Hackvent_2023/Day 05/decode.py

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2023-12-18 16:02:49 +01:00
from PIL import Image
import os
import sys
import operator
import subprocess
import shutil
def extract_frames(destination):
os.makedirs(destination, exist_ok=True)
subprocess.run(["ffmpeg", "-i", "aurora.mp4", "frames/out-%03d.png"])
print()
def parse_frame(file):
img = Image.open(file)
pix = img.load()
return img.size, pix
if __name__ == "__main__":
output_directory = "frames"
pixel_sum = None
count = 0
extract_frames(output_directory)
for file in sorted(os.listdir(output_directory)):
if file.endswith(".png"):
sys.stdout.write(f"\rAnalyzing: {file}")
(width, height), pix = parse_frame(os.path.join(output_directory, file))
if pixel_sum is None:
pixel_sum = [[(0,0,0) for y in range(height)] for x in range(width)]
for x in range(width):
for y in range(height):
pixel_sum[x][y] = tuple(map(operator.add, pixel_sum[x][y], pix[x,y]))
count += 1
print("\nComposing new image")
img = Image.new("RGB", (width, height))
pix = img.load()
for x in range(width):
for y in range(height):
pix[x,y] = tuple(map(operator.floordiv, pixel_sum[x][y], [count] * 3))
img.save(f"result.png")
shutil.rmtree(output_directory)