<4D6963726F736F667420576F7264202D20313035A4E2ABF9A6A1A6E6B0CABCC6A6ECB8CBB86DA4A73347504D5034A668B443C5E9B5F8B054BC76A4F9C0C9A4BAAE65B0B0C5DCB0BBB4FAAABAACE3A8732E646F63>
LinuxMAC
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DCT
Quantizer Information(DQUANT)-1-212 [131]H.263
: H.263
YUVRGB
: 2.2 H.264
Journal of Information, Technology and Society 76
(NALNetwork Abstraction Layer)VCL
NALH.264
: H.264 2.3 MPEG-4(ISO/IEC 14496)
MPEG-4MPEG-1MPEG-2
VO
(VOPVideo Object Plane)(AVOAudio/Video Objects) MPEG-4MPEG-45 (VSVisual Object Sequence)(VO)
(VOLVideo Object Layer)(GOVGroup Of Video Object Planes)
(VOP)
MP4MPEG-4
MPEG-4 Part 14 ISO/IEC14496-12:2004(MPEG-4 Part 12: ISO base media file format)Apple
QuickTime MPEG-4 Part 14 (MP4)MOV
MP4
77 3GP/MP4
.MP43(1)MPEG-4
.MP4(2)MPEG-4
.M4VMP4 (3)3GPMPEG-4 Part 12
MP4.3GP.3G2MPEG-4(
H.263AMR) MP4
MP4(Meta Data)(Media Data)
//
SampleVOPMP4Sample
DurationTrackSample
3GP(3GPP)(The Third GenerationPartnership Project (3GPP))3G UMTS
3G2G3G2(3GPP2)3GGP2 3G CDMA2000
3GP3GP3GP
Part 10(AVC/H.264)3GPPISO
AMRH.2633GPPISO
atomMP4/3GP
atomatomatom
ASCIIatom
MPEG-4JPEG-2000Major_Brand
Minor_Version Compatible_Brands MPEG-4
Major_BrandMP423GPMajor_Brand
3GP4isomMdat atom(Movie sample data )
atomMoov atom (Movie sample data)Movie Header(atommvhd)track atom(atom
trak)Movie HeaderMovie data/
/Movie dataTime Scale Movie data
(1) Track atomsingle tracktrack
trackmoov atom
track atomHeaderMedia data
TrackMeata dataTrack atomatom
tkhd atom (Track Header atoms)mdia atom (Media atoms)tkhd atom
(1)track header
(UTC)(UTC)Track ID(
)()media atom
media atom(‘mdia’)Media header atom(‘mdhd’)mdhd atom’hdlr’atom (a handler reference atom)’minf’atom (media information atom)’udta’ atom(user data atom)
Media header atomsmedia atom
Handler reference atom
Media information atom
atoms(Video media information atoms)atom
atomatomtrack atom
TrackSampleMP4
”hdlr”Media dataMedia data type
(3)Data reference atomatom”dref”TrackMedia data
Media dataMP4
SampleSample
description atomatom”stsd”Sample Description Table
tableMedia dataMedia trackMPEG-4 ESDs(Elementary Stream Descriptions)Hint track
(2)Time-to-sample atomatom”stts”Sample
DurationatomSample(3)Sync sample atomatom”stss”atomMedia datakey Picturekey Picture /
(4)Sample-to-chunk atomatom
”stsc”ChunkSample
atom”stsz”Samplesize32-bit
MP4Chunkoffsetbytes32-bit64-bit
Journal of Information, Technology and Society 80
atom decConfigDescr
decSpecificInfoinfoMPEG-4
MPEG-4ESD(Elementary Descriptor) 3.2 MP4/3GP ATOM
Nokia E5102112007.MP4MPEG-4atom
0284-7ftyp atom 8-11majorBrand
MP4212-15minorVersion016-27
compatibleBrandsMP423GP4isom28-31mdat atom(media data container)1084783
:WinHexMP4atom 108482129C1(1068110)moov
atom(container for all the meta-data) 108481910
10955081010848306Cmvhd atom(movie header)
1084839-1084842(creationTime)327684393210Fri Nov 02 18:25:32 2007 UTC1084843-1084846(modificationTime)327684393210Fri Nov 02 18:25:32 2007 UTC1084847-1084850timescale2710
(1000010)1084851-1084854duration02FB05(19533310) 10849370AF1(279310)trak atom(container
for an individual track or stream )1084946005C(8410)tkhd atom(track header)1084955 -1084958(creationTime)
327684393210 Fri Nov 02 18:25:32 2007 UTC1084959 -1084962
81 3GP/MP4
(modificationTime)327684393210Fri Nov 02 18:25:32 2007 UTC1084971 -1084974duration02FB05(19533310)1085025-1085028
0140(32010)1085029-108503200F0(24010) 1085037 0A8D (269310) mdia
atom(container for media information in a trak)108504620
mdhd atom(media header)1085055-1085058(creationTime) 327684393210Fri Nov 02 18:25:32 2007 UTC1085059-1085062
(modificationTime)327684393210 Fri Nov 02 18:25:32 2007 UTC
1085063-1085066timescale7530(3000010)1085067-1085070
duration0008F110(58600010) 1085078 21 hdlr atom(handler type)
1085063-1085066handlerTypevide1085110
108511914vmhd atom(video media header)1085139
24dinf atom(data information box)10851471C
dref atom(data reference atom) 10851740A44(255610)stbl atom(sample
table atom)1085183A8stsd atom(sample descriptions) 108519998MP4v atom(visual sample description )
1085228-10852290140(32010)1085230-1085231
