Terrific Add-on, non-intrusive but very easy to find and use. Looking into upgrading to PRO version.
Updated Review: Just did the latest update to this Add-on and the video does not download, it is only a 0bit maker file with no content. No chance at the PRO version now.

This plug-in used to be great. Recently, however, it breaks on a weekly basis. There are much better youtube downloaders that never break: video download helper and youtube download button being the two best.

When this one works, it's awesome. The problem is it rarely works.

It's not working. Annoyingly boring, f*ck!

Most videos require the pro paid version. I guess the developer, for his/her work should profit, but seeing as most plugins are free and they are not upfront about paying for the pro version to download, I gave it a one star.

On some Youtube videos it says, it cannot work and prompts you to join paid premium service

It doesn't work at all

I had paid 30 dollars
It was worked at beginning,
It worked well for short time then it failed to download
我付了30美元，起初可以用， 好用的时间很短，后来就不能下载

Can't mention anything positive bc I find it confusing to get activated. Wanted to mention I spoke w/ the company about a refund. It is taking a while to get refunded...but most importantly I did not receive the software download info. I found another alternative that worked perfectly and FREE.

shit do not work

O arquivo baixado vem com 0B

Download of any quality/type results in 0 byte files. Title only, no media.

Extension no longer works, they are asking to upgrade to "pro" by paying $10 for it to work.

Use to work and loved it when it did but now I get a message "Pls Wait, this might take a while" and never even start the download. I donated the requested $10 so I'm very disappointed. Cannot find any help on the web. Update: Added Incognito to try to troubleshoot this issue and add-on now works even for MP4 but the web page still shows the "Pls Wait" message on the button. Hope this helps

This no longer works. It has worked in the past. I now only get 0 byte downloads and no video gets downloaded and of course cannot be played. No response when I asked for help or if there is anything I needed to do to make this work.

You have to pay for an upgrade to download audio. Absolute rubbish.