UniversalSerialBusDeviceClassDefinitionforVideoDevices:H.264PayloadFrequentlyAskedQuestions(FAQ)Revision1.00April26,2011USBDeviceClassDefinitionforVideoDevicesH.264Payload-FAQRevisionApril26,iContributorsRossCutlerMicrosoftCorp.Ming-ChiehLeeMicrosoftCorp.StephenCooperMicrosoftCorp.MaribelFigueraMicrosoftCorp.RichardWebbMicrosoftCorp.AndreiJefremovSkypeRemyZimmermannLogitechInc.ChandrashekharRaoLogitechInc.USBDeviceClassDefinitionforVideoDevicesH.264Payload-FAQRevisionApril26,iCopyright©2011,USBImplementersForum,Inc.Allrightsreserved.ALICENSEISHEREBYGRANTEDTOREPRODUCETHISSPECIFICATIONFORINTERNALUSEONLY.NOOTHERLICENSE,EXPRESSORIMPLIED,BYESTOPPELOROTHERWISE,ISGRANTEDORINTENDEDHEREBY.USB-IFANDTHEAUTHORSOFTHISSPECIFICATIONEXPRESSLYDISCLAIMALLLIABILITYFORINFRINGEMENTOFINTELLECTUALPROPERTYRIGHTS,RELATINGTOIMPLEMENTATIONOFINFORMATIONINTHISSPECIFICATION.USB-IFANDTHEAUTHORSOFTHISSPECIFICATIONALSODONOTWARRANTORREPRESENTTHATSUCHIMPLEMENTATION(S)WILLNOTIN-FRINGETHEINTELLECTUALPROPERTYRIGHTSOFOTHERS.THISSPECIFICATIONISPROVIDED“ASIS”ANDWITHNOWARRANTIES,EXPRESSORIMPLIED,STATUTORYOROTHERWISE.ALLWARRANTIESAREEXPRESSLYDISCLAIMED.NOWARRAN-TYOFMERCHANTABILITY,NOWARRANTYOFNON-INFRINGEMENT,NOWARRANTYOFFIT-NESSFORANYPARTICULARPURPOSE,ANDNOWARRANTYARISINGOUTOFANYPROPOSAL,SPECIFICATION,ORSAMPLE.INNOEVENTWILLUSB-IFORUSB-IFMEMBERSBELIABLETOANOTHERFORTHECOSTOFPROCURINGSUBSTITUTEGOODSORSERVICES,LOSTPROFITS,LOSSOFUSE,LOSSOFDATAORANYINCIDENTAL,CONSEQUENTIAL,INDIRECT,ORSPECIALDAMAGES,WHETHERUNDERCONTRACT,TORT,WARRANTY,OROTHERWISE,ARISINGINANYWAYOUTOFTHEUSEOFTHISSPECIFICATION,WHETHERORNOTSUCHPARTYHADADVANCENOTICEOFTHEPOSSI-BILITYOFSUCHDAMAGES.Allproductnamesaretrademarks,registeredtrademarks,orservicemarksoftheirrespectiveowners.AVC/H.264DisclaimerAnyimplementationofthespecificationdescribedhereinwouldrequireaMPEGLAAVC/H.264PatentPortfoliolicensetoessentialpatentrightsfortheAVC/H.264(MPEG-4Part10)digitalvideocodingstandard.Seehttp://www.MPEGLA.com.USBDeviceClassDefinitionforVideoDevicesH.264Payload-FAQRevisionApril26,iRevisionHistoryVersionDateDescription0.10July12,2010InitialDraft0.80December16,2010Updated0.81December17,2010Updated0.82December20,2010Copyrightupdates0.83January11,2011AddedmoreclarificationsregardingGET_DEFandGET_MAX0.84January17,2011Updated0.85February1,2011Updatedcomments,copyright0.86March8,2011Updatedwithlatest0.88specifications.AddedwLayerID.0.90April4,2011AddedLTR,Framerate.0.91April12,2011UpdatedafterReykjavikF2Fmeeting0.92April13,2011UpdatedwithFormattingandcleanup0.93April15,2011UpdatedwithLTRcommentsandaddedbEntropyCABAC0.94April22,2011Updatedafterreview0.95April22,2011IncludedStephen’supdates1.00Aprril26,2011UpdatedforXUcontrolchangetableref.USBDeviceClassDefinitionforVideoDevicesH.264Payload-FAQRevisionApril26,vTableofContents1Introduction.........................................................................................................................................11.1Purpose........................................................................................................................................11.2Scope...........................................................................................................................................11.3RelatedDocuments..............................................................................................
