ITU H.263:2005
ITU H.263:2005 Video Coding For Low Bit Rate Communication Specifies a coded representation that can be used for compressing the moving picture component of audio-visual services at low bit rates.
Table of Contents
1Scope2References
3Briefspecification
3.1Videoinputandoutput
3.2Digitaloutputandinput
3.3Samplingfrequency
3.4Sourcecodingalgorithm
3.5Bitrate
3.6Buffering
3.7Symmetryoftransmission
3.8Errorhandling
3.9Multipointoperation
4Sourcecoder
4.1Sourceformat
4.2Videosourcecodingalgorithm
4.3Codingcontrol
4.4Forcedupdating
4.5Bytealignmentofstartcodes
5Syntaxandsemantics
5.1Picturelayer
5.2GroupofBlocksLayer
5.3Macroblocklayer
5.4Blocklayer
6Decodingprocess
6.1Motioncompensation
6.2Coefficientsdecoding
6.3Reconstructionofblocks
AnnexA-Inversetransformaccuracyspecification
AnnexB-HypotheticalReferenceDecoder
AnnexC-Considerationsformultipoint
C.1Freezepicturerequest
C.2Fastupdaterequest
C.3Freezepicturerelease
C.4ContinuousPresenceMultipointandVideoMultiplexing
(CPM)
AnnexD-UnrestrictedMotionVectormode
D.1Motionvectorsoverpictureboundaries
D.2Extensionofthemotionvectorrange
AnnexE-Syntax-basedArithmeticCodingmode
E.1Introduction
E.2SpecificationofSACencoder
E.3SpecificationofSACdecoder
E.4Syntax
E.5PSC_FIFO
E.6Headerlayersymbols
E.7MacroblockandBlocklayersymbols
E.8SACmodels
AnnexF-AdvancedPredictionmode
F.1Introduction
F.2Fourmotionvectorspermacroblock
F.3Overlappedmotioncompensationforluminance
AnnexG-PB-framesmode
G.1Introduction
G.2PB-framesandINTRAblocks
G.3Blocklayer
G.4CalculationofvectorsfortheB-pictureinaPB-frame
G.5PredictionofaB-blockinaPB-frame
AnnexH-Forwarderrorcorrectionforcodedvideosignal
H.1Introduction
H.2Errorcorrectionframing
H.3Errorcorrectingcode
H.4Relocktimeforerrorcorrectorframing
AnnexI-AdvancedINTRACodingmode
I.1Introduction
I.2Syntax
I.3Decodingprocess
AnnexJ-DeblockingFiltermode
J.1Introduction
J.2RelationtoUMVandAPmodes(AnnexesDandF)
J.3Definitionofthedeblockingedgefilter
AnnexK-SliceStructuredmode
K.1Introduction
K.2Structureofslicelayer
AnnexL-SupplementalEnhancementInformationSpecification
L.1Introduction
L.2PSUPPformat
L.3DoNothing
L.4Full-PictureFreezeRequest
L.5Partial-PictureFreezeRequest
L.6ResizingPartial-PictureFreezeRequest
L.7Partial-PictureFreeze-ReleaseRequest
L.8Full-PictureSnapshotTag
L.9Partial-PictureSnapshotTag
L.10VideoTimeSegmentStartTag
L.11VideoTimeSegmentEndTag
L.12ProgressiveRefinementSegmentStartTag
L.13ProgressiveRefinementSegmentEndTag
L.14ChromaKeyingInformation
L.15ExtendedFunctionType
AnnexM-ImprovedPB-framesmode
M.1Introduction
M.2B[PB]-macroblockpredictionmodes
M.3Calculationofvectorsforbidirectionalpredictionof
atheB-macroblock
M.4MODBtable
AnnexN-ReferencePictureSelectionmode
N.1Introduction
N.2Videosourcecodingalgorithm
N.3Channelforback-channelmessages
N.4Syntax
N.5Decoderprocess
AnnexO-Temporal,SNR,andSpatialScalabilitymode
O.1Overview
O.2Transmissionorderofpictures
O.3Picturelayersyntax
O.4Macroblocklayersyntax
O.5Motionvectordecoding
O.6Interpolationfilters
AnnexP-Referencepictureresampling
P.1Introduction
P.2Syntax
P.3Resamplingalgorithm
P.4Exampleofimplementation
P.5Factor-of-4resampling
AnnexQ-Reduced-ResolutionUpdatemode
Q.1Introduction
Q.2Decodingprocedure
Q.3Extensionofreferencedpicture
Q.4Reconstructionofmotionvectors
Q.5Enlargedoverlappedmotioncompensationforluminance
Q.6Upsamplingofthereduced-resolutionreconstructed
predictionerror
Q.7Blockboundaryfilter
AnnexR-IndependentSegmentDecodingmode
R.1Introduction
R.2Modeoperation
R.3Constraintsonusage
AnnexS-AlternativeINTERVLCmode
S.1Introduction
S.2AlternativeINTERVLCforcoefficients
S.3AlternativeINTERVLCforCBPY
AnnexT-ModifiedQuantizationmode
T.1Introduction
T.2ModifiedDQUANTUpdate
T.3Alteredquantizationstepsizeforchrominance
coefficients
T.4Modifiedcoefficientrange
T.5Usagerestrictions
AnnexU-Enhancedreferencepictureselectionmode
U.1Introduction
U.2Videosourcecodingalgorithm
U.3Forward-channelsyntax
U.4Decoderprocess
U.5Back-channelmessages
AnnexV-Data-partitionedslicemode
V.1Scope
V.2Structureofdatapartitioning
V.3Interactionwithotheroptionalmodes
AnnexW-Additionalsupplementalenhancementinformation
specification
W.1Scope
W.2References
W.3AdditionalFTYPEValues
W.4RecommendedmaximumnumberofPSUPPoctets
W.5Fixed-pointIDCT
W.6Picturemessage
AnnexX-Profilesandlevelsdefinition
X.1Scope
X.2Profilesofpreferredmodesupport
X.3Pictureformatsandpictureclockfrequencies
X.4Levelsofperformancecapability
X.5GenericcapabilitydefinitionsforusewithITU-T
RecommendationH.245
AppendixI-Errortracking
I.1Introduction
I.2Errortracking
AppendixII-RecommendedOptionalEnhancement