Press enter to confirm your selection when it asks.

It will show a huge list of packages to be installed. When you type the password, nothing is displayed on the screen.

When you enter the command, you’ll be asked to enter your password. You may want to update the package cache if you are not running Ubuntu (Ubuntu does it automatically): sudo apt updateĪnd then you can install it in Ubuntu default edition using this command: sudo apt install ubuntu-restricted-extras In this guide, we'll look at the container formats used most commonly on the web, covering basics about their specifications as well as their benefits, limitations, and ideal use cases. Since ubuntu-restrcited-extras package is available in the multiverse repository, you should verify that the multiverse repository is enabled on your system: sudo add-apt-repository multiverse The format of audio and video media files is defined in two parts (three if a file has both audio and video in it, of course): the audio and/or video codecs used and the media container format (or file type) used. Open a terminal in Ubuntu by searching for it in the menu or using the terminal keyboard shortcut Ctrl+Alt+T. Although it isn't free, Roxio software can be used to play MKV files. Some of those applications will open an MKV file on macOS, too, as can Elmedia Player. If you're on Windows, some other MKV players include MPV, MPC-HC, KMPlayer, DivX Player, MKV File Player, or The Core Media Player. In any case, you can install the package using command line and it’s very simple. Your best bet for playing most MKV files is to use VLC.

I find it surprising that the software center doesn’t list Ubuntu Restricted Extras.

Matroska codec for media browser