The official description
The video contains 2 minutes and 57 seconds of footage likely captured by an infrared sensor aboard a U.S. military platform in 1996. Video Description: No formal data handling practices for UAP-related records existed at the time this media was reported to the UAPTF. This media was digitally altered before being reported to the UAPTF, and is presented as it was received by AARO. 00:01-00:13: No content. 00:14-00:17: An area of contrast transits the sensor field-of-view, entering near the upper right corner and exiting near the lower left corner of the frame. 00:18-01:21: The footage repeats frame-by-frame. 01:22-02:13: The footage repeats at a slower playback speed.
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.