Suele funcionar bien por un tiempo, pero cada vez que se actualiza Firefox presenta fallos y es necesario desinstalarlo y esperar a que actualicen también el add-on.
Adicionalmente, suele presentar algunos errores al bajar videos en 720px. Algunas veces muestra descarga, pero al bajarla resulta que esa versión no existía y lo que hace es bajar el último video que hayas descargado a 360px y sobre escribir el que crees que estás bajando a 720px.
Sin em bargo, es una buena extensión vale la pena probarla y utilizarla.

I use this add-on everyday to get YouTube videos for offline use, I use it to populate my my personal media server [Plex] & to help others with tutorial videos at work. I have the paid version since 2018 it's worth the money for quality 1080p videos.

PRO Upgrade worked for 2 months and stopped working. Submitted problem alert via website and email; Dishita does not even open problem emails or webpage problem feedback - they simply send the same form response to everything - all you get is some useless links and you are left feeling like it's your fault for not fixing Dishita's poor programming.
PRO Upgrade is therefore not worth the price - there is no support whatsoever for any problems.
Zero Stars.

One of the great gifts to the internet. Thank you! Appreciate your communication about the current status each update, and the behind the scenes challenges. Helps us appreciate your work all the more!

It stopped working and the developer moved to a desktop version. Someone reported that the developer is still taking money for the extension. Should be removed and NOT be a recommended Mozilla add-on. Was very good back when it worked.

The add-on is FREE to download, but as soon as you try to actually use it, it tells you you need to BUY the PRO VERSION!!!

I've been using this for years as a pro user! It is awesome. Come on guys it's only 30 once! There's no annual fee like so many programs nowadays!

Wants you to pay to actually use the addon now. Don't bother.

Works just about fine.

no veo nada youtube

Normal youtube download websites recently started only offering 360p versions of their videos with sound, or 1080p versions with no sound, so I looked up a better way to get full video + sound... and this is it! I tentatively upgraded to pro and it has worked perfectly. Thanks for dealing with Youtube's nonsense for us!
Update from a year after I started using it: still going strong! This extension is awesome!

Excellent performance. Doing great job.