In my experience the only downloader for youtube that works. Sometimes it's necessary to shut down firefox and launch it again. Took me some time to stumble upon that ...

Best add-on for downloading videos

Good interface. Easy to choose the desired format and file size. Great for archiving my desired videos.

no problems, always been good

I needed to download about 20 vimeo videos from the webpage and this add-on handled the task exceptionally well.

Does what it is supposed to do.

An absolute game-changer for me! It has evolved into, perhaps my most valuable addition to the Firefox world! I would miss it if it wasn't there. 5 stars plus!

best extension EVER !!

These people really make a difference. These people made a proper tool like the old-school-ones, so I salute to them. At the moment one of the best tools I have, to be plastic sometimes better then hammer or forceps.

Empfelenswert'''

Works very well if video quality can be set manually, some problems with automatic settings comes up with error message and doesn't record.