Video
What is a .mswmm file?
A .mswmm file is a Microsoft Windows Movie Maker File. This is a video format.
How to open a .mswmm file
- VLC is the answer for the vast majority of video files.
- mpv is a lightweight alternative.
The registry records this extension against Microsoft Windows Movie Maker File, so software from that family is the most likely match.
How to convert a .mswmm file
- HandBrake converts to .mp4, which plays on effectively everything.
The technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .mswmm.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Microsoft Windows Movie Maker File | — | — | fmt/971 |