Category
Audio File Signatures
Audio and sound formats including MP3, WAV, FLAC, AAC, Ogg, and MIDI, and how to identify each by its binary header.
45 formats in this category
.aac
MPEG-4 Advanced Audio Coding
Primary Hex
FF F1
.ac3
AC3
Primary Hex
0B 77
.acd
Sonic Foundry Acid Music File
Primary Hex
72 69 66 66
.aif
Audio Interchange File Format (AIFF)
Primary Hex
46 4F 52 4D
.aifc
AIFC
Primary Hex
46 4F 52 4D 2E 2E 2E 2E 41 49 46 46
.aiff
Audio Interchange File Format
Primary Hex
46 4F 52 4D
.amr
Adaptive Multi-Rate ACELP
Primary Hex
23 21 41 4D 52
.au
NeXT/Sun Microsystems µ-Law audio file
Primary Hex
2E 73 6E 64
.caf
Apple Core Audio File
Primary Hex
63 61 66 66 00 00
.csd
Csound music file
Primary Hex
3C 43 73 6F 75 6E 64 53 79 6E 74 68 65 73 69 7A
.dsf
DSD Storage Facilityaudio file
Primary Hex
44 53 44 20
.flac
Free Lossless Audio Codec file
Primary Hex
66 4C 61 43
.gslib
GSLIB
Primary Hex
50 53 46
.kar
KAR
Primary Hex
4D 54 68 64
.koz
Sprint Music Store audio file
Primary Hex
49 44 33 03 00 00 00
.m2a
M2A
Primary Hex
FF F2
.m3a
M3A
Primary Hex
FF F2
.m3u
M3U
Primary Hex
23 45 58 54 4D 33 55 0D 0A
.m4a
Apple Lossless Audio Codec file
Primary Hex
66 74 79 70 4D 34 41 20
.m4b
M4B
Primary Hex
66 74 79 70 4D 34 41 20
.mid
Musical Instrument Digital Interface
Primary Hex
4D 54 68 64
.midi
Musical Instrument Digital Interface
Primary Hex
4D 54 68 64
.minigsf
MINIGSF
Primary Hex
50 53 46
.minipsf
MINIPSF
Primary Hex
50 53 46
.minipsf1
MINIPSF1
Primary Hex
50 53 46
.mod
MOD
Primary Hex
45 78 74 65 6E 64 65 64 20 4D 6F 64 75 6C 65 3A
.mp2
MP2
Primary Hex
FF F2
.mp2a
MP2A
Primary Hex
FF F2
.mp3
MPEG-1 Audio Layer 3
Primary Hex
49 44 33
.mp4a
MP4A
Primary Hex
66 74 79 70 4D 34 41 20
.mpga
MPGA
Primary Hex
FF F2
.oga
Ogg Vorbis Codec compressed Multimedia file
Primary Hex
4F 67 67 53
.ogg
Ogg Vorbis Codec compressed Multimedia file
Primary Hex
4F 67 67 53 00 02 00 00 00 00 00 00 00 00
.opus
OPUS
Primary Hex
4F 67 67 53 00 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 4F 70 75 73 48 65 61 64
.psf1
PSF1
Primary Hex
50 53 46
.psflib
PSFLIB
Primary Hex
50 53 46
.ra
RealAudio streaming media file
Primary Hex
2E 72 61 FD
.ram
RealMedia metafile
Primary Hex
2E 72 61 FD
.rmi
Resource Interchange File Format --Windows MusicalInstrument Digital Interface file
Primary Hex
4D 54 68 64
.sap
SAP
Primary Hex
53 41 50 0D 0A
.sib
Sibelius Music - Score file
Primary Hex
0F 53 49 42 45 4C 49 55 53
.snd
SND
Primary Hex
2E 73 6E 64
.spx
SPX
Primary Hex
4F 67 67 53 00 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 2E 53 70 65 65 78 20 20 20
.wav
Resource Interchange File Format --Audio for Windowsfile
Primary Hex
52 49 46 46 2E 2E 2E 2E 57 41 56 45
.wma
Microsoft Windows Media Audio/Video File
Primary Hex
30 26 B2 75 8E 66 CF 11