MPEG Audio Layer I

Unknown

audio

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Identify it

Extensions.mp1.m1a
MIME typesaudio/mpegaudio/mpa
Signatures
fff6 at byte 0 (MPEG 1 Audio Layer I (protected))
fff7 at byte 0 (MPEG 1 Audio Layer I (unprotected))
fffe at byte 0 (MPEG 2 Audio Layer I (protected))
ffff at byte 0 (MPEG 2 Audio Layer I (unprotected))
PRONOMfmt/347
WikidataQ919226

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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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