Thank you, Mr/Ms Developer for expertly keeping up with security updates and video format changes. No other extension or app can do as much is this one to the best of my knowledge. Vimeo and YouTube keep on changing their formats and VideoDownloadHelper works his magic to make the program work without much effort on user's part.

Program runs well on a 14 year old Laptop running W7 with 2GB Ram and a Pentium Duo processor. Also runs well on a Mac using High Sierra and i7 and 32GB Ram.

I've tried all the extensions to DL video and always come back to this one for it's simplicity and success rate without intervention on my part.