How to open M1S files

Did your computer fail to open a M1S file? We explain what M1S files are and recommend software that we know can open or convert your M1S files.

What is a M1S file?

The M1S file extension indicates to your device which app can open the file. However, different programs may use the M1S file type for different types of data.

While we do not yet describe the M1S file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about M1S files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

Generic M1S

These apps are known to open certain types of M1S files. Since many different programs may use M1S files for different purposes, you may need to try a few of the apps to open your specific M1S file.

QuickTimeQuickTimeUser submitted
Any Video Converter ProfessionalAny Video Converter ProfessionalUser submitted
Storm Codec UnicodeStorm Codec UnicodeUser submitted
RealPlayerRealPlayerUser submitted
Microsoft Windows Media PlayerMicrosoft Windows Media PlayerUser submitted
StormPlayerStormPlayerUser submitted
Aplus Video Converter FreeAplus Video Converter FreeUser submitted
GetASFStreamGetASFStreamUser submitted
BitTorrentBitTorrentUser submitted
progeCADprogeCADUser submitted

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

We have not verified any programs that we know for certain can work with M1S-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with M1S-files. If you know one, please use the Suggest link below and tell us about it!