[opendtv] Re: Spectrum is too valuable

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
  • Date: Sat, 14 Nov 2015 02:58:00 +0000

Craig Birkmaier wrote:

I read the numbers, said that they were on the low side, and
pointed out that they did not mention frame rates.

You said no such thing, Craig. Look it up and quote where you think you said
that. The post is dated 10 Nov 2015 08:53. You simply said:

Here is a chart from a company that does high quality h.264
encoding for OTT streaming:

http://www.lighterra.com/papers/videoencodingh264/

The exact bitrates chosen are...

And you copied a long list. That's it. You got lost in the long series of
mostly irrelevant numbers, is the problem.

The reality, as the slides Ron linked to is that DOCSIS 3.1
will be phased in, just as the other DOCSIS Standards have
been. And I pointed out that there is a big difference
between theoretical and reality.

Craig trying to weasel out again. This was how the conversation actually went:

And this is also important. If you read the DOCSIS 3.1
standard, you will note that the **only** way DOCSIS 3.1
can manage ~10 Gb/s per PON is by doing assuming these two
points:

1. That there are no MPEG-2 TS broadcast streams on that
PON. All dedicated to broadband service, like I said.

That is clearly not true. You can dedicate a portion of the
1 GHz available in the most up to date 1 GHz HFC systems;
you do not need the entire GHz.

And continuing,

2. That the usable spectrum is just about doubled, from
~900 MHz to ~1800 MHz.

Can you point me to a 1.8 GHz HFC system Bert?

So once again, Craig tries to wing it, fails, and then tries to weasel out. To
achieve the 10 Gb/s PON, those points 1 and 2 must apply, as the standard
indicates. There is no arguing that, Craig. You might have argued that going to
1.8 GHz would perhaps require new cabling in some cases, but that would have
been a pure guess.

Yes there is [a gatekeeper]. The gatekeeper is the MVPD net.
Only the MVPD can allow content to the headend.

What MVPD net?

The MVPD network, Craig. The passive, previously all-coax, now HFC plant's head
end, or the DBS broadcast. Only the MVPD decides what goes into those nets,
Craig. Do you understand how this stuff even works?

CBS All Access is all their stuff.

First, CBS does not own everything that is carried on the
broadcast network.

I'll repeat: CBS All Access is all their stuff. All CBS-owned original content.
Unlike, for instance, Netflix.

It is not possible to stream programs from a service that
did not exist in 2005.

When did the congloms start streaming, Craig? Are you claiming that they didn't
start until 2010? Prove it!

Hardware can be extensible in any number of ways. Your
old PC was too slow to handle h.264, but it could easily
have been upgraded with a new graphics board with h.264
acceleration.

Even that's BS. As backplane designs are updated, you simply will not find new
cards that use the older standards, before too long. Graphics cards now use PCI
Express, not the older PCI. So the same thing applies, Craig. Also applies to
RAM. You can't update that either, as standards change. ATSC is a perfectly
upgradeable standard. Doesn't mean ATSC TVs would be, necessarily. Just as PCs
are not.

Bert



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