The official description
AARO assesses that this video, whose uploader-defined title is, “18 Oct 2020 [CALLSIGN] observes UAP,” is likely derived from an infrared sensor aboard a U.S. military platform operating within the United States Africa Command area of responsibility in 2020. Video Duration: 00:04:59 Video Description: 00:00-00:57: No content. 00:58-01:03: An area of contrast transits the sensor field-of-view, entering from near the top left corner of the screen and exiting near the bottom right corner of the screen. 01:04-04:59: No content.
Quoted from the U.S. Department of War, PURSUE UAP releases. Read every file for this incident in Official files or at war.gov/UFO.