Do you have e.g. large collection of sermon videos, here´s a tip for you if you are a linux user: 

from the apt repositorio https://repo.bittiainen.com you can install the Free Trial of BVideoconverter, just download the bvcinst.sh install script , permit it to run as a program and run it, and answer questions. Read the README.LICENSE from https://repo.bittiainen.com and EULA.pdf and other documents. Buy the PRO license from https://bittiainen.com . Also in the menu choices in https://bittiainen.com/index.php/home you can read more detailed instructions and information. Get the Free Trial from:

https://bittiainen.com/index.php/get-the-free-trial-bvideoconverter

Or if you like GitHub more you can visit: https://github.com/mikkosilvfi-cryptob/bvideoconverter/releases/latest

The videos converted with Free Trial have watermarks, so buying the PRO license asap is essential.

Merry Christmas