Very Strange
Don't think it's CGI and the lady taking the footage sounds genuine enough (and a little bemused).
Any ideas?
It doesn't look like a plane,a kite,a bird,a Chinese lantern,a Lenticular cloud,a Sodium flare or a Mylar balloon filled with swamp gas.
It also could be a remote controlled vehicle. There were some that appeared a while back, and the object in the video does resemble such a vehicle. It
also is doing the same types of maneuvers.