MKS File Extension

MKS file icon

Matroska Subtitles Stream

What is a MKS file?

Files with the MKS extension are specifically tied to Matroska Subtitles Stream, a Video Files type, and there are 445 files in this category.

With the creation of the Matroska Subtitles Stream (MKS), VideoLAN introduced file format along with 4 programs built for their use.

MKS file support extends to various operating systems, including Windows, Mac OS and Linux, as well as mobile devices running Android. You can play a MKS file using one of 2 programs, for example VLC media player and The Core Media Player.

How to open a MKS file?

The most common reason why a MKS file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

Thanks to their popularity, VLC media player and The Core Media Player are often the go-to programs for managing MKS files. To install the updated version of VLC media player, simply go to the VideoLAN site and download the installer compatible with all major platforms.

After setup, the operating system should recognize MKS files and link them with VLC media player.

Set VLC media player to open MKS by default

Change default apps on Mac

  1. Right-click or use Control + Left-click on the desired MKS file to access the file’s context menu;
  2. Choose "Open in Application" and click "Other";
  3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
  4. Choose "All Programs" within this menu and locate VLC media player. Check the box next to "Always open in app" to set it as the default program.

Change a default app in Windows

  1. Start the process by right-clicking on your MKS file and selecting "Open With". From there, click "Choose another app" to continue;
  2. Find the VLC media player application in the pop-up window and select it as your preferred program;
  3. Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening MKS files.

Easy MKS Troubleshooting

MKS files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

Why does VLC media player stop responding or crash intermittently?

Lack of regular software updates can cause VLC media player to crash. Make sure you have installed the latest updates for VideoLAN products.

Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.

What are the best practices for repairing a MKS file that has gone bad?

Start a recovery program, open the damaged MKS file and then select the "Repair" menu item to start the repair procedure. Please wait patiently for the recovery process to finish as it will automatically repair the damaged video files.

How can I confirm if my MKS file has been damaged?

Characteristics of corrupted MKS video files can include:

  • Trying to work with the archive in VLC media player or other programs causes instability or program crashes;
  • The file does not open correctly or displays error messages;
  • An unexplained increase in the size of the MKS file;
  • The file operation is accompanied by the display of error messages;