This is a letter… and pph.

A Minecraft character with brown hair and a black and white outfit stands in front of a building, then turns to face the camera as the scene cuts to a close-up of their face, which is illuminated by a glowing light source, followed by a cut to a white, glowing, blocky head, then a cut back to the character's face with a simple line drawing of a face superimposed over it, and finally a cut to the character standing with two other characters in a dimly lit indoor space with stone pillars and a tiled floor.