Hi, yes it looks just like the Racetrack UAP / Starlink flares that pilots have been seeing for the last few years. If you're able to share your flight number (or rough location) and the original video file (or exact time of the video) we can probably recreate the exact patterns of the lights in the Sitrec software.
Edit - i think this is synced with the video: (now with the camera on EI-GJT it syncs perfectly, even with the visible strobe of EC-ONR passing at 20:47:17hrs.