Congratulations, you just upgraded to Video DownloadHelper 6.1.0 for Firefox

Manage your collections of downloaded videos with thumbnails and metadata

340 Video DownloadHelper users lent $256780 to real people 7717 projects

Version 6.1.0 allows a better identification of detected videos

You probably noticed that when a Web page contains several videos, it becomes difficult to pick one to download from the list since all entries display the same title and thumbnail.
The 6.1.0 release of Video DownloadHelper addresses this issue by performing site-specific actions in order to obtain better information on the detected videos and display more accurate title and/or thumbnail in the add-on main panel.
That feature works for Facebook, Twitter and Tumblr.
You can disable those helpers from the add-on settings, tab Behavior:

This version also includes fixes and improvements for Electrolysis support.
If you don't want anyone accessing your computer to be able to see what you downloaded, the masked download feature allows you to only save encrypted versions of the videos to your disk.