This version (0.9) stops working, if I move its icon from the toolbar to the overflow menu. Tested with Firefox 72.0.1 x64 with different profiles on Windows and Linux.
Except this, it is working perfectly.

everything works just fine, best YT downloader I've tried so far

Sorry, but not very useful as it only presents a limited range of resolutions that are video & audio and theyre all either too low (360p) or too igh (720p+). Im used to being able to get 480p (perfect for me on limited data and mobile) which i usualyl get via IDM...currently im in Linux and if course no easy IDM downloads, so trying all Add Ons for youtube. And so far, all are so limited....this one is just weird, theres 1 page with limited video&ausio options and 2 pages of audio or video only options...bonkers....

Excellent extension. Does what was promised. Probably the best. YT or FF makes changes, but the Feller makes it work again and constantly improves it.

It demonstrated high efficience, however it is now requesting change of format. I wonder why.

so so so excellent!!

excelente! cumple a cabalidad lo indicado, puede ser de forma muy sencilla con solo un click para la descarga o bien con opciones adicionales para ajustar a lo que se requiera. recomendada 100%

This has been my fav video downloader so far but something broke it, the error message is something like:

Cannot detect url encoded fmt stream map

THE BEST ON THE WEB ENJOY!!!

Werkt perfect en makkelijk.

Exactly as anticipated. You can click to download files you need. It is easily editable and having downloaded both audio and video files separately, you can combine the highest quality of each.