I remember putting a feature request that Google append to the video description the original source. But then you devolve into the whole authenticity realm like with Twitter verified badges.
Maybe filter out all results posted by media orgs. Or show only those results that don't have cuts in them (almost all original footage is a continuous shot of a situation, with no titles, cuts to reporters or anchors, or introductions)
I think I'm headed down a rabbit trail of leveraging ContentID smarts for better searching and filtering.
Technical challenge is one thing, but getting people to choose some random search engine over Google is incredibly hard, as Google spends billions of dollars to divert all the traffic to themselves.