While elementary OS’s included video player is light-weight and can play most of popular video formats, VLC media player on the other hand can’t be ignored due to its powerful features and ability to play any videos thrown at it. By default settings, the videos open by elementary OS video application when executed. However, you can assign VLC Media Player or any installed Video Player as the default program for launching videos. Let’s do a simple settings change.
Go to ‘System Settings’.
In the ‘Personal’ section, click on ‘Applications’.
In the ‘Default’ tab, you will see the default Web browser, Email Client, Calendar, Video Player, Music Player, Image Viewer, Text Editor, and File Browser.
For setting the default video program, click on drop-down list of the Video Player and select your favorite program from the list. If you have VLC Media Player installed, it should appear in the list.
That’s it. Next time you double-click on a video file, it will open via VLC Media Player, or what ever the program you have set.