.WMMP File Extension
Windows Movie Maker Project File
3.8 | 4 Votes
What is a WMMP file?
Video project created with Microsoft Windows Movie Maker, a digital video-editing program for creating home movies; includes a video timeline, references to video clips used in the movie, transitions, effects, and other information.
Some versions of Microsoft Windows Movie Maker save project files with a .MSWMM extension.