十六进制码流分析：
ftyp Box
00 00 00 1C: size
,28,表示此BOX有28个字节，表示长度的四个字节也计算在内。以下同
66 74 79 70: type,表示BOX
TYPE,此处为ftyp
6D 70 34 32: 可能是兼容的格式信息，/////mp42
00 00 00
00: 可能是插入的空字节，/////也可能是version ，flags
6D 70 34
32: 可能是兼容的格式信息，mp42///// major-brand
6D 70 34
31: 可能是兼容的格式信息，mp41///// minor-version
69 73 6F 6D: isom,
ftyp中的最后一个标识，compatible-brands[]; // to end of the box
The brand
‘mp41’ is defined as identifying version 1 of this specification
(ISO/IEC 14496-1:2001), and the brand ‘mp42’ identifies this version of
the specification; at least one of these brands shall appear in the
compatible-brands list in the file-type box, in all files conforming to
this specification.
moov Box
00 03 B0 59: size of
moov.241753个字节
6D 6F 6F 76: moov
mvhd Box
00 00 00
6C: size,mvhd Box的大小为108个字节
6D 76 68 64: mvhd
00 00 00
00: version,flags
BE EE 87
C5: creation-time创建文件的时间,是距离1904年1月1日0点的秒数
BE EE 87
C5: modifiation-time修改文件的时间，
00 01 5F
90: timescale时标，时间刻度的单位，为1/90 000秒
01 A8 61 B8: duration持续时间
00
01 00 00: rate播放描述的等级
01 00: volume播放时的音量
00
00: 保留的16bits的0
00 00 00 00: 保留的32bits的0
00 00 00 00:
保留的32bits的0
00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00
40 00 00
00 : matrix给视频提供的转换矩阵
00 00 00 00 00 00 00 00 00 00 00 00
00
00 00 00 00 00 00 00 00 00 00 00: 6个32bits的pre-defined 的0
00 01
00 CA: next-track-ID下一个轨迹ID
iods Box
00 00 00 21: size of
iods,33个字节
69 6F 64 73: iods, Initial Object Descriptor
00 00 00
00: version,flags
10 13 00 4F: 可能是OD, Object Descriptor
FF FF 0F
FE:
FF 0E 04 00:
00 00 01 0E:
04 00 00 00:
02
udta
Box
00 00 06 8F: size of udta ,1679
75 64 74 61: udta,
uuid
Box
00 00 04 A9: size of uuid,1193
75 75 69 64: uuid
F7 8C
AA 0C 36 BE 4C E9 88 D2 03 C2 56 DA BE B2 : 由于boxtype =
uuid而定义的16个字节的usertype
EES-3-0-410
VE
AE
AudioEncoder-2-1-11
V
bitRate=2000000bps
V keyFrame Period In Ms=10000
V number of
Pass=2
V progressive Interlaced=0
V rateControlMode=cbr
V
smoothVsSharp=0
V sourceNature=natural
V useBFrame
=false.此处表明本码流没有使用B帧
V videoEncoderType=mpeg4
V advVideo
EncoderType=mpeg4
V allowBitRateUnderflow=false
V change Rgb Yuv
Conversion=false
V setCustomBitmapSize=false
V
useCustomPixedAspectRatio=false
V useExpertFeaturesASP=false
V
useMotionFiltering=false
V useVideoPacket=false
V vbvSizeInMs=1000
V
burnLogo=false
V changeframerate=false
V useColorAdjustment=false
V
useCropFilter=false
V useScaleFilter=false
V
useSpatialFilter=false
V useTimecodes=false
A
audioEncoderType=aac
A bitRate=64000bps
A
useAutomaticBandwidth=true
A useMS=true
A balanceLeftRight=0
A
volumeInDB=0
starttime=0
stoptime=9223372036854775807，
MTUSize=1448
exportType=mp4
hinted=true
progressiveDownload=true
allowDebugInformationInStream=true
avoidQuickTime6Warnings=false
forceETV15compatibility=false
forcePlayerCompatibility=false
multiThreadedOptimization=0
openAVIWith=DirectShow
previewOnOff=1
previewlayout=0
showEncodingStatistics=true
.......................
