No Problems works as advertised.

very useful, support many video streaming sites

Very good

БОЛЬШОЕ СПАСИБО ЗА ВАШУ ПРОГРАММУ !!!

allows the download off of ANY website, even conserves the name, and gives multiple qualities.

10/10

Muito bom e Rápido

Дополнение здорово выручает когда нужно скачать музыку с ресурса где этого сделать нельзя. 5 баллов!

很方便。别的浏览器下载视频没这么简便好用。

Ormai sono anni che uso Video DownloadHelper, funziona benissimo e non mi ha mai tradito

Good.

Easy to monitor and download files

very good

Sempre molto affidabile e divertente.

My preferred video downloader - haven't come across a site where this addon does not work. Nothing else comes close. Can sometimes take a while to convert files, but it gets the job done, every time. Great addon!
Updated 17/04/20: Still the best video downloader out there!

me gusta es bueno pero baja la calidad de los colores a veces

Clearly I have used this add-on for some time. I have had very few problems. The speed of the downloads is most dependent on the specific site - on average quite acceptable. Sometimes there are a variety of choices for a particular video. The user has to determine which is the proper one, although that is not usually difficult.
I am very happy with this program. It does just what I want.

Best tools!

Il Miglior componente aggiuntivo di Firefox

I have several hobbies and use tutorials to continue learning about then. I have used Video DownloadHelper for years to help me download the best of them. It downloads seemingly every format of video, although with the newer version of Firefox it needs an extra bit of separate code to help it achieve it, but that's not a problem. I haven't yet found another addon that can do the same.
So now I have a video library of all my most useful tutorials, thanks to Video DownloadHelper. Highly recommended!
P.S. It does lot of other things as well.

working as of 14 Feb 2018

A large number of settings and the ability to download the file in high resolution. Cool.

no problems at all.