RIFF MIDI

Unknown

audio

The RIFF-based MIDI file format was created by Microsoft Corporation in 1991. The file is a RIFF container holding a MIDI file which may also include a sound bank.

Identify it

Extensions	`.rmi`
Signatures	`52494646` at byte 0 (RIFF-based MIDI)
PRONOM	`fmt/956`
Wikidata	`Q27967383`
Library of Congress	`fdd000120`

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Open it

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Convert it

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Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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