# 4D 54 68 64 — File format magic numbers

For 4D 54 68 64, offset is 0; extension is mid midi; format is MIDI sound file [ 43 ], recorded from its source on 2026-08-03.

- **Hex signature:** 4D 54 68 64 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** mid midi
- **Format:** MIDI sound file [ 43 ]

## What the source says

> mid midi | <https://en.wikipedia.org/wiki/MIDI#Standard_MIDI_files> MIDI sound file [ 43 ]

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).