Files with m4s extension are  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!

empty icon.m4s - Myst IV: Revelation saved game

Detailed description

Software that open m4s file

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M4S file extension - MP4Box HTML5 MP4 video segment file

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

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

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

Updated: January 5, 2021

The default software associated to open m4s file:

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:

Use MP4Box to work with *.m4s files.

How to convert:

Conversion to other formats is not possible.

List of software applications associated to the .m4s file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android 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 m4s files.

Software that open m4s file - MP4Box HTML5 MP4 video segment file

Programs supporting the exension m4s on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about MP4Box for open m4s file action.


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