Assuming a frame rate of 60fps, and a video of one hour in length, each frame storing a new, unique QR code per frame (corner or side of the frame), how much data could be transmitted from those 216,000 QR codes? I'm sure something could make use of this...
From my rudimentary calculations, I reckon around 1-2Gb of data could be shoehorned in, aside from the video file size.