hnti
Box
00 00 01 DE:size of hnti,478
68 6E 74 69:hnti
rtp Box
00
00 01 D6:size of rtp,470
72 74 70 20:rtp
73 64 70 20:sdp
a=mpeg4-iod:”data:application/mpeg4-iod;
base64
................................
trak
Box
00 00 01 A4: size of trak,420
74 72 61 6B: trak
tkhd
Box
00 00 00 5C: size of tkhd,92
74 6B 68 64: tkhd, track head
box
00 00 00 01: 00,version; 00 00 01,track enable flags
BE EE
87 C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 00 00 01: track-ID
00 00
00 00: 保留的32bits的0
01 A8 5E 16: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
00 00
00 00：width，if track_is_visual 0x01400000 else 0
00 00 00
00：height，if track_is_visual 0x00F00000 else 0
mdia Box
00
00 01 28: size of mdia,296
6D 64 69 61: mdia
mdhd Box
00
00 00 20: size of mdhd ,32
6D 64 68 64: mdhd
00 00 00
00: version
BE EE 87 C5: creation-time
BE EE 87
C5: modification-time
00 00 03 E8: timescale
00 04 B7
17: duration
0 :pad
10101 01110 00100: 3个5bits的language
00
00 ：pre-defined 0
hdlr Box
00 00 00 21：size of hdlr,33
68
64 6C 72: hdlr
00 00 00 00: version
00 00 00 00: pre-defined 0
6F
64 73 6D: odsm,handler-type. ObjectDescriptorStream
00 00 00 00
00 00 00 00 00 00 00 00 : 3个reserved
00 ：string name
minf Box
00
00 00 DF: size of minf,223
6D 69 6E 66: minf
nmhd Box
00
00 00 0C: size of nmhd,12
6E 6D 68 64: nmhd
00 00 00
00: version
dinf Box
00 00 00 24: size of dinf,36
64 69
6E 66: dinf
dref Box
00 00 00 1C: size of dref,28
64 72
65 66: dref
00 00 00 00: version
00 00 00 01: entry-count
url
Box
00 00 00 0C: size of url ,12
75 72 6C 20: url
00 00 00
01: location
stbl Box
00 00 00 A7: size of stbl,167
73 74
62 6C: stbl
stsd Box
00 00 00 43: size of stsd,67
73 74
73 64: stsd
00 00 00 00: version,flags
00 00 00 01: entry-count
mp4s
Box
00 00 00 33: size of mp4s, 51
6D 70 34 73: mp4s
00 00 00
00: version
00 00 00 01: ES
esds Box
00 00 00 23: size
of esds,35
65 73 64 73: esds
00 00 00 00: version
03 15 00
00:
00 04 0D 01:
05 00 00 C8:
00 00 00 00:
00 00 00 00:
06
01 02:
stts Box
00 00 00 18: size of stts,24
73 74 74
73: stts
00 00 00 00: version
00 00 00 01: entry-count
00 00
00 01: sample-count
00 04 B7 17: sample-delta
stsc Box
00
00 00 1C: size of stsc ,28
73 74 73 63: stsc
00 00 00
00: version
00 00 00 01: entry-count
00 00 00 01: first-chunk
00
00 00 01: samples-per-chunk
00 00 00 01: sample-description-index
stsz
Box
00 00 00 14: size of stsz,20
73 74 73 7A: stsz
00 00 00
00: version
00 00 00 12: sample-size
00 00 00 01: sample-count
stco
Box
00 00 00 14: size of stco,20
73 74 63 6F: stco
00 00 00
00: version
00 00 00 01: entry-count
00 03 B0 7D: chunk-offset
tref
Box
00 00 00 18: size of tref,24
74 72 65 66: tref
mpod
Box
00 00 00 10: size of mpod,16
6D 70 6F 64: mpod
00 00 00
C9:
00 00 00 65:
trak Box
00 00 01 91: size of trak,401
74
72 61 6B: trak
tkhd Box
00 00 00 5C: size of tkhd,92
74
6B 68 64: tkhd
00 00 00 01: 00,version; 00 00 01,track enable
flags
BE EE 87 C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 00 00 02: track-ID
