Notes from the original uploader, YouTube user “drrtysal13z”:
“My brother catches a glimpse of some lights in the sky that seem to be appearing and reappearing. UFO maybe? you decide.”
My first impression is that the lights are just flares. In my point of view, there is nothing that contradicts it; they light up and they fade, just as a flare would do.
In the comments to the video, they use the objects position to each other as a “proof”, that they are not flares, but what we don’t know, is their true distance to the cameraman, some objects may be closer, some farther away, and thus creating the illusion of being in a formation.