1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
#------------------------------------------------------------------------------
# $File: riff,v 1.27 2014/04/30 21:41:02 christos Exp $
# riff: file(1) magic for RIFF format
# See
#
# http://www.seanet.com/users/matts/riffmci/riffmci.htm
#
# audio format tag. Assume limits: max 1024 bit, 128 channels, 1 MHz
0 name riff-wave
>0 leshort 1 \b, Microsoft PCM
>>14 leshort >0
>>>14 leshort <1024 \b, %d bit
>0 leshort 2 \b, Microsoft ADPCM
>0 leshort 6 \b, ITU G.711 A-law
>0 leshort 7 \b, ITU G.711 mu-law
>0 leshort 8 \b, Microsoft DTS
>0 leshort 17 \b, IMA ADPCM
>0 leshort 20 \b, ITU G.723 ADPCM (Yamaha)
>0 leshort 49 \b, GSM 6.10
>0 leshort 64 \b, ITU G.721 ADPCM
>0 leshort 80 \b, MPEG
>0 leshort 85 \b, MPEG Layer 3
>0 leshort 0x2001 \b, DTS
>2 leshort =1 \b, mono
>2 leshort =2 \b, stereo
>2 leshort >2
>>2 leshort <128 \b, %d channels
>4 lelong >0
>>4 lelong <1000000 %d Hz
# try to find "fmt "
0 name riff-walk
>0 string fmt\x20
>>4 lelong <0x80
>>>8 use riff-wave
>0 string LIST
>>&(4.l+4) use riff-walk
>0 string DISP
>>&(4.l+4) use riff-walk
>0 string bext
>>&(4.l+4) use riff-walk
>0 string Fake
>>&(4.l+4) use riff-walk
>0 string fact
>>&(4.l+4) use riff-walk
# AVI section extended by Patrik Radman <patrik+file-magic@iki.fi>
#
0 string RIFF RIFF (little-endian) data
# RIFF Palette format
>8 string PAL \b, palette
>>16 leshort x \b, version %d
>>18 leshort x \b, %d entries
# RIFF Device Independent Bitmap format
>8 string RDIB \b, device-independent bitmap
>>16 string BM
>>>30 leshort 12 \b, OS/2 1.x format
>>>>34 leshort x \b, %d x
>>>>36 leshort x %d
>>>30 leshort 64 \b, OS/2 2.x format
>>>>34 leshort x \b, %d x
>>>>36 leshort x %d
>>>30 leshort 40 \b, Windows 3.x format
>>>>34 lelong x \b, %d x
>>>>38 lelong x %d x
>>>>44 leshort x %d
# RIFF MIDI format
>8 string RMID \b, MIDI
# RIFF Multimedia Movie File format
>8 string RMMP \b, multimedia movie
# RIFF wrapper for MP3
>8 string RMP3 \b, MPEG Layer 3 audio
# Microsoft WAVE format (*.wav)
>8 string WAVE \b, WAVE audio
!:mime audio/x-wav
>>12 string >\0
>>>12 use riff-walk
# Corel Draw Picture
>8 string CDRA \b, Corel Draw Picture
!:mime image/x-coreldraw
>8 string CDR6 \b, Corel Draw Picture, version 6
!:mime image/x-coreldraw
>8 string NUNDROOT \b, Steinberg CuBase
# AVI == Audio Video Interleave
>8 string AVI\040 \b, AVI
!:mime video/x-msvideo
>>12 string LIST
>>>20 string hdrlavih
>>>>&36 lelong x \b, %u x
>>>>&40 lelong x %u,
>>>>&4 lelong >1000000 <1 fps,
>>>>&4 lelong 1000000 1.00 fps,
>>>>&4 lelong 500000 2.00 fps,
>>>>&4 lelong 333333 3.00 fps,
>>>>&4 lelong 250000 4.00 fps,
>>>>&4 lelong 200000 5.00 fps,
>>>>&4 lelong 166667 6.00 fps,
>>>>&4 lelong 142857 7.00 fps,
>>>>&4 lelong 125000 8.00 fps,
>>>>&4 lelong 111111 9.00 fps,
>>>>&4 lelong 100000 10.00 fps,
# ]9.9,10.1[
>>>>&4 lelong <101010
>>>>>&-4 lelong >99010
>>>>>>&-4 lelong !100000 ~10 fps,
>>>>&4 lelong 83333 12.00 fps,
# ]11.9,12.1[
>>>>&4 lelong <84034
>>>>>&-4 lelong >82645
>>>>>>&-4 lelong !83333 ~12 fps,
>>>>&4 lelong 66667 15.00 fps,
# ]14.9,15.1[
>>>>&4 lelong <67114
>>>>>&-4 lelong >66225
>>>>>>&-4 lelong !66667 ~15 fps,
>>>>&4 lelong 50000 20.00 fps,
>>>>&4 lelong 41708 23.98 fps,
>>>>&4 lelong 41667 24.00 fps,
# ]23.9,24.1[
>>>>&4 lelong <41841
>>>>>&-4 lelong >41494
>>>>>>&-4 lelong !41708
>>>>>>>&-4 lelong !41667 ~24 fps,
>>>>&4 lelong 40000 25.00 fps,
# ]24.9,25.1[
>>>>&4 lelong <40161
>>>>>&-4 lelong >39841
>>>>>>&-4 lelong !40000 ~25 fps,
>>>>&4 lelong 33367 29.97 fps,
>>>>&4 lelong 33333 30.00 fps,
# ]29.9,30.1[
>>>>&4 lelong <33445
>>>>>&-4 lelong >33223
>>>>>>&-4 lelong !33367
>>>>>>>&-4 lelong !33333 ~30 fps,
>>>>&4 lelong <32224 >30 fps,
##>>>>&4 lelong x (%lu)
