Quote pyramid....
Anywhoo.... the content is sent from a main server (usually some base PC in the shop) and outputted over vast length of cables and distributed to a number of tv's so the actual image has to be shared across multiple sets so the quality is deteriorated
If in doubt do what richersounds reccommend.... take in your own stuff to try with it, hook it up and see (or bring planet earth and set up up on a blu ray player)
The tv's arent properly calibrated but whack it on a movie mode as a rough idea to quality at the worst (as it could be better with proper calibration)
For the article.... they have probably been testign different p/i-frame strategies as well as a switch to a new form of h.264 as they were on h264 before
_________________TwitterCharlie Brooker:
Macs are glorified Fisher-Price activity centres for adults; computers for scaredy cats too nervous to learn how proper computers work; computers for people who earnestly believe in feng shui.