Hey @TeamYouTube why do you give me the option to download videos when infact i cant use it at all? I really want to use this feature but I can'tpic.twitter.com/Y2y4dAmfOK
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Okay, thank you for clearing it out 
NP ! :) And as TeamYouTube said it can be greyed out for some reasons (Bad connection, video can't be downloaded, ...) But yeah basically the feature need YouTube Premium (if you're into YouTube music that's really interesting imo)
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