I love reading the comments on places like r/UFOs and seeing the justifications people make for why an object does something in these videos. Like one video is an IR tracker recording some sort of point source of IR (plane, missile, reflective weather balloon) and it just quickly fades away. The background of the video is just a pale grey with no obvious textures. To a rational person, it could that the object flew into water or clouds and the camera is too far to resolve any textures. All of the telemetry is blacked out so you have no frame of reference. But of course these guys, it's obvious that this is an interdimensional object simply moving between dimensions. It's crazy how wrapped up these people are in pseudoscience and magic that they can't apply any rational thought. The further comments simply latch onto the interdimensional being theory.

Meanwhile people in the know laughing their ass off.

skeptics guide does a good run through of basic evaluations: https://www.theskepticsguide.org/podcasts/episode-1088

One of them is essentially: you're watching an object doing normal things while a zoomed in lense tries to track it and without proper foreground/background information, it looks like the objects moving when in reality it's just the poor camera tracking.

tl;dr: weather balloons and poor camera tracking