00 00
00 00: 保留的32bits的0
01 A8 5E 16: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
00 00
00 00：width，if track_is_visual 0x01400000 else 0
00 00 00
00：height，if track_is_visual 0x00F00000 else 0
mdia Box
00 00
01 2D:size of mdia,301
6D 64 69 61:mdia
mdhd Box
00 00 00
20: 32
6D 64 68 64:mdhd
00 00 00 00 :version,flags
BE EE 87
C5: creation-time创建文件的时间
BE EE 87C5: modifiation-time修改文件的时间，两个时间应该相同
00
00 03 E8: timescale时标
00 04 B7 17: duration持续的时间
55 C4:pad,
3个5bits的language
00 00: pre-defined 0
hdlr Box
00 00 00
21:size of hdlr ,33
68 64 6C 72: hdlr
00 00 00 00: version
00
00 00 00: pre-defined 0
73 64 73 6D: sdsm,handler-type,
SceneDescriptionStream
00 00 00 00 00 00 00 00 00 00 00 00
: 3个reserved
00 ：string name
minf Box
00 00 00
E4: size of minf,228
6D 69 6E 66: minf
nmhd Box
00 00 00
0C: size of nmhd,12
6E 6D 68 64: nmhd
00 00 00 00: version
dinf
Box
00 00 00 24: size of dinf,36
64 69 6E 66: dinf
dref
Box
00 00 00 1C: size of dref,28
64 72 65 66: dref
00 00 00
00: version
00 00 00 01: entry-count
url Box
00 00 00 0C:
size of url ,12
75 72 6C 20: url
00 00 00 01: location
stbl
Box
00 00 00 AC: size of stbl,172
73 74 62 6C: stbl
stsd
Box
00 00 00 48: size of stsd,72
73 74 73 64: stsd
00 00 00
00: version,flags
00 00 00 01: entry-count
mp4s Box
00 00
00 38: size of mp4s, 56
6D 70 34 73: mp4s
00 00 00 00: version
00
00 00 01: ES
esds Box
00 00 00 28: size of esds,40
65 73
64 73: esds
00 00 00 00: version
03 1A 00 00:
00 04 12 02:
0D
00 00 20:
00 00 00 00:
00 00 00 00:
05 03 00 00:
40 06 01
02:
stts Box
00 00 00 18: size of stts,24
73 74 74
73: stts
00 00 00 00: version
00 00 00 01: entry-count
00 00
00 01: sample-count
00 04 B7 17: sample-delta
stsc Box
00
00 00 1C: size of stsc ,28
73 74 73 63: stsc
00 00 00
00: version
00 00 00 01: entry-count
00 00 00 01: first-chunk
00
00 00 01: samples-per-chunk
00 00 00 01: sample-description-index
stsz
Box
00 00 00 14: size of stsz,20
73 74 73 7A: stsz
00 00 00
00: version
00 00 00 18: sample-size
00 00 00 01: sample-count
stco
Box
00 00 00 14: size of stco,20
73 74 63 6F: stco
00 00 00
00: version
00 00 00 01: entry-count
00 03 B0 8F: chunk-offset
trak
Box
00 01 71 55:size of trak,
74 72 61 6B:trak
tkhd Box
00
00 00 5C: size of tkhd,92
74 6B 68 64: tkhd, track head box
00
00 00 01: 00,version; 00 00 01,track enable flags
BE EE 87
C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 00 00 C9: track-ID
00 00
00 00: 保留的32bits的0
01 A8 61 B8: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
02 D0
00 00：width，if track_is_visual 0x01400000 else 0
01 E0 00
00：height，if track_is_visual 0x00F00000 else 0
mdia Box
00 01
70 CD: size of mdia
6D 64 69 61: mdia
mdhd Box
00 00
00 20: size of mdhd ,32
6D 64 68 64: mdhd
00 00 00 00: version
BE
EE 87 C5: creation-time
BE EE 87 C5: modification-time
00 01 5F
90: timescale
01 A8 61 B8: duration
0 :pad
10101 01110
00100: 3个5bits的language
00 00 ：pre-defined 0
hdlr Box
00
00 00 21：size of hdlr,33
68 64 6C 72: hdlr
