All File Signatures & Extensions
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M2A
audio/mpeg
Primary Hex
FF F2
M2P
N/A
Primary Hex
00 00 01 BA
M2V
video/mpeg
Primary Hex
00 00 01 B3
M3A
audio/mpeg
Primary Hex
FF F2
M3U
audio/x-mpegurl
Primary Hex
23 45 58 54 4D 33 55 0D 0A
M3U8
application/vnd.apple.mpegurl
Primary Hex
23 45 58 54 4D 33 55
M4
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C
Apple Lossless Audio Codec file
audio/mp4
Primary Hex
66 74 79 70 4D 34 41 20
M4B
audio/mp4
Primary Hex
66 74 79 70 4D 34 41 20