##>>>>&20 lelong x %lu frames,
# Note: The tests below assume that the AVI has 1 or 2 streams,
# "vids" optionally followed by "auds".
# (Should cover 99.9% of all AVIs.)
# assuming avih length = 56
>>>88 string LIST
>>>>96 string strlstrh
>>>>>108 string vids video:
>>>>>>&0 lelong 0 uncompressed
# skip past vids strh
>>>>>>(104.l+108) string strf
>>>>>>>(104.l+132) lelong 1 RLE 8bpp
>>>>>>>(104.l+132) string/c cvid Cinepak
>>>>>>>(104.l+132) string/c i263 Intel I.263
>>>>>>>(104.l+132) string/c iv32 Indeo 3.2
>>>>>>>(104.l+132) string/c iv41 Indeo 4.1
>>>>>>>(104.l+132) string/c iv50 Indeo 5.0
>>>>>>>(104.l+132) string/c mp42 Microsoft MPEG-4 v2
>>>>>>>(104.l+132) string/c mp43 Microsoft MPEG-4 v3
>>>>>>>(104.l+132) string/c fmp4 FFMpeg MPEG-4
>>>>>>>(104.l+132) string/c mjpg Motion JPEG
>>>>>>>(104.l+132) string/c div3 DivX 3
>>>>>>>>112 string/c div3 Low-Motion
>>>>>>>>112 string/c div4 Fast-Motion
>>>>>>>(104.l+132) string/c divx DivX 4
>>>>>>>(104.l+132) string/c dx50 DivX 5
>>>>>>>(104.l+132) string/c xvid XviD
>>>>>>>(104.l+132) string/c h264 H.264
>>>>>>>(104.l+132) string/c wmv3 Windows Media Video 9
>>>>>>>(104.l+132) string/c h264 X.264 or H.264
>>>>>>>(104.l+132) lelong 0
##>>>>>>>(104.l+132) string x (%.4s)
# skip past first (video) LIST
>>>>(92.l+96) string LIST
>>>>>(92.l+104) string strlstrh
>>>>>>(92.l+116) string auds \b, audio:
# auds strh length = 56:
>>>>>>>(92.l+172) string strf
>>>>>>>>(92.l+180) leshort 0x0001 uncompressed PCM
>>>>>>>>(92.l+180) leshort 0x0002 ADPCM
>>>>>>>>(92.l+180) leshort 0x0006 aLaw
>>>>>>>>(92.l+180) leshort 0x0007 uLaw
>>>>>>>>(92.l+180) leshort 0x0050 MPEG-1 Layer 1 or 2
>>>>>>>>(92.l+180) leshort 0x0055 MPEG-1 Layer 3
>>>>>>>>(92.l+180) leshort 0x2000 Dolby AC3
>>>>>>>>(92.l+180) leshort 0x0161 DivX
##>>>>>>>>(92.l+180) leshort x (0x%.4x)
>>>>>>>>(92.l+182) leshort 1 (mono,
>>>>>>>>(92.l+182) leshort 2 (stereo,
>>>>>>>>(92.l+182) leshort >2 (%d channels,
>>>>>>>>(92.l+184) lelong x %d Hz)
# auds strh length = 64:
>>>>>>>(92.l+180) string strf
>>>>>>>>(92.l+188) leshort 0x0001 uncompressed PCM
>>>>>>>>(92.l+188) leshort 0x0002 ADPCM
>>>>>>>>(92.l+188) leshort 0x0055 MPEG-1 Layer 3
>>>>>>>>(92.l+188) leshort 0x2000 Dolby AC3
>>>>>>>>(92.l+188) leshort 0x0161 DivX
##>>>>>>>>(92.l+188) leshort x (0x%.4x)
>>>>>>>>(92.l+190) leshort 1 (mono,
>>>>>>>>(92.l+190) leshort 2 (stereo,
>>>>>>>>(92.l+190) leshort >2 (%d channels,
>>>>>>>>(92.l+192) lelong x %d Hz)
# Animated Cursor format
>8 string ACON \b, animated cursor
# SoundFont 2 <mpruett@sgi.com>
>8 string sfbk SoundFont/Bank
# MPEG-1 wrapped in a RIFF, apparently
>8 string CDXA \b, wrapped MPEG-1 (CDXA)