00 00 00 00: version
00
00 00 00: pre-defined 0
76 69 64 65: vide,handler-type，表示此trak为视频
00
00 00 00 00 00 00 00 00 00 00 00 : 3个reserved
00 ：string name
minf Box
00
01 70 84: size of minf,94340
6D 69 6E 66: minf
vmhd Box
00
00 00 14: size of nmhd
76 6D 68 64: nmhd
00 00 00
01: version,flags
00 00 00 00:
00 00 00 00:
dinf
Box
00 00 00 24: size of dinf,36
64 69 6E 66: dinf
dref
Box
00 00 00 1C: size of dref,28
64 72 65 66: dref
00 00 00
00: version
00 00 00 01: entry-count
url Box
00 00 00 0C:
size of url ,12
75 72 6C 20: url
00 00 00 01: location
stbl
Box
00 01 70 44: size of stbl
73 74 62 6C: stbl
stsd Box
00
00 00 AC: size of stsd,72
73 74 73 64: stsd
00 00 00
00: version,flags
00 00 00 01: entry-count
mp4v Box
00 00
00 9C: size of mp4v
6D 70 34 76: mp4v
00 00 00 00: version
00
00 00 01: ES
00 00 00 00 00 00 :
00 00 00 00 00 00 00 00 00 00
02 D0 01 E0 00 48
00 00 00 48 00 00 00 00 00 00 00 01 00 00 00 00
00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 18 FF FF
esds Box
00 00 00 46: size of esds
65
73 64 73: esds
00 00 00 00: version
03 38 00 00:
00 04 30
20:
11 03 D0 90:
00 1E 84 80:
00 1E 84 80:
05 21 00 00:
01
B0 00 00:
00 01 B5 0E:
A0 20 20 2F:
00 00 01 00:
00 00 01
20:
00 C7 88 BA:
98 51 68 43:
C1 46 3F 06:
01 02 :
stts
Box
00 00 E7 90: size of stts
73 74 74 73: stts
00 00 00
00: version
00 00 1C F0: entry-count
00 00 00 01: sample-count
00
00 0B BB: sample-delta
00 00 00 01
00 00 11 97
00 00 00 01
00
00 0B BB
00 00 00 01
00 00 11 9A
...........
stsc Box
00
00 0E 8C: size of stsc ,
73 74 73 63: stsc
00 00 00
00: version
00 00 01 35: entry-count
00 00 00
01: first-chunk
00 00 00 15: samples-per-chunk
00 00 00
01: sample-description-index
00 00 00 02
00 00 00 18
00 00
00 01
00 00 00 03
00 00 00 18
00 00 00 01
00 00 00
04
00 00 00 18
00 00 00 01
.............
stsz Box
00
00 73 D8 size of stsz,20
73 74 73 7A: stsz
00 00 00 00: version
00
00 00 00: sample-size
00 00 1C F1: sample-count
00 00 86
24（从此开始，为当前chunk中每帧视频数据的字节大小，此大小与offset相对应，用offset找到偏移的绝对地址（指向mdat
box中）后，从000001B6的第一个字节开始，加上对应的视频字节数，就是本帧的大小。一个视频chunk中首先是连续的视频帧，然后也包含其他数
据，暂不清楚视频数据后面的数据类型）
00 00 08 F9
00 00 3B 04
00 00 1D F2
00 00
49 00
00 00 60 A6
00 00 2E 30
00 00 33 F9
00 00 22 19
00
00 15 DB
00 00 17 47
00 00 1D 16
00 00 3A 4A
00 00 1C 1B
00
00 2C EA
00 00 37 28
00 00 3D 70
00 00 36 0B
00 00 16 D0
00
00 39 0F
00 00 22 79
第一个chunk中所有的视频帧大小结束
下面为当前chunk中视频数据后面暂不清楚
为什么数据类型的开始
00 00 15 DB
00 00 17 47
................
stco
Box
00 00 04 E4: size of stco,20
73 74 63 6F: stco
00 00 00
00: version
00 00 01 35: entry-count
00 03 B0
A7: chunk-offset（帧数据偏移的绝对地址（指向mdat box中），此处为视频数据，一个chunk约包含1S的数据，但不固定）
00
07 F1 5D
00 0B 58 D7
00 0E 58 9D
00 11 A5 3E
00 15 11 0B
00
18 15 4E
stss Box
00 00 00 B8:size
73 74 73
73:stss
00 00 00 00:version,flags
00 00 00 2A:entry_count
00 00
00 01
00 00 00 12
00 00 00 38
00 00 01 63
00 00 02 8E
00
00 03 B9
00 00 04 E4
00 00 05 83
00 00 06 AE
00 00 07 26
00
00 07 47
00 00 07 68
00 00 08 67
00 00 08 73
...............
