Files with mks extension are related to the Matroska subtitles stream file format stored in Matroska container without video and audio data.

There are 3 other file types using
the MKS file extension!

empty icon.mks - MagicKey SmartType settings

empty icon.mks - MasterCook cookbook data

empty icon.mks - TACT data

Detailed description

Software that open mks file

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MKS file extension - Matroska subtitles stream

What is mks file? How to open mks files?

File type specification:

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

mks file icon: mks filetype icon

File extension mks is associated with Matroska file format. Matroska is a container format generally used for video, audio and subtitles. The native file extension, that is used by Matroska, is mkv.

The mks file contains only subtitle stream without video or audio data.

To Matroska subtitle stream can be import some of the most used subtitle formats such as VobSub subtitle format (sub), SubRip subtitle format (srt), Sub Station Alpha subtitle format (ssa/ass) and Core Media Player XML universal subtitle format (usf).

Updated: November 16, 2023

The default software associated to open mks file:

VLC media player icon

VideoLAN Project Team logoVLC media player  Microsoft Windows software

Company or developer:
VideoLAN Project Team

Very popular multimedia player developed for Windows, Apple Mac, Linux, Unix and various other operating systems and platforms.

VLC can playback many of the video formats (AVI, MKV, OGV, WMV, ASF, MOV...) and audio formats (MP3, AAC, M4A, OGG, FLAC...) as well as support of subtitles for video. It can also be used as a streaming server and multimedia transcoder.

Help how to open:

Use any compatible video players, like VLC Media Player to open .mks subtitle stream.

How to convert:

The .mks stream can be exported to other formats with some Matroska tools.

Related links:

Combined-Community-Codec-Pack

Homepage of MKV media format

Technical info about MKS subtitle file at Matroska website

List of video, audio and subtitle formats supported by Matroska

List of recommended software applications associated to the .mks 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 mks file, edit mks file, convert mks file, view mks file, play mks file etc. (if exist software for corresponding action in File-Extensions.org's database).

mks file players - programs that can play mks file - Matroska subtitles stream

Programs supporting the exension mks on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for play mks file action.

Microsoft Windows:

Main software associated with mks file by default:
VLC media player small icon VLC media player
Other suggested software:
The Core Media Player

Apple macOS / Mac OS X:

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