Tested on 02/05/2021.
No download button on youtube.com!! So I can only assume that this FF addon is another scam to get your browser data!!

Contains adware

Since there aren't any links to contact the developer anymore, I guess I'll ask here. Will you please explain the purposes of the particular permissions this addon requires? Why do you need to access my data for all websites? Etc.

Doesn't see any videos on Youtube and Facebook

This extension ("Flash and Video Download") injects smartredirect links into regular browsing processes that have nothing to do with the supposed functionality of the extension, so instead of directly going to another page or site, it loads a smartdirect catcher link in-between.
This behaviour should be banned.

If I could give this zero stars I would. This extension DOES NOT work at all, I've tried everything and it STILL remains gray. Don't bother downloading this

Does not work for Facebook or Youtube videos, even though it claims to. If it only works for Flash videos, then the description should be clarified

Installed this and it did not work at all. Icon stays grey. No matter how many different sites I try to use it doesn't recognize any videos. Don't waste your time installing. Does anyone have a link for a Firefox video downloader? I thought this was supposed to be the best browser. Now why does it seem like we are turning into Safari?

Doesn't work anymore. I've tried Youtube and several other sites.

Doesn't work anymore. Running newest Firefox, Windows 7

Firefox 82.0.3 (64-bit) Download of flash nor video did not work for me/ He did not recognize the media.

Ribbish

Doesn't detect a thing.

Doesn't work for YouTube.

It's not working on YouTube. Again...

not working