udta
Box
00 00 00 24:
75 64 74 61:
uuid Box
00 00 00
1C: size of uuid
75 75 69 64: uuid
F7 8C AA 0C 36 BE 4C E9 87 D2
03 C2 56 DA BE B2 : 由于boxtype = uuid而定义的16个字节的usertype
与前面不同
00
01 19 9A
trak Box
00 01 72 D5
74 72 61 6B
tkhd Box
00
00 00 5C: size of tkhd,92
74 6B 68 64: tkhd, track head box
00
00 00 00: 00,version; 00 00 00,track enable flags
BE EE 87
C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 01 00 C9: track-ID
00 00
00 00: 保留的32bits的0
01 A8 61 B8: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
00 00
00 00：width，if track_is_visual 0x01400000 else 0
00 00 00
00：height，if track_is_visual 0x00F00000 else 0
mdia Box
00 01
70 5D: size of mdia
6D 64 69 61: mdia
mdhd Box
00 00
00 20: size of mdhd ,32
6D 64 68 64: mdhd
00 00 00 00: version
BE
EE 87 C5: creation-time
BE EE 87 C5: modification-time
00 01 5F
90: timescale
01 A8 61 B8: duration
0 :pad
10101 01110
00100: 3个5bits的language
00 00 ：pre-defined 0
hdlr Box
00
00 00 21：size of hdlr,33
68 64 6C 72: hdlr
00 00 00 00: version
00
00 00 00: pre-defined 0
68 69 6E 74: hint,handler-type
00 00 00
00 00 00 00 00 00 00 00 00 : 3个reserved
00 ：string name
minf Box
00
01 70 14: size of minf
6D 69 6E 66: minf
hmhd Box
00 00
00 1C
68 6D 68 64
00 00 00 00
05 A8 05 3B
00 1E 84 80
00
18 70 4E
00 1E 84 80
dinf Box
00 00 00 24: size of
dinf,36
64 69 6E 66: dinf
dref Box
00 00 00 1C: size of
dref,28
64 72 65 66: dref
00 00 00 00: version
00 00 00
01: entry-count
url Box
00 00 00 0C: size of url ,12
75 72
6C 20: url
00 00 00 01: location
stbl Box
00 01 6F
CC: size of stbl,
73 74 62 6C: stbl
stsd Box
00 00 00
34: size of stsd,
73 74 73 64: stsd
00 00 00 00: version,flags
00
00 00 01: entry-count
rtp
00 00 00 24
72 74 70 20:rtp
00
00 00 00
00 00 00 01
00 01 00 01
00 00 05 A8
tims
00
00 00 0C
74 69 6D 73
00 01 5F 90
stts
00 00 E7 90
73
74 74 73
00 00 00 00: version
00 00 1C F0: entry-count
00 00
00 01: sample-count
00 00 0B BB: sample-delta
00 00 00 01
00
00 11 97
00 00 00 01
00 00 0B BB
00 00 00 01
00 00 11 9A
..................
stsc
00
00 0E 8C
73 74 73 63
00 00 00 00: version
00 00 01
35: entry-count
00 00 00 01: first-chunk
00 00 00
18: samples-per-chunk
00 00 00 01: sample-description-index
00
00 00 02
00 00 00 18
00 00 00 01
00 00 00 03
00 00 00
18
00 00 00 01
..............
stsz Box
00
00 73 D8: size of stsz,20
73 74 73 7A: stsz
00 00 00
00: version
00 00 00 00: sample-size
00 00 1C F1: sample-count
..................
stco
00
00 04 E4
73 74 63 6F
00 00 00 00: version
00 00 01
35: entry-count
00 07 B1 24:chunk_offset
00 0B 20 81
..............
stss
00
00 00 B8
73 74 73 73
.............
