Quote:
Originally Posted by
Urga 
TCM HD fr. :
Mpeg4 , 1920x1080i 75Hz ,
16,4 Mbits/s , Pal RGB 16-235 ...

The two parameters in bold are probably the number one reason why HDTV programming in much of the world outside of North America and a few countries in the Far East looks so much better. Roughly speaking, MPEG4 is about twice as efficient as MPEG2, so to match the quality of the 16.4 Mbps MPEG4 stream in France, a North American MPEG2 stream would have to run around 33 Mbps. As far as I know, no pay providers in the United States offer
any programming to the end consumer at a bit rate even close to that level (the HD channels offered by my cable provider run around 11-14 Mbps MPEG2, although I've noticed a few sports channels averaging 17-19 Mbps), and our MPEG2 OTA system doesn't even allow for a bit rater higher than about 19 Mbps, with the majority of stations operating HD services around 12-15 Mbps MPEG2 since they have subchannels and/or mobile DTV services taking bits away from the HD stream.
Thanks to H.264/MPEG4, HDTV in other parts of the world, even when a lower average bit rate like 12 Mbps is used, can truly be a sight to behold and really put to shame the quality of HDTV broadcasts in North America. I suppose that's what we get, though, for being relatively early to adopt HDTV and HDTV standards rather than waiting a bit, like many other countries did, for a subsequent generation of standards to be developed before rolling out HDTV to the masses.