jfor.org

Audio

What is a .mid file?

A .mid file is an ESRI MapInfo Data File. This is an audio format. Confusingly, this extension has been used by 2 different formats over the years — they're all listed below.

This extension has been used by more than one format

2 different formats have claimed .mid over the years, so two files with the same extension aren't necessarily the same kind of thing.

How to open a .mid file

  • VLC plays almost every audio format ever made.
  • Audacity opens it for editing.

The registry records this extension against ESRI MapInfo Data File, MIDI Audio, so software from that family is the most likely match.

How to convert a .mid file

  • Export as .mp3 from Audacity or VLC for maximum compatibility.

MIME type

When a .mid file travels over the web, servers label it with this MIME type:

audio/midi

What's a MIME type?

The technical record

For archivists, developers and the merely curious: these are the PRONOM registry entries for .mid.

Format nameVersionMIME typePUID
ESRI MapInfo Data Filex-fmt/225
MIDI Audioaudio/midix-fmt/230

Got another one?