Comment of the add-on, when it should work:
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.
Kicked off.

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НА ПОЛНОМ АВТОМАТЕ!!!

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Small price to pay for the Pro version - the convenience of downloading videos in 1080 HD clarity is a MUST. Also compresses the video which is fantastic work!

super easy to use, best extension for YT download vids I've downloaded so far, thank you for this!

Payware. EXPENSIVE payware. Does not allow free downloads anymore (and MUST say so in product description). Until they fix that, one star.

Doesn't actually allow you to download, ...anything. Used to work great. Now they require you to pay to play.

I used the free version first to make sure it worked, then quickly made a reasonable donation to get the pro version. After upgrading I had a small issue that I contacted the developer about and he had it fixed the very next day and I was able to download HUGE 1080p files with zero issues. 5 stars all the way - functionality and support. I see a fair amount of poor reviews from people who couldn't find their zipper when they need to pee. Take them for what they are.

I don't understand bad reviews here. I also tried few free youtube downloaders full of adverts, but this one is really working. I prefer high quality videos and one-time fee to be able to download the 720p and 1080p videos is not that much.

Piece of crap software doesn't want to download anything without a paid upgrade

First Class all the way.

Yes it's a paid extension, but I think we're at an age where we all know that the good work is never just free. The dev here puts in effort to keep up with Youtube format changes and has a very reasonable donation pricing model. The dev also responded to my support request relatively quick.

5 stars cos it's totally worth being able to save 1080P MP4 video or 256kb MP3 music from any videos. Support this dev!

Complemento de pago. No cumple con lo que ofrece a menos que desembolses dinero por algo que no sabemos si va a funcionar o la calidad del mismo.

I am very satisfied with this extension. It's really all I want and need when working with YouTube videos. BTW: There is a very fast support, too.

Had no problem using the free version, upgraded for the 1080P & Mp3 ability, small price for what you get 24/7. updates are regular and any glitches acted upon. Responds fast to any support requests. I've made a few small donations in appreciation of the effort and resources required, I wish those bemoaning paying would step back and appreciate the not-for-profit efforts of Dishita. Good Job Man..... Update July 2020, fast response to my reactivation problem, had me up and running in no time... another well earned donation on its way....