2 #------------------------------------------------------------------------------
3 # riff: file(1) magic for RIFF format
6 # http://www.seanet.com/users/matts/riffmci/riffmci.htm
8 # AVI section extended by Patrik Rådman <patrik+file-magic@iki.fi>
10 0 string RIFF RIFF (little-endian) data
12 >8 string PAL \b, palette
13 >>16 leshort x \b, version %d
14 >>18 leshort x \b, %d entries
15 # RIFF Device Independent Bitmap format
16 >8 string RDIB \b, device-independent bitmap
18 >>>30 leshort 12 \b, OS/2 1.x format
19 >>>>34 leshort x \b, %d x
21 >>>30 leshort 64 \b, OS/2 2.x format
22 >>>>34 leshort x \b, %d x
24 >>>30 leshort 40 \b, Windows 3.x format
25 >>>>34 lelong x \b, %d x
29 >8 string RMID \b, MIDI
30 # RIFF Multimedia Movie File format
31 >8 string RMMP \b, multimedia movie
32 # RIFF wrapper for MP3
33 >8 string RMP3 \b, MPEG Layer 3 audio
34 # Microsoft WAVE format (*.wav)
35 >8 string WAVE \b, WAVE audio
36 >>20 leshort 1 \b, Microsoft PCM
37 >>>34 leshort >0 \b, %d bit
38 >>20 leshort 2 \b, Microsoft ADPCM
39 >>20 leshort 6 \b, ITU G.711 A-law
40 >>20 leshort 7 \b, ITU G.711 mu-law
41 >>20 leshort 17 \b, IMA ADPCM
42 >>20 leshort 20 \b, ITU G.723 ADPCM (Yamaha)
43 >>20 leshort 49 \b, GSM 6.10
44 >>20 leshort 64 \b, ITU G.721 ADPCM
45 >>20 leshort 80 \b, MPEG
46 >>20 leshort 85 \b, MPEG Layer 3
47 >>22 leshort =1 \b, mono
48 >>22 leshort =2 \b, stereo
49 >>22 leshort >2 \b, %d channels
52 >8 string CDRA \b, Corel Draw Picture
53 # AVI == Audio Video Interleave
54 >8 string AVI\040 \b, AVI
57 >>>>&36 lelong x \b, %lu x
59 >>>>&4 lelong >1000000 <1 fps,
60 >>>>&4 lelong 1000000 1.00 fps,
61 >>>>&4 lelong 500000 2.00 fps,
62 >>>>&4 lelong 333333 3.00 fps,
63 >>>>&4 lelong 250000 4.00 fps,
64 >>>>&4 lelong 200000 5.00 fps,
65 >>>>&4 lelong 166667 6.00 fps,
66 >>>>&4 lelong 142857 7.00 fps,
67 >>>>&4 lelong 125000 8.00 fps,
68 >>>>&4 lelong 111111 9.00 fps,
69 >>>>&4 lelong 100000 10.00 fps,
72 >>>>>&-4 lelong >99010
73 >>>>>>&-4 lelong !100000 ~10 fps,
74 >>>>&4 lelong 83333 12.00 fps,
77 >>>>>&-4 lelong >82645
78 >>>>>>&-4 lelong !83333 ~12 fps,
79 >>>>&4 lelong 66667 15.00 fps,
82 >>>>>&-4 lelong >66225
83 >>>>>>&-4 lelong !66667 ~15 fps,
84 >>>>&4 lelong 50000 20.00 fps,
85 >>>>&4 lelong 41708 23.98 fps,
86 >>>>&4 lelong 41667 24.00 fps,
89 >>>>>&-4 lelong >41494
90 >>>>>>&-4 lelong !41708
91 >>>>>>>&-4 lelong !41667 ~24 fps,
92 >>>>&4 lelong 40000 25.00 fps,
95 >>>>>&-4 lelong >39841
96 >>>>>>&-4 lelong !40000 ~25 fps,
97 >>>>&4 lelong 33367 29.97 fps,
98 >>>>&4 lelong 33333 30.00 fps,
101 >>>>>&-4 lelong >33223
102 >>>>>>&-4 lelong !33367
103 >>>>>>>&-4 lelong !33333 ~30 fps,
104 >>>>&4 lelong <32224 >30 fps,
105 ##>>>>&4 lelong x (%lu)
106 ##>>>>&20 lelong x %lu frames,
107 # Note: The tests below assume that the AVI has 1 or 2 streams,
108 # "vids" optionally followed by "auds".
109 # (Should cover 99.9% of all AVIs.)
