I just downloaded and installed this addon. On YouTube button appears. When I clicked on it, a message appeared - "Downloading as 1080 is not possible." In this message, there is a link to such rules on YouTube.
In short, this is a useless addon.
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Я только что скачал и установил этот аддон. На Ютуб появляется кнопка. Когда я нажал на нее, появилось сообщение - "Скачивание в качестве 1080 не возможно". В этом сообщении, идет ссылка на такие правила на Ютуб.
Короче, это бесполезный аддон.

Only Pro users can do anything. Don't use this if you don't intend on paying.

Não salva em mp3, em nenhuma forma precisa ser PRO. Não baixem. Deveria pelo menso uma opção free

not free. they want you to buy the pro version to get full functionality of it.

Говнище. Не работает
Спустя два года по-прежнему не работает. Говнище.
ClipGrab рулит

Aplicativo demonstra ser de uso publico, mas é pago

very poor extension. Don't install

Need update...no work 720p videos

This Extension has never worked for me, and now he has another version he says will work. Do I need to uninstall the old version before I install the 15.7, or can I just install it?

Good for low-definition but when I tried to download a 1280p gave me this SOB story in a massive pop-up:

Youtube switched to separate audio/video streaming technology for higher quality formats and no longer provides direct 720p (Since 24 September 2018)/1080p/mp3 streams. Converting these streams to downloadable formats for you needs powerful server infrastructure, therefore 1080p/mp3 downloading has been limited to PRO users. Read more at - https://videodroid.org/pro_upgrade.html. FREE users can download all formats in CACHE where some PRO users fetched the video/audio in past 24 hours, to test the feature you can try downloading popular videos.

So, yeah, I simply tried a different Youtube downloader Add-On and 1280p was no problem for it at all - no SOB story or asking for money, just quick 1280p download.

Dishita, you have been uninstalled.

ничего не качает, только предлагает купить прем

Getting a zero (0) size file download. Broken for quite a while now, with others having same issue. Have emailed support and checked website, but no mention of a fix in-progress. Shame, because when it works, it's does what it says. Often breaking, though - which may or may not be creator's fault.

MP4 360p und MP4 720p:
Button text "pls. wait, this can take time..."
Download attempts lead to a file with size 0.

MP4 1080p (Full-HD):
Works, but sometimes with and sometimes without youtube file names.

On the so called support page it says:
"UPDATE 01-JULY-2019 : A fix v 15.3 for downloads stuck at "Pls. Wait" message is now fixed and pending mozilla's review and approval, this is expected to take upto 48 hours. You can check for latest v 15.3 here - https://addons.mozilla.org/en-US/addon/easy-youtube-video-download/ ".
The update is still not available today (11-July-2019).