not only is your film so shaky that i started to feel sick, but it sure does cut in and out alot and starts at different points. why couldn't you just focus unmoving at it and keep it on the object? this leads me to believe it isn't a ufo at all. it looks just like that advertising balloon in another video here.
Nothing more annoying than a shaky video, why can't people remember the first rule of shooting video, hold the camera steady, or if you can't brace it against something. This thing could obviously just be a balloon.