00F0(24010)108528542esds atom(elementary stream description)
: WhinHexstts atom 10853151D(2910)decSpecificInfo descriptor
info 000001B002000001B50ECF0000010 0000001200086C5D4C285020F0A311085350
0300(76010)stts atom(time-to-sample)10853635E
(9410)entryCount
10861191Cstsc atom(sample-to-chunk)
1086128-10861311entryCount11086146
offset)1086163BA(18610)entryCount
: WinHexstss atom Motorola U9moto1.3GP3GP(H.263)atom
4.16
: 3GP 32‘0x14’”20”ftype
atom 0 20 4-7 ftyp atom 8-11
majorBrand3GP412-15minorVersion016-27 compatibleBrands3GP428-31mdat atom(media data container) 133242
20898274A(1005010)moov
83 3GP/MP4
: 3GP moov atom
2090C0D19(334510)trak atom(container
for an individual track or stream )209155C(8410)tkhd atom(track header) 2091E-20921 (creationTime)
327849818010Wed Nov 21 21:56:20 2007 UTC20922-20925
(modificationTime)327849818010Wed Nov 21 21:56:20 2007 UTC20930 duration369B(1397910)20964-20967
0140(32010)20968-2096B00F0(24010) 209700CB5(324510)mdia atom(container
for media information in a trak)2097920mdhd atom(media header)20982-20985(creationTime)327849818010
Wed Nov 21 21:56:20 2007 UTC20986-20989(modificationTime)
327849818010Wed Nov 21 21:56:20 2007 UTC2098C-2098Dtimescale
03E8(100010)20990-20991duration369B(1397910) 2099930hdlr atom(handler type)209A6-209A9
handlerTypevide209B6-209C1handler name
Video stream209C80C5D(315710)
minf atom(media information container)209D114vmhd atom(video media header)209E524dinf atom(data information box)209ED1Cdref atom(data reference atom)
20A080C1D(309310)stbl atom(sample table atom)20A1275stsd atom(sample descriptions)
20A2165s263 atom(H263 sample description)
20A3E-20A3F00B0(17610)20A40-20A41
0090(14410)20A770Fd263 atom(decoder specific info H263 video)
Journal of Information, Technology and Society 84
: 3GP d263stts atom 20A7C-20A7Fvendormoto(183602084710)20A81
h263Level0A(1010)20A850598
(142410)stts atom(time-to-sample)20A92B1(17710) entryCount
: 3GP stssatom 2101E10(1610)stss atom(sync (key I-Picture) sample
map)21027-2102A00000000entryCount0
2102E1Cstsc atom(sample-to-chunk)2103A
01entryCount12104902F0(75210) stsz atom(sample sizes)2105AB7(18310)sampleCount
: 3GP/MP4/

3GP,3G 2,MP4,Mortola,Nokia,Sam sung,SonyEricsson

3GP/MP4
ATOM 33GP/MP4
4WinHex3GP/MP4
esds atomd263 atom atomstts atomstsz atomstco atomI-frame
esds atomd263 atomMD53GP/MP4
5453GP/MP4
4esds atomd263 atomMD5 76esds atomd263 atom MD54
JPEGUltraCompare Professional
Journal of Information, Technology and Society 86
93GP/MP4
MP4
atomMP4
5.1 3GP/MP4
16114PDA3GP/MP4640 3GP d263(decoder specific info H263 video) vendor atom
stts(decoding) time-to-sample entries atomstsz(sample size) entries atomstco(chunk offset partial data-offset information) atomstss(sync (key I-Picture) sample map) atomstsc sample-to-chunk partial data-offset information atomhdlr handler type atomatom I-PictureP-PictureI-PictureP-Picture
(MBMacro block)(quantizer)MP4
d263(decoder specific info H263 video) vendor atom12
3GP d263 atom
MP4esds atom 5.2
stts atom entry countstsz atom entry countstco atomentry count I-Picture12152050250
3GP/MP4Esds atom decspecificinfo3GP(h.263) d263 vendor atom 5.3
453GP/MP43GP/MP4
224Aimersoft Video Editor 114Agogo Video to ipod/cellphone/MP462
100%Tkhd atomcreated time
3GP/MP4
I-PICTURE(frame)I-picture quantizer
P-picture quantizer3GP/MP4
modified time YES YES YES
Stts atom entry count1 YES YES YES stsz stco atomentry count
YES YES YES
) YES(12)
Lavc51.25.0 Lavc51.57.0
3GP d263 vendor atom FFMP FFMP 5 5 5 [1] “”2009
2009 [2] James Luck and Mark Stokes“An Integrated Approach to Recovering Deleted Files from NAND
Flash Data” SMALL SCALE DIGITAL DEVICE FORENSICS VOL.2(1),2008. [3] Karel Rijkse “H.263:Video coding for low bit rate communication” Communication
Magazine,IEEEVOL.34(12),1996. [4] ISO/IEC”Information technology - Coding of audio-visual objects - Pt.12: ISO base media
format” Ref. No. ISO/IEC 14496-12:2005/Cor.1:2005(E),2005. [5] ISO/IEC “Information technology - Coding of audio-visual objects - Pt.14: MP4 file format”, Ref.
No. ISO/IEC 14496-14:2003(E),2003. [6] F. Pereira and T. Ebrahimi , “The MPEG-4 Book, Prentice Hall IMSC multimedia series”Prentice