tref
00 00 00 14
74
72 65 66
hint
00 00 00 0C
68 69 6E 74
00 00 00 C9
udta
00
00 02 00
75 64 74 61
hinf
00 00 00 E2
68 69 6E 66
trpy
00
00 00 10
74 72 70 79
00 00 00 00
03 B8 8E 51
nump
00
00 00 10
6E 75 6D 70
00 00 00 00
00 00 B6 0A
tpyl
00
00 00 10
74 70 79 6C
00 00 00 00
03 B0 05 D9
totl
00
00 00 0C
74 6F 74 6C
03 B8 8E 51
npck
00 00 00 0C
6E
70 63 6B
00 00 B6 0A
tpay
00 00 00 0C
74 70 61 79
03
B0 05 D9
dmed
00 00 00 10
64 6D 65 64
00 00 00 00
03
B0 05 B8
dimm
00 00 00 10
64 69 6D 6D
00 00 00 00
00
00 00 21
drep
00 00 00 10
64 72 65 70
00 00 00 00
00
00 00 00
tmin
00 00 00 0C
74 6D 69 6E
FF FF FC 18
tmax
00
00 00 0C
74 6D 61 78
00 00 00 00
pmax
00 00 00 0C
70
6D 61 78
00 00 05 A8
dmax
00 00 00 0C
64 6D 61 78
00
00 00 32
payt
00 00 00 26
70 61 79 74
00 00 00 60 19
a=rtpmap:96
MP4V-ES/90000
hnti
sdp m=video 0 RTP/AVP 96
b=AS:2048
a=rtpmap:96
MP4V-ES/90000
a=fmtp:96 profile-level-id=254;config=
a=cliprect:0,0,480,720
a=mpeg4-esid:201
a=x-envivio-verid:0001199A
a=control:trackID=65737
trak
00
00 AB 60
74 72 61 6B
tkhd Box
00 00 00 5C: size of
tkhd,92
74 6B 68 64: tkhd
00 00 00 01: 00,version; 00 00
01,track enable flags
BE EE 87 C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 00 00 65: track-ID
00 00
00 00: 保留的32bits的0
01 A8 07 40: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
00 00
00 00：width，if track_is_visual 0x01400000 else 0
00 00 00
00：height，if track_is_visual 0x00F00000 else 0
mdia Box
00 00
AA D8:size of mdia,301
6D 64 69 61:mdia
mdhd Box
00 00 00
20: 32
6D 64 68 64:mdhd
00 00 00 00 :version,flags
BE EE 87
C5: creation-time创建文件的时间
BE EE 87C5: modifiation-time修改文件的时间，两个时间应该相同
00
00 7D 00: timescale时标
00 96 C4 00: duration持续的时间
55 C4:pad,
3个5bits的language
00 00: pre-defined 0
hdlr Box
00 00 00
21:size of hdlr ,33
68 64 6C 72: hdlr
00 00 00 00: version
00
00 00 00: pre-defined 0
73 6F 75 6E: soun,handler-type,表示此trak为音频
00
00 00 00 00 00 00 00 00 00 00 00 : 3个reserved
00 ：string name
minf
Box
00 00 AA 8F:size of minf
6D 69 6E 66:minf
smhd Box
00
00 00 10:size of smhd
73 6D 68 64:smhd
00 00 00 00:version
00
00 :balance,
balance is a fixed-point 8.8 number that places mono
audio tracks in a stereo space; 0 is center (the normal value); full
left is -1.0 and full right is 1.0.
00 00:reserved
dinf Box
00
00 00 24:size of dinf
64 69 6E 66:dinf
dref Box
00 00 00
1C: size of dref,28
64 72 65 66: dref
00 00 00 00: version
00
00 00 01: entry-count
url Box
00 00 00 0C: size of url
,12
75 72 6C 20: url
00 00 00 01: location
stbl Box
00
00 AA 53: size of stbl
73 74 62 6C: stbl
stsd Box
00 00
00 5B: size of stsd
73 74 73 64: stsd
00 00 00
00: version,flags
00 00 00 01: entry-count
mp4a Box
00
00 00 4B:
6D 70 34 61:mp4a
00 00 00 00:version
00 00 00 01:ES
00
00 00 00
00 00 00 00
00 02 00 10
00 00 00 00
7D 00 00 00
esds
box
00 00 00 27
65 73 64 73
00 00 00 00: version
03 19 00
00:
00 04 11 40:
15 00 06 00:
00 00 FA 00:
00 00 FA 00:
05
02 12 90:
06 01 02 :
stts
00 00 00 18
73 74 74 73:stts
00
00 00 00: version
00 00 00 01: entry-count
00 00 25
B1: sample-count
00 00 04 00: sample-delta
stsc Box
00 00
0E 38: size of stsc
73 74 73 63: stsc
00 00 00 00: version
00
00 01 2E: entry-count
00 00 00 01: first-chunk
00 00 00
20: samples-per-chunk
00 00 00 01: sample-description-index
00
00 00 02
00 00 00 20
00 00 00 01
00 00 00 03
00 00 00 20
00
00 00 01
00 00 00 04
00 00 00 20
00 00 00 01
..........................
