How To Open AVI Files
Download and install your free copy of VLC Media Player.
Run VLC Media Player for use.
Open a folder by clicking the menu Media > Open Folder.
Navigate and find the MKV file you wish to open.
Click Choose Folder. The MKV file should load.
If it is a movie or TV show, it will display an on-screen menu as it would on a DVD player. Click on the on-screen menu’s Start option to begin playing your media.