This review has two parts: The free version review, and the paid (Premium) version review.

The free version is pretty much junk. It takes hours to "convert" a video after downloading (a process they call "aggregation"), and the only reason the program does this is to add their advertising QR code in each and every frame. So, congratulations if you used this, you just spent $.05 in electricity, and a whole bunch of CPU time, adding a commercial to your video. What a useless piece of ****. At least it reliably detects and downloads HD and higher resolution videos (something which the other free converters can't even achieve).

The paid version ($28.50 USD, 18EURO as of this review) is a lifetime license, it works great, it's fast, and it downloads HD+ resolution videos reliably from YouTube. It will also convert on demand, and probably has some other features I haven't explored yet. It's sad that I had to pay money to get a good product, but the programmers gotta put food on the table. If it takes holding people hostage to pay for their software to do it, then that's the choice. Pay up or don't bother installing this add-on.

This extension used to be simple, intuitive and great to use, now it is useless garbage. Removing it from my Firefox.

Was cooerced to write this revue by CONSTANT nag screen to do so. It works - not as well as the add-on I prefer but with Mozilla now being broken for many of the add-ons it needs to work, this was the only alternative I could find. It works a lot of the time but many times, it posts a HUGE watermark across the downloaded video unless you pay for a highly overpriced converter too. I'll be dumping this add-on as soon as I find a workable alternative or Mozilla gets their act together and fixes Firefox. I'd have been glad to pay a fair price but what they ask - plus the constant nag screens - makes me VERY unhappy with it. Enough said.

A cualquier persona y donde quiera que se encuentre le recomiendo esta aplicacion es exelente, funcional y rapida en la descarga, le pongo cinco estrellas, con toda tranquilidad porque se que ustedes los y las que se animen a usarla me daran la razon.

1. Медленная закачка
2. При загрузке потового видео часто теряет аудио дорожку

Télécharge toujours les vidéos et audios, mais moins facilement qu'avec les précédentes versions :
le dossier de téléchargement est régulièrement remis à c:\users\dowloadhelper, c'est pénible
l'application "companion" s'incruste même lorsqu'elle n'est pas nécessaire...
Vivement qu'un concurrent propose des performances similaires, je changerai avec plaisir.

Another great add-on killed by the new Firefox add-on limitations. I'm simply not interested in downloading outside software for what's supposed to be a simple browser add-on. Not mig's fault, but I'll be either finding a different add-on or changing browsers to one that can do what I want it to without all the fuss.

Para salvar somente o áudio MP3 de um vídeo YouTube a extensão pede que instale o ConvertHelperSetup e posteriormente o VdhCoAppSetup. Mesmo assim, é trabalhoso. Uso Firefox 58 para Windows 10. Gostaria de revisar este comentário quando aperfeiçoar a usabilidade da extensão. Mantenho desativada essa extensão para ativar só quando usar.

after downloading, it doesn't save immediately, it says aggravating the file, I don't know what it means, and it makes my browser crash. will try to get this again once you resolve the issue.

バージョンアップしたらやっぱりダウンロードヘルパーは使えません。メインのブラウザーを変えますわ。

UPDATE: After over 2 years of using VDH on macOS, I find that not enough attention has been paid to making it run well on the Mac platform, especially in YouTube. It can be difficult to tell whether or not you are downloading the audio or video portion. You'll have to pay $30 to get your videos aggregated (audio and video combined) or else take extra steps after download to combine the audio and video. And then it will also have a QR Code image in the top right corner! If you download from YouTube a lot, then there is a better extension for you [Easy YouTube Downloader] that will download the video aggregated (with audio and video together) in one click at 720p (high quality) for free.

Original Review:
VDH 7.2 works well on Firefox 58.0.2 running on macOS Sierra 10.12.6.. Although not every feature has returned to the Web Extension from its legacy days. But the developers are working on it! Most features you would use are available. Mig, the author, is very responsive on the forums when he is not busy programming to update and fix issues. He has a positive attitude, is good-natured, and is genuinely trying to get the best version of this web extension to us as fast as he can. Please be patient and don't abuse him as he gets VDH on track. I found that some of my issues were not VDH's fault but rather caused by the tracker blocking features of the new Firefox. For me everything has worked very well except downloading some DASH videos that would not aggregate. This issue has improved with the frequent new releases of the Web Extension as mig copes with the restrictions on the code created by Firefox Quantum. This Web Extension is a job well-done and I recommend it.

It only works sometimes with the download button in the bottom left hand corner. The other download button has gone and sometimes re-appears for downloads from my email. I have an error message going on about running an Administrator account with elevated privileges, what BS is that? Says IDM has no sufficient access rights to show Download panel inside its windows (error code 5). Talks about unchecking a box in the administrator part of the browser. How am I supposed to do that, its got nothing to do with me?
Anyway, I'm guessing its because I have the trial version as I never had any problems with the bought version I had before. I would purchase IDM but now I'm not sure if it will work. Can you confirm that the paid one works? Or fix this free one. Thanks B Ross

It used to work pretty well. Now it fails as often as it downloads. And you can't see where it's saving the video when you go to Tools - Downloads. And it frequently changes the default download folder on its own.

I've been a big fan of Video Download Helper for a while now... until version 7.1.2. Now over half my downloads fail and what doesn't takes twice as long using the "Companion App".

Regressed from previous versions. Usage not straightforward, tricky, and slow. Thanks for the free offering though.

pay for converter

Requires a companion app to be installed on your computer and updated to use in your browser.

Downloaded VDH, and when I went to install, Firefox warned me of the permissions this program requires - ugh!
Looks like spyware.
I aborted install.

Download Helper will not download videos with music in them.

no encuentro la palabra instalar