> I'm sure this could be the case but I'm not convinced that their license to the content would be so specific as to require the delivery of the content video/a

> I'm sure this could be the case but I'm not convinced that their license to the content would be so specific as to require the delivery of the content video/audio together, or must be played in the foreground. The license a creator gives to YouTube might not require that YouTube delivers audio and video together (it clearly doesn't for YouTube Red) but the license YouTube gives developers definitely does, as pointed out above. Plus, if the video isn't played in the foreground, people don't see ads and creators don't get paid. If there isn't an explicit agreement preventing it, it'd certainly cause conflict if YouTube were found to be allowing it. > Especially since it would require all of the content be relicensed every time they change their policies. They've done it in the past, when they introduced YouTube Red for example: https://www.digitalmusicnews.com/2015/01/23/youtube-removing-artist-refuses-license-subscription-service/ https://www.digitalmusicnews.com/2015/01/23/youtube-removing... > Sure, but you've just traded invasive technologies for invasive legal requirements. Legal requirements are soft and barely enforceable on end users. I'll take those over technological solutions.