>8 string 4XMV \b, 4X Movie file
# AMV-type AVI file: http://wiki.multimedia.cx/index.php?title=AMV
>8 string AMV\040 \b, AMV
#
# XXX - some of the below may only appear in little-endian form.
#
# Also "MV93" appears to be for one form of Macromedia Director
# files, and "GDMF" appears to be another multimedia format.
#
0 string RIFX RIFF (big-endian) data
# RIFF Palette format
>8 string PAL \b, palette
>>16 beshort x \b, version %d
>>18 beshort x \b, %d entries
# RIFF Device Independent Bitmap format
>8 string RDIB \b, device-independent bitmap
>>16 string BM
>>>30 beshort 12 \b, OS/2 1.x format
>>>>34 beshort x \b, %d x
>>>>36 beshort x %d
>>>30 beshort 64 \b, OS/2 2.x format
>>>>34 beshort x \b, %d x
>>>>36 beshort x %d
>>>30 beshort 40 \b, Windows 3.x format
>>>>34 belong x \b, %d x
>>>>38 belong x %d x
>>>>44 beshort x %d
# RIFF MIDI format
>8 string RMID \b, MIDI
# RIFF Multimedia Movie File format
>8 string RMMP \b, multimedia movie
# Microsoft WAVE format (*.wav)
>8 string WAVE \b, WAVE audio
>>20 leshort 1 \b, Microsoft PCM
>>>34 leshort >0 \b, %d bit
>>22 beshort =1 \b, mono
>>22 beshort =2 \b, stereo
>>22 beshort >2 \b, %d channels
>>24 belong >0 %d Hz
# Corel Draw Picture
>8 string CDRA \b, Corel Draw Picture
>8 string CDR6 \b, Corel Draw Picture, version 6
# AVI == Audio Video Interleave
>8 string AVI\040 \b, AVI
# Animated Cursor format
>8 string ACON \b, animated cursor
# Notation Interchange File Format (big-endian only)
>8 string NIFF \b, Notation Interchange File Format
# SoundFont 2 <mpruett@sgi.com>
>8 string sfbk SoundFont/Bank
#------------------------------------------------------------------------------
# Sony Wave64
# see http://www.vcs.de/fileadmin/user_upload/MBS/PDF/Whitepaper/Informations_about_Sony_Wave64.pdf
# 128 bit RIFF-GUID { 66666972-912E-11CF-A5D6-28DB04C10000 } in little-endian
0 string riff\x2E\x91\xCF\x11\xA5\xD6\x28\xDB\x04\xC1\x00\x00 Sony Wave64 RIFF data
# 128 bit + total file size (64 bits) so 24 bytes
# then WAVE-GUID { 65766177-ACF3-11D3-8CD1-00C04F8EDB8A }
>24 string wave\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A \b, WAVE 64 audio
!:mime audio/x-w64
# FMT-GUID { 20746D66-ACF3-11D3-8CD1-00C04F8EDB8A }
>>40 search/256 fmt\x20\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A \b
>>>&10 leshort =1 \b, mono
>>>&10 leshort =2 \b, stereo
>>>&10 leshort >2 \b, %d channels
>>>&12 lelong >0 %d Hz
#------------------------------------------------------------------------------
# MBWF/RF64
# see EBU TECH 3306 http://tech.ebu.ch/docs/tech/tech3306-2009.pdf
0 string RF64\xff\xff\xff\xffWAVEds64 MBWF/RF64 audio
!:mime audio/x-wav
>40 search/256 fmt\x20 \b
>>&6 leshort =1 \b, mono
>>&6 leshort =2 \b, stereo
>>&6 leshort >2 \b, %d channels
>>&8 lelong >0 %d Hz
|
