An m4s file extension is related to the MP4Box HTML5 MP4 video segment format used to store video data.

There is one other file type using
the M4S file extension!

m4s file icon.m4s - Myst IV: Revelation save game file

Detailed description

Software that works with m4s file extension

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M4S file extension - MP4Box HTML5 MP4 video segment

What is m4s file? How to open m4s files?

File type specification:

Digital video and movie file type icon Digital video and movie file type

The m4s file extension is associated with the MP4Box a multimedia packager available for Windows, Mac, Linux, Android and iOS operating systems.

The m4s file contains MP4 video segments for streaming video via Internet to HTML5 video player. Segments contain about 10s of video data.

The default software associated to m4s file type:

MP4Box picture or screenshot

MP4Box  Multiplatform software

MP4Box is multimedia packager that an be used for performing many manipulations on multimedia files like AVI, MPG, TS, but mostly on ISO media files (e.g. MP4, 3GP).

Help how to open M4S files:

Many common video formats can be played back with some universal media player like VLC player. However, some highly specialized and proprietary formats may only be supported in certain players that are usually provided by the original developer.

For general information try to look at:
Basic info how to open video and movie files

How to convert file with extension M4S:

Generally speaking, you will need a multimedia converter if you want to convert one video format to another. You can find hundreds of converters on the internet, but their quality may vary and many may not even support every video format. So always use some of the more popular and reliable software first.

For general information try to look at:
Basic info how to convert video and movie files

List of software applications associated to the .m4s file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open m4s file, edit m4s file, convert m4s file, view m4s file, play m4s file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting of the m4s files.

  • Create m4s file
  • Others m4s file

Programs that can create m4s file - MP4Box HTML5 MP4 video segment

Click on the link to get more information about MP4Box for create m4s file action.


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M4F file extension > Digital video and movie file types

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file extension M4U


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