MKV3D File Extension

Programs that support MKV3D files

• Windows ⁴
• Mac OS ²
• Linux ²

Windows

• VLC media player
• Cyberlink PowerDVD
• MKVtoolnix
• MKVExtractGUI-2

Mac OS

• VLC media player
• MKVtoolnix

Linux

• VLC media player
• MKVtoolnix

How to open a MKV3D file?

The most common reason why a MKV3D 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.

VLC media player, Cyberlink PowerDVD and MKVtoolnix are recognized as the most popular software solutions for dealing with MKV3D files. To install the most up-to-date edition of MKVtoolnix, visit the official Moritz Bunkus website. You can download the build that works across all operating systems.

After installation, your operating system should automatically open MKV3D files with MKVtoolnix.

Make MKVtoolnix the default MKV3D viewer

Setting a default program by file type in Windows

1. Start by right-clicking on your MKV3D file and selecting the "Open With" option. From there, click "Choose another app" to continue;
2. Inside the popup window, scroll through the list of applications and specifically choose MKVtoolnix as the application to associate with your MKV3D file;
3. Check the "Always use this app" checkbox and click "OK".

Change the default app to open files on Mac

1. Right click or use Control + Left Click on the desired MKV3D file to access a dropdown menu of actions;
2. Select "Open in application" and click "Other";
3. Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
4. In this menu, select "All Programs", then find MKVtoolnix and check the box next to "Always open in the application."

How to edit a MKV3D file?

Editing MKV3D files requires installing professional software that lets you open and edit video files. Online editors have more limitations compared to dedicated Matroska 3D Video Format programs.

Best MKV3D editors in 2026

Based on these criteria, we have prepared a list of available MKV3D editors.

Convert to and from MKV3D

When a MKV3D file is not easy to work with, converting it to formats like MKV or other comparable types may help.

Converting a MKV3D file may not fully retain all functionality, but it is generally possible to return it to the original format.

Several applications, including Cyberlink PowerDVD, can convert MKV3D files offline without quality loss.

Convert MKV3D to other file formats

• MKV3D to MKV

Converting Files to MKV3D Format

• MKV to MKV3D

Finding answers to MKV3D file problems

There are some common issues with MKV3D files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.