As others have stated, the user experience is what you always get when a techie tries to also set up the UI. It's not the worst, but it is horribly obscure.

It uses a number of terms that seem to exist only in the coder's head. It takes a while to figure out where the videos get saved to, and how that awful thing with the three colored balls works, but after a while you get it.

Once you do, it works well.

nice n easy to use

El pluging era fantastico pero ahora quieren que pagues por usarlo.

Can't always detect videos for downloading, but it's the number one way I download a video if it's an option. I can't think of any real problems I've had with it, except some video sites stream content and you have to keep it playing while it's downloading or the site stops sending the data, I guess. Sometimes the video will be a bit choppy, but that's so incredibly rare I'd wager it's a site issue, not the addon. Give it a try, I doubt you'll regret it.

EDIT: Taking off one star for constantly opening up new pages when it updates. I DO NOT CARE THAT THIS ADD-ON HAS BEEN UPDATED. DO IT WITHOUT TELLING ME. Could literally never update again and it wouldn't make a single iota of a difference to me.

Also, be aware of the review mentioning QR codes is specifically referring to a form of video download called "ADP" and they likely tried to download something off YouTube. YouTube is NOT supported as a download, likely out of cowardice from the developers that they'll have Google on their rear-ends over it. You can download those with any basic YouTube to MP4/MP3 site, instead.

very awesome

falla de vez en cuando.

This is a really very good software. It also can cover and support most of the video types for downloading.

I've used this add-on for about 10 years. As YouTube evolves, some of their videos can no longer be downloaded with this add-on, but it's still good to have, and they do update it from time to time. If Download Helper can't download the video I want, I use another add-on or method, such as Easy Youtube Video Downloader Express, or I use VLC media player, or any other number of methods. DownloadHelper is a good and old tool in my digital toolbox, although it certainly can not do everything, and sometimes depending on how the video is downloaded, there is a watermark.