This used to be an incredible 5 star extension. Sadly over the years it has become increasingly dated and a poor performer. There is an odd, possibly caching issue, where if you close a tab Firefox freezes while Video DownloadHelper does something.

Just great!

I can see what you're trying to do with the QR code thing. But if its covering almost half of the video making the video useless and 30 dollars for the license to remove the QR code then the program isn't free.
To those reading, I recommend "4K Video Downloader", the only limit is 10 free downloads per day before they ask for payment and NO watermarking. Which I thought was so reasonable that I do subscribe the $15/year unlimited license even though I don't even download that much. They also have much better features.

Funktioniert bei mir prima und schnell

Très bonne application qui fonctionne à merveille...Indispensable+++

Nice add-on! Thery useful!

This seems to be the "go-to" for the purpose. Well managed add-on always seems to get the job done. Thanks mig, Paul :D
~masodo InfinitelyRemote dot com

very-veryCOOL ALL TIME AND EVERYWHERE WORKS GOOD