stsz
box
00 00 96 D8: size of stsz,
73 74 73 7A: stsz
00 00 00
00: version
00 00 00 00: sample-size
00 00 25 B1: sample-count
.................................
stco
00
00 04 C8
73 74 63 6F:stco
00 00 00 00: version
00 00 01
2E: entry-count
00 07 C9 54: chunk-offset
00 0B 32 0D
00 0E
32 9B
............................
udta box
00 00 00 24
75
64 74 61
uuid
00 00 00 1C
75 75 69 64
F7 8C AA 0C 36
BE 4C E9 87 D2 03 C2 56 DA BE
B2 : 由于boxtype =
uuid而定义的16个字节的usertype
00 01 19 9A
trak
00 00 16 76
74
72 61 6B: trak
tkhd Box
00 00 00 5C: size of tkhd,92
74
6B 68 64: tkhd, track head box
00 00 00 00: 00,version; 00 00
00,track enable flags
BE EE 87 C5: creation-time创建文件的时间
BE EE 87
C5: modifiation-time修改文件的时间，两个时间应该相同
00 01 00 65: track-ID
00 00
00 00: 保留的32bits的0
01 A8 07 40: duration持续的时间
00 00 00 00 00
00 00 00: 保留的2个32bits的0
00 00：layer 0
00 00：pre-defined 0
00
00：volume，as non audio，if audio ，0x0100
00 00：reserved 0
00 01 00
00 00 00 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00
00 00
00 00 00 00 00 00 00 00 40 00 00 00 ：matrix
00 00
00 00：width，if track_is_visual 0x01400000 else 0
00 00 00
00：height，if track_is_visual 0x00F00000 else 0
mdia box
00 00
13 F9
6D 64 69 61
mdhd box
00 00 00 20
6D 64 68 64:mdhd
00
00 00 00
BE EE 87 C5
BE EE 87 C5
00 00 7D 00:timescale
00
96 C4 00:duration
55 C4=
0 :pad
10101 01110
00100: 3个5bits的language
00 00 ：pre-defined 0
hdlr box
00
00 00 21：size of hdlr,33
68 64 6C 72: hdlr
00 00 00 00: version
00
00 00 00: pre-defined 0
68 69 6E 74: hint,handler-type
00 00 00
00 00 00 00 00 00 00 00 00 : 3个reserved
00 ：string name
minf Box
00
00 13 B0: size of minf
6D 69 6E 66: minf
hmhd box
00 00
00 1C
68 6D 68 64
00 00 00 00
05 A8 :maxPDU
01 0C :avgPDU
00
00 FA 00: maxbitrate
00 00 FA 00: avgbitrate
00 00 FA
00:此处应该为保留的0，有误？
dinf Box
00 00 00 24: size of dinf,36
64
69 6E 66: dinf
dref Box
00 00 00 1C: size of dref,28
64
72 65 66: dref
00 00 00 00: version
00 00 00 01: entry-count
url
Box
00 00 00 0C: size of url ,12
75 72 6C 20: url
00 00 00
01: location
stbl box
00 00 13 68
73 74 62 6C: stbl
stsd
Box
00 00 00 34: size of stsd,67
73 74 73 64: stsd
00 00 00
00: version,flags
00 00 00 01: entry-count
rtp box
00 00
00 24
72 74 70 20:rtp
00 00 00 00
00 00
00 01:
hinttrackversion
00 01: highestcompatibleversion
00 01 00 00 :
maxpacketsize
05 A8: additionaldata[]
tims box
00
00 00 0C
74 69 6D 73
00 00 7D 00: timescale
stts
box
00 00 00 18
73 74 74 73
00 00 00 00: version
00 00 00
01: entry-count
00 00 25 B1: sample-count
00 00 04
00: sample-delta
stsc Box
00 00 0E 38: size of stsc
73
74 73 63: stsc
00 00 00 00: version
00 00 01 2E: entry-count
00
00 00 01: first-chunk
00 00 00 20: samples-per-chunk
00 00 00
01: sample-description-index
00 00 00 02: first-chunk
00 00
00 20: samples-per-chunk
00 00 00 01: sample-description-index
00
00 00 03: first-chunk
00 00 00 20: samples-per-chunk
00 00 00
01: sample-description-index
00 00 00 04: first-chunk
00 00
00 20: samples-per-chunk
00 00 00 01: sample-description-index
.............................
