It is very well.

Muito boa a extensão.
Uso a anos para baixar vídeos.

I have been using this add-on since before I can remember possibly 12 + years and I find it an invaluable tool. Paul has kept it updated and replies if I contact him. I have paid for version and if like me you regularly require to download in Video or Audio or both then I recommend the paid version. Thank you Paul for possibly the most useful; add-on in my tool box.

no puedo descargar los videos

What a wonderful add-on!

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Très pratique et très facile. Impec change rien !

It works great. Although sometimes it wont get youtube.

Es la mejor extensión que existen entre todos los navegadores disponibles en la web. La recomiendo demasiado. Gracias a firefox.

My favorite vid grabber, been running it for a long time...much thanks to the developers!