0:00-0:01 looks like there is a contrail behind the object
That fact alone, eliminates the balloon idea I initially posted in the opinions section.
Are these different segments of saved videos stitched together?
It looks to be reflection of the sun on a bunch of satellites. But On closer inspection, you will notice the object comes to a stop. This is no satellite reflection. If it kept the same speed and direction, maybe. It's not doing that.