No I wouldn't expect that. Assuming these things could be real (the only thing I could even imagine would be some form of a probe without live being on board) how many of them could be flying here? There are only a couple of thousands reported sightings a year - even if some of them would be real (which I don't believe) it's obvious to me that the chance that a real alien spaceship is captured on high-quality image/video is super small and this is not an argument for them not being real, there are much better and honest ways to disbelieve that (mainly knowing some physics and how big are the distances between star systems).