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https://en.wikipedia.org/wiki/Steganography https://en.wikipedia.org/wiki/Steganography

• Animats 10y ago
  Right. The article author seems to have re-invented steganography. The hard problem is finding a way to encode data in video in a way that will survive recompression, resizing, or other video processing. The watermarking people have struggled with this for years. There are various spread-spectrum like schemes with good noise immunity that can do this. YouTube has an ongoing battle between the copyright-infringement identification system and versions of audio and video modified to evade it.
  • visarga 10y ago
    Can't they simply use the least significant bit from each color channel to carry data? I think a single bit flip would change colors by a factor of 1/128, indetectable for the eye. Of course, use compression, encryption and redundancy too.
    • Animats 10y ago
      That won't survive video compression.