110 # assuming avih length = 56
112 >>>>96 string strlstrh
113 >>>>>108 string vids video:
114 >>>>>>&0 lelong 0 uncompressed
115 # skip past vids strh
116 >>>>>>(104.l+108) string strf
117 >>>>>>>(104.l+132) lelong 1 RLE 8bpp
118 >>>>>>>(104.l+132) string/c cvid Cinepak
119 >>>>>>>(104.l+132) string/c i263 Intel I.263
120 >>>>>>>(104.l+132) string/c iv32 Indeo 3.2
121 >>>>>>>(104.l+132) string/c iv41 Indeo 4.1
122 >>>>>>>(104.l+132) string/c iv50 Indeo 5.0
123 >>>>>>>(104.l+132) string/c mp42 Microsoft MPEG-4 v2
124 >>>>>>>(104.l+132) string/c mp43 Microsoft MPEG-4 v3
125 >>>>>>>(104.l+132) string/c fmp4 FFMpeg MPEG-4
126 >>>>>>>(104.l+132) string/c mjpg Motion JPEG
127 >>>>>>>(104.l+132) string/c div3 DivX 3
128 >>>>>>>>112 string/c div3 Low-Motion
129 >>>>>>>>112 string/c div4 Fast-Motion
130 >>>>>>>(104.l+132) string/c divx DivX 4
131 >>>>>>>(104.l+132) string/c dx50 DivX 5
132 >>>>>>>(104.l+132) string/c xvid XviD
133 >>>>>>>(104.l+132) string/c wmv3 Windows Media Video 9
134 >>>>>>>(104.l+132) string/c h264 X.264
135 >>>>>>>(104.l+132) lelong 0
136 ##>>>>>>>(104.l+132) string x (%.4s)
137 # skip past first (video) LIST
138 >>>>(92.l+96) string LIST
139 >>>>>(92.l+104) string strlstrh
140 >>>>>>(92.l+116) string auds \b, audio:
141 # auds strh length = 56:
142 >>>>>>>(92.l+172) string strf
143 >>>>>>>>(92.l+180) leshort 0x0001 uncompressed PCM
144 >>>>>>>>(92.l+180) leshort 0x0002 ADPCM
145 >>>>>>>>(92.l+180) leshort 0x0006 aLaw
146 >>>>>>>>(92.l+180) leshort 0x0007 uLaw
147 >>>>>>>>(92.l+180) leshort 0x0050 MPEG-1 Layer 1 or 2
148 >>>>>>>>(92.l+180) leshort 0x0055 MPEG-1 Layer 3
149 >>>>>>>>(92.l+180) leshort 0x2000 Dolby AC3
150 >>>>>>>>(92.l+180) leshort 0x0161 DivX
151 ##>>>>>>>>(92.l+180) leshort x (0x%.4x)
152 >>>>>>>>(92.l+182) leshort 1 (mono,
153 >>>>>>>>(92.l+182) leshort 2 (stereo,
154 >>>>>>>>(92.l+182) leshort >2 (%d channels,
155 >>>>>>>>(92.l+184) lelong x %d Hz)
156 # auds strh length = 64:
157 >>>>>>>(92.l+180) string strf
158 >>>>>>>>(92.l+188) leshort 0x0001 uncompressed PCM
159 >>>>>>>>(92.l+188) leshort 0x0002 ADPCM
160 >>>>>>>>(92.l+188) leshort 0x0055 MPEG-1 Layer 3
161 >>>>>>>>(92.l+188) leshort 0x2000 Dolby AC3
162 >>>>>>>>(92.l+188) leshort 0x0161 DivX
163 ##>>>>>>>>(92.l+188) leshort x (0x%.4x)
164 >>>>>>>>(92.l+190) leshort 1 (mono,
165 >>>>>>>>(92.l+190) leshort 2 (stereo,
166 >>>>>>>>(92.l+190) leshort >2 (%d channels,
167 >>>>>>>>(92.l+192) lelong x %d Hz)
168 # Animated Cursor format
169 >8 string ACON \b, animated cursor
170 # SoundFont 2 <mpruett@sgi.com>
171 >8 string sfbk SoundFont/Bank
172 # MPEG-1 wrapped in a RIFF, apparently
173 >8 string CDXA \b, wrapped MPEG-1 (CDXA)
174 >8 string 4XMV \b, 4X Movie file
177 # XXX - some of the below may only appear in little-endian form.
179 # Also "MV93" appears to be for one form of Macromedia Director
180 # files, and "GDMF" appears to be another multimedia format.
182 0 string RIFX RIFF (big-endian) data
183 # RIFF Palette format
184 >8 string PAL \b, palette
185 >>16 beshort x \b, version %d
186 >>18 beshort x \b, %d entries
187 # RIFF Device Independent Bitmap format
188 >8 string RDIB \b, device-independent bitmap
190 >>>30 beshort 12 \b, OS/2 1.x format
191 >>>>34 beshort x \b, %d x
193 >>>30 beshort 64 \b, OS/2 2.x format
194 >>>>34 beshort x \b, %d x
196 >>>30 beshort 40 \b, Windows 3.x format
197 >>>>34 belong x \b, %d x
201 >8 string RMID \b, MIDI
202 # RIFF Multimedia Movie File format
203 >8 string RMMP \b, multimedia movie
204 # Microsoft WAVE format (*.wav)
205 >8 string WAVE \b, WAVE audio
206 >>20 leshort 1 \b, Microsoft PCM
207 >>>34 leshort >0 \b, %d bit
208 >>22 beshort =1 \b, mono
209 >>22 beshort =2 \b, stereo
210 >>22 beshort >2 \b, %d channels
213 >8 string CDRA \b, Corel Draw Picture
214 # AVI == Audio Video Interleave
215 >8 string AVI\040 \b, AVI
216 # Animated Cursor format
217 >8 string ACON \b, animated cursor
218 # Notation Interchange File Format (big-endian only)
219 >8 string NIFF \b, Notation Interchange File Format
220 # SoundFont 2 <mpruett@sgi.com>
221 >8 string sfbk SoundFont/Bank