#------------------------------------------------------------------------------ # riff: file(1) magic for RIFF format # See # # http://www.seanet.com/users/matts/riffmci/riffmci.htm # # AVI section extended by Patrik Rådman <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 >>20 leshort 1 \b, Microsoft PCM >>>34 leshort >0 \b, %d bit >>20 leshort 2 \b, Microsoft ADPCM >>20 leshort 6 \b, ITU G.711 A-law >>20 leshort 7 \b, ITU G.711 mu-law >>20 leshort 17 \b, IMA ADPCM >>20 leshort 20 \b, ITU G.723 ADPCM (Yamaha) >>20 leshort 49 \b, GSM 6.10 >>20 leshort 64 \b, ITU G.721 ADPCM >>20 leshort 80 \b, MPEG >>20 leshort 85 \b, MPEG Layer 3 >>22 leshort =1 \b, mono >>22 leshort =2 \b, stereo >>22 leshort >2 \b, %d channels >>24 lelong >0 %d Hz # Corel Draw Picture >8 string CDRA \b, Corel Draw Picture !:mime image/x-coreldraw # AVI == Audio Video Interleave >8 string AVI\040 \b, AVI !:mime video/x-msvideo >>12 string LIST >>>20 string hdrlavih >>>>&36 lelong x \b, %lu x >>>>&40 lelong x %lu, >>>>&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 # # 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 # 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