Hello there.

I have Movie Maker project files (end in .MSWMM extension) that were created on a Vista system but were erroneously not saved as finished movie files (.MOV or .AVI). I have since converted to Windows 10 and can no longer use the Vista operating system or the version of Movie Maker intended for Vista.

How can I convert the .MSWMM files to MP4?

Can I use a newer version of Movie Maker and bring in the .MSWMM files, then save them as completed movie files?  If so, how and which version would be best?

Thank you!