File Extensions Abbreviations and Acronyms

1. LISPM
   Bitmap graphics (Lisp Machine file)
2. LLSCF
   Lex Language Source Code File
3. LN03
   DEC LN03 Sixel file Bitmap graphics
4. LWOB
   Lightwave Object Format
5. M1S
   MPEG-1 systemstream
6. M1V
   MPEG-1 IPB videostream
7. M1V
   Mpeg-1 Video File
8. M22
   Farallon's MacRecorder Sound format, sampling rate 22k
9. M2A
   MPEG-2 audio Sound
10. M2A
    Mpeg-1 Layer 2 Audio File
11. M2V
    MPEG-2 IPB videostream Video
12. M2V
    Mpeg-2 Video
13. M3A
    Sound (MPEG-3 audio)
14. M3D
    3d animation macro (Corel Motion)
15. M3D
    3d Model File
16. M3D
    Dialux 3d Object File
17. M3U
    MPEG URL Sound reference file
18. M3U
    Media Playlist File
19. M4U
    File extension for an MPEG-4 Playlist file.
20. M4U
    Mpeg-4 Playlist

Last updated: March 20, 2022 — Total entries: 12,444