[opendtv] Re: Receiver costs too expensive in the Brazilian DTV system:
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sun, 9 Sep 2007 09:47:13 -0400
At 6:46 PM -0400 9/8/07, Albert Manfredi wrote:
I think you guys continue to overstate the H.264 "advantage...
Personally I think that the advantage is understated.
This is not rocket science. It is about throwing MIPs at a very
compute intensive application. AVC offers MANY new tools that can
improve compression efficiency, and the quality of the delivered
video. Many of these tools are just now being exploited.
Bert, perhaps better than anyone on this list, should understand the
relationship of Moore's Law to these big computing tasks. He is the
one who correctly predicted that the 8VSB equalizer problem would be
solved via ever more powerful chips.
MPEG-2 is now a mature algorithm. Virtually every possible bit has
been wrung out of it and now its all about making the chips cheaper,
and integrating MPEG-2 with other receiver functions. The same thing
is beginning to happen now with H.264.
Here is the most important bottom line:
ANY COUNTRY that has not launched a DTV service would be derelict in
their responsibilities to limit a DTV system to MPEG-2. By waiting,
these countries have gained the considerable advantage of being able
to implement all of the useful first generation DTV technologies -
any receiver that can handle H.264 can ALSO decode MPEG-2 without a
problem. It would be irresponsible NOT to implement H.264 when there
is no installed receiver base.
And if the country waits a bit longer - say 2015 - to launch their
service, we will be having a similar conversation about the maturity
of H.264 and the need to implement the next generation compression
algorithm.
Aparently Bert has learned NOTHING by observing the way the Internet
proliferates software based technologies. DTV should be no different.
Regards
Craig
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