I was in the balcony of my sisters apartment just chilling. Suddenly I saw in the other side of the bay(she lives in front of the Guanabara bay and from her apartment in the 11th floor one can see the city of Niterói with some hills top in the other side of the bay)some lights comming from behind the hill top one after the other, it looked like bright silver stars, there was about 5 objects I Thought it was kind of fireworks but it did not made any noises. They did move and to go up and down and the lights start to twinkle vey fast, it was incredible and I had to call my mothr and my sister to see it. Then above the silvr lights it appeared 4 red lights one by one and above them another light like a big star. In the video your hear my voice speaking in portuguese with my mother. Then one light after the other vanished leaving only one light behind. Take attention to the last light that remains in the video, the light goes very quick to the left of the picture go back to the center and fades away in the back. To see this last moviment of the light you need to watch it several times. Then you see that it was a real UFO.