Duration: 3:46

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11

Made in Godot!

Shader Code:

shader_type canvas_item;

uniform float below = 0.01;
uniform float Sign = -1.0;
uniform float above = 0.0;

void fragment() {
vec4 pixelColor = texture(TEXTURE,UV);
float a = above - Sign * pixelColor.r - below;
COLOR = vec4(pixelColor.rgb,a);
}

With help from MartinVDL of Processing Forum.

Main code:

extends Node

# Called when the node enters the scene tree for the first time.
func _ready():
get_tree().get_root().set_transparent_background(true)
OS.set_window_always_on_top(false)
OS.set_window_always_on_top(true)
$VideoPlayer.play()
$VideoPlayer/AnimationPlayer.play("play")

func _unhandled_input(event):
if event.is_action_pressed("ui_cancel"):
get_tree().quit()

Per pixel transparency set to allowed + enabled.

Credits:
Song by ZUN, of Touhou fame
AMV by Anira and crew on Nico Nico
Godot version by Kaizar Nike