Video DownloadHelper is much faster than most alternatives. It is reliable, though I sometimes need to reload the page to get it to connect to the needed video. Results are high quality (1080p, or the native resolution of the clip). The watermark is not an problem for me, but I have now purchased the license anyway.
[ADDENDUM] With the license, downloads are noticeably faster. Also, when a video site changes its download protocols, it seems that the licensed version adapts more quickly.

Good for local file downloads.👍
Cons: Doesn't work for URLs with "live" in the name.
Example:
www.youtube.com/live/jOd7XgeQ4SA

It would be nice if this were fixed.

Great app. You can easily set it up on Windows (same with Linux with a little bit of work). Very convenient when you want to download something for a road trip that may not have the greatest internet.

Adds a GIANT QR code to the downloaded video unless you pay 20€. NOT WORTH IT

Brilliant tool - it would be cool to be able to resume interrupted downloads and cancel and save of ongoing downloads...

non funziona su tutto ma sulla maggioranza dei video. ho avuto problemi su solo alcuni video youtube lunghi.

Ich benutze den Helper seit vielen Jahren und bin immer noch begeistert. Für mich gibt es nichts zu meckern.

В последнее время приложение не работает, пишет Download failed. Sadly we failed at downloading that specific media.

You want $30 for software that doesn't do the job it advertises? That's egregious.

Vergognoso: ti costringe ad installare una componente esterna e poi, quando salva, piazza un QR code che copre quasi metà del video. A meno che non paghi 20 dollari. Le recensioni a 5 stelle sono sicuramente tutte finte.

Uma das melhores extensões que já baixei, faz com eficiência o que se propõe!

Très pratique et très fonctionnel !

Una de las mejores extensiones de Firefox, ¡lo máximo!

Super add-on. Merci

Love it! But sometimes it dosnt wanna download the full video... Often the full video, sometims only a few seconds of it.. kinda annoying when it happens, because often i dont even notice it after a bit

Ottimo per scaricare filmati da internet.