.WMMP File Extension
File TypeWindows Movie Maker Project File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
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.