Probably just rocks that no one had noticed before. I could look under my couch and find 500 dog hairs that I have never seen before, but that wouldn't mean that they had just sprung into existence or been flung out of a black hole, just that I hadn't looked there before. That video told be absolutely nothing about them at all, or was 17 minutes of waffling sciencey sounding nonsense and baseless conjecture.