Originally Posted by neo1022
The great majority of blueray stuff is also 24fps and the bitrate is a lot higher than broadcast stuff. Nothing I've seen on broadcast has come close to the PQ of blueray/hd-dvd.
IMHO, you never will either.
The closest to that are the network HD feeds from ABC, CBS and The CW. They average around 35-40 Mbps. But even that will more than likely vanish when they upgrade their infrastructure to go 8PSK and put at least two HD streams per mux. The current QPSK mux transport rate is about 44.7 Mbps and they only do one HD stream per mux. Going 8PSK can get them to a transport stream of about 73 Mbps. But, they will stuff at least two streams per mux, or 36 Mbps per stream (total) instead of the current 44.7 Mbps. Then again, they could go 16QAM and get near 98.3 Mbps, plus use MPEG-4. Then they could send four HD streams to the affiliates. Sigh, all that great video quality, lost to the inferior ATSC standard with suits that have to add lots of streams to their DTV channel
Or in this case, cable companies cramming HD down a pipe that is too small.
It has been discussed in various threads that re-encoding of MPEG-2 to MPEG-2 wants to have a 2:1 ratio from source to destination, to reduce various types of re-encoding MPEG-2 artifacts. So, for 18 Mbps OTA MPEG-2 (ya right, as if anyone does that these days), that would mean 36 Mbps at the source and that source will no longer exist. But, because so many stations are also doing SD streams, where the HD gets limited to about 15 Mbps, the network feed will still work.
Notice that I didn't mention NBC, which is only providing about 22 Mbps for the HD video. Ouch.
Yep, Bluray (when MPEG-4 is used), will be hard to beat. Of course, there will be newer technology down the road that will make MPEG-4 look sic. Real 3D TV anyone? How about Holodecks where the program surrounds you, sight and sound!