How to Set VLC Media Player as Default Video Player on Ubuntu 18.04 LTS?
Install VLC first, if you don't have it installed.
https://www.dailymotion.com/video/x6oyqef
Step 1: Click on Panel at the top right.
Step 2: Click on Settings, and then click on 'Details.'
Step 3: Click on 'Default Applications.'
Step 4: Select the dropdown next to Video, and then click on 'VLC Media Player.' After that, close the settings window.
It's done
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