When the reporter blinks, face rec fails entirely bc it can't find their pupils/eyes. This is why 2 frames per second performed so much more reliably than 1. The 5 or 6 second moving average scores were devastated by blinking when only 1 frame per second was considered. Less so with 2 frames per second.
The article says that processing of the MPEG2 (?) feed couldn't be done on an Atom processor but I wonder if hardware decoding would have helped here.