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Format

MIDI Audio

Summary

Name
MIDI Audio
Identifiers
  • MIME: audio/midi
  • PUID: x-fmt/230
Format type
Audio
Description
A format that utilizes the cxcal Instrument Digital Interface (MIDI) protocol to record, store, and read sound event instructions such as pitch, tempo, velocity, and sustain. As the file does not contain actual recorded audio, the file size is greatly reduced.
Note
https://en.wikipedia.org/wiki/MIDI#MIDI_file_format https://fileinfo.com/extension/midi
File extensions
mid, midi
Source
Digital Preservation Department / The National Archives

Internal signatures

MIDI Audio

Note
<Chunk type>MThd <header length> 32-bit representation of the number 6, followed by <format> 2 bytes (must be 00, 01 or 02); <number of tracks> 2 bytes; and <division>2 bytes; followed by MTrk <track header>

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
4D5468640000000600[00:02]{4}4D54726B
Endianness
None

Changelog

  • Updated in V72

    Release date
    12 November 2013

    MIDI Audio: Extension information added.

  • Added in V45

    Release date
    6 December 2010

    MIDI Audio: Signature developed through PRONOM Research.