MKVToolNix Review & Free Download

If you are looking for a way to play with the Matroska (MKV) format, this is the software to go for that comes with a collection of tools. With it, you will be able to split, merge, extract, and inspect MKV files with the ultimate ease. It also functions as a very good converter app for muxing and demuxing files to fit your goals.

To ensure that you are not limited to any specific platform, MKVToolNix supports all the popular platforms including Windows, Linux, and Mac. you are also open to using either the graphical user interface or the command-driven alternative depending on your preference. When it comes to editing, you are able to take apart tracks, chapters, tags on top of the ability to edit other constituents of an MKV file. To be a bit specific, you can tinker with the track name, track flags, language, timecodes, and tags. Besides that, MKVToolNix lets you define various parameters like the frame rate, cropping, aspect ratio, cues, delay, compression, and stereoscopy of your video in order to output the right kind of video file you need.

MKVToolNix is also capable of letting you edit video files in batch mode and as a result, save you a great deal of time and effort. To get the most out of MKVToolNix, we have lined up a tutorial section below where you will learn how to accomplish various tasks, especially for first-time users.

How to Use MKVToolNix

Considering the plethora of features that this video editing program delivers, it should be able to kick the ball out of the pack for any user depending on the task at hand. The good thing with MKVToolNix is that it does not hog your computer resources as it is a quite minimalistic app. In this tutorial, we are going to use the graphical user interface version of this software which is what most of us like to work with. Since you are here, it means that working with MKV files is something you are looking forward to and therefore, at the end of this article, creating, editing, and generating Matroska video files should be easy and overly convenient. Once you have set up this program, you should be looking at the interface below.

launch mkvtoolnix

Split MKV Videos

When you have a long MKV video file that cannot be shared conveniently, there comes a need to cut it into manageable pieces. Using the “Add source files” button labeled 1, import a  Matroska file which should be displayed in the region labeled 3 once it is successfully loaded. Do not forget to specify the output parameters under Label 2.

Split MKV Videos

Next, navigate to the “Output” tab labeled 1 below from where you will be able to access the split options as shown by Label 2. It is here that you will be able to define your split mode based on file size, duration, timestamps, or even frame/field numbers. On top of that, you get to define the maximum number of files and whether to link the files. After that, all you need to do is hit the “Start multiplexing” button labeled 3 to start the process.


Appending Videos

In the instance you are met by the need to join more than one video file, MKVToolNix has got your back as it is able to help you achieve this without much hassle. All you need to do is add your first video file making sure that it is of a supported format as shown below.

add source files

To append a video to the loaded file, right-click on the source file as shown below and pick the “Append files” options. Going by the name of that option, it means that you can append as many files as you need to. Clicking on that option will require you to select a video to append using the file explorer dialog box so make sure to navigate to the location of the video file and load it.


When the file to append is added, it will be displayed below the first file as shown by Label 1. If you wish you can append more files but if you are done, define the output options under Label 2 before kick-starting the process by clicking on the “Start multiplexing” button labeled 3. You should be able to find the joined file in the relevant directory you defined.


Edit the Properties of an MKV Video

I bet you have come across a movie that has more than on track like for instance in terms of audio, subtitle, chapter, and tags. With MKVToolNix, you have the chance to edit all these components in an MKV container with the ultimate ease. Actually, you even have an option to completely eliminate a specific track in the instance you do not need it in the final video.

For this to happen, first add a source file as shown below by Label 1. Clicking on the file will display the various tracks in the area labeled 2. From this area, you will be able to disable tracks and also pick a track of interest which will display the relevant properties in the area labeled 3. It is at this properties area that you are able to adjust the various characteristics of the track based on your preferences. For instance, you can change the video aspect ratio, the track name, cropping, audio parameters among other properties. Once you are satisfied with your adjustments, define a saving filename, and directory under Label 4 after which you just need to click the button labeled 5 to complete the process.


If you are looking for more regarding editing the header and chapter information of a video file, MKVToolNix has dedicated sections built into it among the main tabs of the program in the main interface. Those features are pretty detailed as much as possible to make sure that you have total control over what you need to edit in the video file. Apart from editing video files, MKVToolNix also opens you up to you coming up with your own MKV files by just clicking a few buttons. And with the job queue, you can work on multiple projects and have them processed in the order you choose.

MKVToolNix is definitely a one of a kind video editor software that takes a somewhat different kind of approach when it comes to tinkering with the Matroska video container. It does not disappoint at all regarding the features it has to offer and that makes it a good go-to solution when duty calls. Though it presents some kind of learning curve, having this guide at your beck and call will go a long way to make the curve less steep. Now that you are familiar with how to go about certain tasks using MKVToolNix, it is time for you to get tinkering with even more video files depending on the goal at hand.

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