Screw this addon for forced conversion of videos in order to add that stupid ugly ass QR code in them. My CPU overheated because of the conversion load and my notebook restarted because of that. As a result I lost some data I was working on.
F.U.C.K. you the author of this piece of sh1t.

Useful addon.

Video DownloadHelper is a tremendous asset to the disabled, especially to the elderly who don't have Internet or can't easily navigate the Internet. This user-friendly add-on enables shut-ins and invalids to watch educational and entertaining programs seen by billions on the Internet daily at the time best suited for them within the confines of their home. If you have a credit card and use this software, please donate something to continue this wonderful service to the disabled. I rate this software with five stars even though only four stars are showing.

I like this.. very useful and no problem so far..

非常喜欢这个插件，功能真是实用啊

***** PERFECT *****
I have been using Video DownloadHelper since 2009!
It worked PERFECT then and every update since has made it BETTER!
It is without a doubt, the BEST Add-on I have EVER USED!

Die beste App

AWESOME!
I always used to get pissed whenever I couldn't download the right version of a song I want. Now I don't.
Highly recommended with YouTube.

Mto ruim....baixar algo no youtube na versao free reencode o arquivo com uma marca d'agua ate ai blz....+ 4horas fala serio

Did not work. Running Firefox 60.4.0esr (64-bit). Attempted twice to download a 90 minute video from YouTube. According to NetWorx, VDH downloaded all 1700 megabytes of the MP4, but after the download was completed, all that was in the download folder was a 100 mB clip with only a few seconds of the beginning of the video. And it was not in the folder that I had specified in Settings. A search of the hard drive failed to uncover just where the app had placed the 1700 mB data stream while it was downloading, so I assume the app erased it. Removed this extension, I'll have to try and find something else.

Does not work, and want's to install other nasty Stuff

Thanks for this program. It's the best one I've ever used

estupenda aplicación!

非常好用

Très bon plan facile d'usage même pour les inadaptés en informatic.

la crême de la crême! encore et toujours!

me ha gustado mucho el complemento, lo encuentro facil e intuitivo, comprendo que por cuestion de monetizacion ciertas funciones estan restringidas pero en general es el mejor complemento gratuito que he probado

This add-on is simple but powerful. You can download from a large number of sites with a couple of clicks and have a file ready to process however you like. There's an extra helper file needed but this is easy to install. After years of use I can say I've rarely if ever had a problem.