M4S file format description

Many people share .m4s files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .m4s file can be edited, converted or printed with. On this page, we try to provide assistance for handling .m4s files.

2 filename extension(s) found in our database.

.m4s - Myst IV: Revelation Saved Game

The M4S game data files are related to Myst IV: Revelation. The M4S file is a Myst IV: Revelation Saved Game. Myst IV: Revelation is the fourth installment in the Myst computer game series, developed and published by Ubisoft.

Myst IV: Revelation
Game Data files
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Myst IV: Revelation Saved Game related extensions:
Another War Game Data
Age of Empires: The Rise of Rome Campaign Data
Pathfinder: Kingmaker Saved Game
Zoo Tycoon Data
Aces Hight Map TYP Data
NetHack Game Level Data

.m4s - GPAC MP4Box MP4 Video Segment

The M4S video files are related to GPAC MP4Box. The M4S file is a GPAC MP4Box MP4 Video Segment. MP4Box is a multi-purpose command line tool to create and edit MPEG-4 Systems presentations and manipulate ISO-media files.

Video files
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GPAC MP4Box MP4 Video Segment related extensions:
JVC Everio Video
Nullsoft Streaming Video
ATI Video Card Recording
Windows Media Redirector
AVS Media Player MS-DVR Video
TMPGEnc DVD Author Video

Naturally, other applications may also use the .m4s file extension. Even harmful programs can create .m4s files. Be especially cautious with .m4s files coming from an unknown source!

Can't open a .m4s file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .m4s file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

m4, m4c, m4e, m4x, mes, mrs, ms, ms4, mts

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Yamaha Motif ES Multi Part Editor File
TrimeTool MES Output
IBM Voice Type Languages Newuser Data
MAILERS+4 Index Data
SpectraMagic NX Data
A2B Player Audio Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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DataTypes.net >> M4S file