If you install it right now, you'll find MKVToolNix GUI, mkvinfo, and mkvmerge GUI. To be fair, there are three, but soon only two will remain. MKVToolNix is a toolset, which means that there is more than one. You don't have to use the terminal, just double click on the DEB file and install it with the Ubuntu Software Center. One is the applications itself and the other one is the GUI. The only thing you need to keep in mind is that two packages have to be installed, one called mkvtoolnix_8.2.0-0~bunkus01_b and then followed by mkvtoolnix-gui_8.2.0-0~bunkus01_b. Fortunately, the developer provides packages for all the major distros out there, so it's not really a problem. Numerous updates have been made in the meantime, so you only have the option of installing it from the official website. As usual, the version available in the Ubuntu repos is very old. I tested MKVToolNix in Ubuntu 15.04 and installing it is easy, but don't rely on the Ubuntu repositories. It also works the other way around, you can merge multiple video and audio sources into a single one, and explaining why that is incredibly useful is not necessary.

Managing multiple video and audio sources from a single file can be difficult, but with the right application that can be done very easy. In addition, i's easier to understand why you would need a tool like this one. If you add the fact that embedding subtitles is possible as well, then you can understand why it's preferred by so many people. It's also capable of carrying numerous videos and audio sources in a single file, which is very useful if you have something dubbed in multiple languages.

The only difference is that it follows an open standard free container format, which makes it all the more interesting for people who want to use it for packaging.

Matroska, or MKV for short, is just a container, pretty much like anything else such as MP4, AVI, and so on. Some of you might wonder what this MKV file format is. The truth is that the application can do more than just tell you details about any particular file, and I want to show you some of these features. At least, this is what I was using it for. MKVToolNix has been around for a long time, and many users already know about its existence, but it's mostly used to identify and read the properties of MKV files (Matroska). Nonetheless, it's a useful app, and it would be nice to take a closer look at it. The application falls into a very crowded niche, and there is not much competition for it. MKVToolNix is a set of tools that can be used on MKV files, which is a video format that grows ever more present in our daily lives.

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