Install MKVToolNix 81 on Ubuntu / LinuxMint


This tutorial will be helpful for beginners to download MKVToolNix and install MKVToolNix 81 on Ubuntu and Linux Mint.

What is MKVToolNix?

MKVToolNix is a powerful toolkit for working with MKV files. It includes a set of tools for creating, modifying, and extracting information from MKV files. It is available for Windows, Linux, and OS X.

Also by using MKVToolNix, we can add subtitles to MKV files, and we can able to merge SRT, SUB, and IDX subtitle files with MKV Movies without re-encoding.

MKVToolNix 81 Changelog

  • New features
    • Support for reading single-layer and dual-layer Dolby Vision in HEVC streams.
    • Option to always enable forced subtitles in the MKVToolNix GUI.
    • Improved file name sequence detection for GoPro chaptered videos.
    • xyzvc_dump tool improvements.
  • Bug fixes
    • Improved handling of appended files and video dimensions.
    • Fixed dropping of first frame in appended HEVC/H.265 video.
    • Improved handling of Blu-ray MPEG transport streams.
    • Fixed mkvextract crashing on invalid AAC program config elements.
    • Fixed xyzvc_dump crashing on short last NALUs in Annex B files.
  • Other
    • AVC & HEVC dumper tool renamed from xvc_dump to xyzvc_dump.

How to Install MKVToolNix on Linux using Flathub?

Step 1: Setup the Flatpak on your system using the Quick Setup Guide

Step 2: Install MKVToolNix 80 using Flatpak

flatpak install flathub org.bunkus.mkvtoolnix-gui

Step 3: Run MKVToolNix 80

flatpak run org.bunkus.mkvtoolnix-gui

How to Install MKVToolNix on Ubuntu / Linux Mint from Repository?

Step 1: Import the MKVtoolNix GPG Key

sudo wget -O /usr/share/keyrings/gpg-pub-moritzbunkus.gpg

Step 2: Add the APt sources to the system.

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For Ubuntu 22.04

echo deb [arch=amd64 signed-by=/usr/share/keyrings/gpg-pub-moritzbunkus.gpg] jammy main

echo deb-src [arch=amd64 signed-by=/usr/share/keyrings/gpg-pub-moritzbunkus.gpg] jammy main

For Ubuntu 20.04

echo deb [arch=amd64 signed-by=/usr/share/keyrings/gpg-pub-moritzbunkus.gpg] focal main

echo deb-src [arch=amd64 signed-by=/usr/share/keyrings/gpg-pub-moritzbunkus.gpg] focal main

Step 3: Update the system and install MKVToolNix with GUI

sudo apt update && sudo apt install mkvtoolnix mkvtoolnix-gui


From this tutorial, you have learned how to download and install MKVToolNix on Ubuntu and Linux Mint.

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