Maximum error correction and each QR Code "pixel" is 6x6, while each video pixel is 1x1. And, there is enough intentional "pixelation" to ensure enough codeword

Maximum error correction and each QR Code "pixel" is 6x6, while each video pixel is 1x1. And, there is enough intentional "pixelation" to ensure enough codewords read correctly. (Repeated for each frame.) http://en.wikipedia.org/wiki/File:QR_Ver3_Codeword_Ordering.svg http://en.wikipedia.org/wiki/File:QR_Ver3_Codeword_Ordering....