stsz
Box
00 00 00 14: size of stsz,20
73 74 73 7A: stsz
00 00 00
00: version
00 00 00 30: sample-size
00 00 25 B1: sample-count
stco
Box
00 00 04 C8: size of stco
73 74 63 6F: stco
00 00 00
00: version
00 00 01 2E: entry-count
00 07 EB 5D: chunk-offset
00
0B 52 D7
...........................
tref Box
00 00 00
14: size of tref,
74 72 65 66: tref
hint box
00 00 00 0C
68
69 6E 74
00 00 00 65:track-IDS
udta box
00 00 02 05
75
64 74 61
hinf box
00 00 00 EA
68 69 6E 66
trpy Box
00
00 00 10:size of trpy,16
74 72 70 79:trpy
00 00 00 00 00 28 0E
DE: uint(64) bytessent; // total bytes sent, including 12-byte RTP
headers
nump Box
00 00 00 10:size of nump,16
6E 75 6D
70:nump
00 00 00 00 00 00 25 B1: uint(64) packetssent
tpyl
Box
00 00 00 10:size of tpyl,16
74 70 79 6C:tpyl
00 00 00 00 00
26 4A 92: uint(64) bytessent; // total bytes sent, not including RTP
headers
totl Box
00 00 00 0C:size of totl,12
74 6F 74
6C:totl
00 28 0E DE: bytessent; } // total bytes sent, including
12-byte RTP headers
npck Box
00 00 00 0C:size of npck,12
6E
70 63 6B:npck
00 00 25 B1: packetssent; } // total packets sent
tpay
Box
00 00 00 0C:size of tpay,12
74 70 61 79:tpay
00 26 4A 92:
bytessent; } // total bytes sent, not including RTP headers
dmed
Box
00 00 00 10:16
64 6D 65 64:dmed
00 00 00 00 00 25 B3 CE:
bytessent; } // total bytes sent from media tracks
dimm Box
00
00 00 10:16
64 69 6D 6D:dimm
00 00 00 00 00 00 96 C4: bytessent;
} // total bytes sent immediate mode
drep Box
00 00
00 10:16
64 72 65 70:drep
00 00 00 00 00 00 00 00: bytessent;
} // total bytes in repeated packets
tmin Box
00 00 00
0C:12
74 6D 69 6E: tmin
FF FF FF 40: time; // smallest
relative transmission time, milliseconds
tmax Box
00 00 00
0C:12
74 6D 61 78:tmax
00 00 00 00: time; } // largest
relative transmission time, milliseconds
pmax Box
00 00 00
0C:12
70 6D 61 78:pamx
00 00 01 45: bytes; } // largest
packet sent, including RTP header
dmax Box
00 00 00 0C:12
64
6D 61 78:dmax
00 00 00 20: time; } // longest packet duration,
milliseconds
payt Box
00 00 00 2E:
70 61 79 74:payt
00
00 00 61: payloadID
21 : count,
a=rtpmap:97 mpeg4-generic/32000/2
hnti
Box
00 00 01 13:
68 6E 74 69:hnti
sdp Box
00 00 01 0B:
73
64 70 20:sdp
sdptext[]:
m=audio 0 RTP/AVP 97
b=AS:75
a=rtpmap:97
mpeg4-generic/32000/2
a=fmtp:97 profile-level-id =15
config=1290
streamtype=5
mode=AAC-hbr
SizeLength=13
IndexLength=3
IndexDeltaLength=3
a=mpeg4-esid:101
a=x-envivio=verid:0001199A
a=control:trackID=65637
mdat
box
03 F1 27 F4
6D 64 61 74:mdat
....................................
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