Microsoft Movie Maker can export and its own projects to several multimedia formats (including the WMV) using the publishing or sharing function. There is no other way how to convert *.mswmm files, because they are just projects that contain references and links to the actual multimedia content, not the content itself.
Convert Microsoft Windows Movie Maker project to Windows Media Video.
We have found 2 software records in our database eligible for .mswmm to .wmv file format conversion.
Microsoft Windows software - convert mswmm to wmv on Windows
A proprietary video editor for Microsoft Windows
Convert from mswmm file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned mswmm to wmv. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A video editing software distributed with Microsoft Windows