write-ups-challenges-2021-2022/redlight_greenlight/SOLUTION.md

Difficulty

Hard. (?)

How To Solve

Extract all the frames from the video (e.g. using ffmpeg: ffmpeg -i RedLightGreenLight.mp4 frame%04d.jpg -hide_banner). Each "light" appears X frames, the number of frames form a decimal number. Convert the sequence of decimal numbers to ASCII to get the flag.

Flag

IGCTF{Y0uF1nishedG4me1}