You can see in the video they are switching back and forth from infrared to regular visible light camera and not getting a visual image.
This thing was only “visible” in IR.
My first thought is an IR camera problem.
https://www.youtube.com/watch?v=X-Hh1XUBf_E
At 1:22 on the long youtube video it shows up as a tiny white spec on what I think is the visible range camera. And after it leaves the “cloud” that is obvious on the IR, there seems to be a similar narrow bright cloud in the visible spectrum - although hard to tell for sure with all of the other natural clouds.
My wife got me that poster “I Want to Believe” as a joke for Christmas. Yeah - I’m not a believer in alien ufo’s..... yet! (Top secret military, etc. - well sure!)
Little to no track crossing rate, visible in IR only. My guess from looking at the video is a twin engine jet heading away at a distance. The streak could be a number of things including a shot of afterburner.
My first thought was the flying Amazon warehouse I read about.