Someone has mentioned before that at 30fps there is no way the camera can read the data fast enough for such purposes.

Lets put it this way, 30fps = about 30Hz, 1Hz = 1 cycle per second so 30 frames would be thirty cycles per second.

Standard consumer IR devices however have modulation speeds of 35-38kilohertz, or about what, a thousand times faster than the camera is capable of seeing.