservicesH.350–H.359QualityofservicearchitectureforaudiovisualandmultimediaservicesH.360–H.369SupplementaryservicesformultimediaH.450–H.499MOBILITYANDCOLLABORATION

4、PROCEDURESOverviewofMobilityandCollaboration,definitions,protocolsandproceduresH.500–H.509MobilityforH-SeriesmultimediasystemsandservicesH.510–H.519MobilemultimediacollaborationapplicationsandservicesH.520–H.529SecurityformobilemultimediasystemsandservicesH.530–H.539Securityformobilemultimediacolla

5、borationapplicationsandservicesH.540–H.549MobilityinterworkingproceduresH.550–H.559Mobilemultimediacollaborationinter-workingproceduresH.560–H.569BROADBANDANDTRIPLE-PLAYMULTIMEDIASERVICESBroadbandmultimediaservicesoverVDSLH.610–H.619Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-T

6、RecommendationH.241ExtendedvideoproceduresandcontrolsignalsforH.300-seriesterminalsSummaryThisRecommendationdefinestheuseofadvancedvideocodecs,includingITU-TRec.H.264,inITU-TRecsH.310,H.320,H.321,H.322,H.323andH.324terminals.ItalsodefinesgenericextendedsignallingforusewithallvideocodecsintheH.300-s

7、eriesterminals.ThisrevisedversionaddsclarificationsregardingH.264VCLHRD(TypeIHRD)versusNALHRD(TypeIIHRD)bitrateusage,sampleaspectratiocapabilitiesforH.264,signallingforReducedComplexityDecodingOperation(RCD