Even if we assume their tech is SO advanced that they can just 'beam things' across the universe at the speed of light, the point in time at which said theoretical 1M year old society achieved such interstellar travel has to happen simultaneously with our being here to see them flying around our skies. In a nearly 14,000,000,000 year time span that the universe has existed, their societies 'interstellar travel timeframe' has to intersect with ours. In fact, for the object in the video, it has to intersect with that ONE DAY!
I think when you include this rather critical time-based fact (NOT a calculation), it takes the already infinitesimal likelihood of such a society (possessing physics-defying technology that humans can't even imagine) existing at all (near enough to reach earth in a creatures lifespan, even at the speed of light), and diminishes the likelihood to be SO mathematically improbable that I conclude that it is, for all practical purposes, impossible.
To be fair though, I probably initially overstated the impossibility that SOME automated alien craft might have, or will, appear in our solar system at SOME point in the solar systems history, after travelling for millions even billions of years. It's just that it happening while we're around to see it is where I go 'no frigging way'.
Anyways, good talk, thank you 
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