This really fast object was filmed in the sky above Isla Cristina, a city and municipality located in the province of Huelva, Spain on 2nd July 2021.
Witness report (Google translate): I was in the living room managing the security camera with a Wi-Fi connection previously installed on the roof of the house. I turned on the infrared lamp from the laptop in the device software a few minutes later I saw an object passing by at high speed so I started recording the video. I was able to follow the trajectory of it by controlling the software.
Muito rápido.É UFO.