Here is how to do so:
First check the version of the VLC Player you have by typing in the terminal.
1. Add the following PPA by opening terminal and typing the following command:
sudo add-apt-repository ppa:mc3man/trusty-media
2. Next update it by typing:
sudo apt-get update
3. Then install the codec for the VLC player which will upgrade your current of 2.1.6 to 2.2.1 by typing:
sudo apt-get install vlc-plugin-libde265
Your VLC Player is now upgraded to version 2.2.1
to see the version of VLC you now have.
Note: This is not the official upgrade from Mint. There is a warning you need to read before accepting to install the PPA. Perform this install only after reading and considering the warning.