Does anybody know how to put in those moving pictures. Not the YouTube videos just those pictures that move and repeat its sequence. Cause I wanna put this specific thing (media) up for an upcoming chapter in one of my books. But can't figure out how to.

Hiro: Here lemme show you how to do it.
Me: Okay!
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-the next day-
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ENOUGH ALREADY!!!!

Seriously, I can't figure out how people do it!
So please, please, please! Won't someone tell me?