Teaser

Challenge

In order to sweeten the waiting time, we are providing a teaser challenge in advance.
Download the video file, and find the teaser Easter egg.

Solution

The video seems to flash different colours. We use ffmpeg to find the number of frames:

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$ ffprobe -v warning -show_frames he2019_teaser.mp4 | grep -c '\[/FRAME\]'
230400

so we find that it has 230400 frames, which all appear to be a single colour (mostly black and white, some purple).
230400 is exactly 480x480, so maybe each frame is a pixel and we need to convert this to an image, hopefully a QR code
let’s try it:

import moviepy.editor as mpe
from PIL import Image

# load video
video = mpe.VideoFileClip('he2019_teaser.mp4')


outimg = Image.new( 'RGB', (480,480), "white")
pixels_out = outimg.load()

framenum = 0
for frame in video.iter_frames():

    # set pixel to colour of video frame
    pixels_out[framenum%480,framenum/480] = (frame[0][0][0],frame[0][0][1],frame[0][0][2])
    framenum += 1

# save image
outimg.save("teaser_out.png","png")

which gives us the following image:

Egg

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he19-th1s-isju-5tAt-Eazr

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