Saving a Web Video Using Video Download Helper and Firefox

Go to Firefox

Launch it
Add on for Video Download Helper can be found here and it needs to be installed
http://www.downloadhelper.net/install.php

Click on Install on Firefox

Click Add to Firefox
Click Install

Then locate the Video Download Helper multi color icon in the upper right corner of the window> Click on it

Choose what size file to download >
Try to find the biggest choice so your quality is best

The next window will ask where you want to save the downloaded file.

Done you have a file to use in AVID or any other Editing application.