What is this .MSWMM file? How do I create a movie with Windows Movie Maker?

A .MSWMM file is a Windows Movie Maker Project file. By saving the project, it allows you to return to the movide and make modifications at a later time. However, if you're satisfied with the movie and would like to upload and share the result through TeacherTube, you will need to choose the "Save Movie File" option under the "File" menu (which is different from "Save Project" that creates the .MSWMM file).

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