Só funciona se instalar uma aplicação que nada tem a ver com o firefox, e o que essa aplicação pode fazer é simplesmente qualquer coisa sem que voce saiba

I have already purchased a lifetime conversion, have I outlived myself?
WHY do I have to purchase again?

Easy and reliable for use: highly reccomended !!

Works with multiple sites but sometimes hard to distinguish file size of hits. Occasionally adds watermark unexpectedly. Have tried similar add-ons but this one works best overall.

Honestly amazing extension. The peace of mind this thing has given me is you cant imagine. The only problem i can think of is with some very rare sites it cant detect the videos and therefore cant download them, but like i said that's a 4% scenario so overall highly recommend...

Muy buena aplicación muy efectiva

Absolute great extension. Easy to use for it's purpose. Absolutely recommend.

Most videos that cannot be downloaded in other ways are also available in Video DownloadHelper.

Video DownloadHelper

Das ist eine sehr sehr gute App. Nur manchmal bricht es einfach ab und nicht immer ist der Grund ersichtlich. Es gibt einen Hinweis, wenn Network Fails, manchmal aber ist nicht klar, warum, ob Client oder Server-seitig. Wäre hilfreich zu wissen. Dennoch: sehr empfehlenswert

Grandissimo add-on! mai sbagliato un colpo; rasenta la perfezione

非常好用

Works Perfectly! I keep going back to it!

very good

很好用的插件

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