Ambient music
I don't think any technological solution helps, unless we get a strong AI that totally understands the context. For instance, suppose I shoot a bit of video in a party with some popular hit playing loudly in the background, so that almost nothing else can be heard in the soundtrack. A filter would block it, as the soundtrack would be exactly equivalent to a piece of copyrighted content, but this would be fair use. I did not put the music there, it was part of the natural background. I guess the clip could not be shared unless I removed the sound.
Biting the hand that feeds IT
