Are you looking to write a of how these videos are made, or do you want a more narrative-style creepypasta post?
: Why the familiar setting of a house feels so much more terrifying when viewed through a "corrupted" MP4 file.
In most iterations, "Ana(2).mp4" follows the or Found Footage trope.
: Heavy use of distorted audio, high-pitched frequencies, or "EAS" (Emergency Alert System) tones to create a sense of dread.
: Many creators use the clip as a "jumpscare" or as part of a "disturbing videos explained" series.