The answer to the Webdriver Torso mystery? - Newsnight

Last September a mysterious french youtuber began uploading 11 second videos of uniquely shaped red and blue blocks, each one lasting just one second, each one with a different accompanying computer tone. 80,000 videos later, the uploading just stopped. It's all led to some pretty wild speculation - is it a spy code? A video test signal? A message for aliens? Conspiracy theorists can now sleep easy - we think we may have an answer for them. See if you can spot it.
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