Strange UFO sighting captured on camera over Catania, Italy

These strange objects were filmed in Catania, Sicily, Italy. Two German tourists came from a party and went towards the beach. They saw these objects above the ocean and recorded them. Although the cassette of the camera was nearly full they could record 6 full minutes. Unfortunately the camera had a problem to focus on these objects. After the sighting the two people are convinced that these objects were not from our world. What do you think?