Thanks +Béatrice Karjalainen
That's what I was looking for last night. It's still not quite clear who owns the rights to the 'derived work' that Google creates using my IP though.
I have to give them the rights to "use, host, store, reproduce, modify, create derivative works (such as those resulting from translations, adaptations or other changes we make so that your content works better with our Services), communicate, publish, publicly perform, publicly display and distribute" all my stuff, but I don't quite understand what happens to the resulting derived work. I guess that according to a strict reading it's now 'theirs', to do what they want with.
The relevant question is probably "do they still believe in the old mantra 'don't be evil' ?"
The video in question was this:https://plus.google.com/106912036527856621878/posts/PWAyuWLbcy2
True, there's music added, but at least the score (if not the performance) should be in the public domain by now... (I don't know much about music, but isn't that 'the ride of the Valkyries', by Wagner? And he's been dead for over a century. )