[opendtv] Re: TVNZ to launch HD on Freeview DTT in 2008
- From: "Barry Wilkins" <barry.barrywilkins@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sun, 30 Sep 2007 09:25:38 +1300
What they actually mean is that it is uneconomic to use the satellite
channel bandwidth for HD when they can provide more channels of SD. They may
well include MPEG4 capability on DVB-S in the future but even then may not
utilize this for HD.
All DVB-T receivers will be required to be MPEG4 compliant.
On another topic I have learned from Kordia that they are probably not going
to utilize the L band here for T-DAB+ due to the rugged terrain. Looks like
band III only (Not confirmed). Also, contrary to comments from far flung
places, there apparently is no immediate plan of a roll out imminent. This
is even though they allocated the available space long ago for this purpose.
This surprises me. Why they could not have deduced earlier, from the
propagation characteristics, what the likely outcome for say Wellington (all
bush clad steep hills and dales) will be, is a mystery. Perhaps you could do
it with enough SFNs but it may be uneconomic.
Because I understand DAB+ compliant receivers must be band "agnostic",
perhaps here in Hawkes Bay (Heretaunga Plains) and other flat areas they
could utilize L Band transmitters. Christchurch, Palmerston North, Auckland
etc would probably operate well on L Band. This constitutes by far the
greater proportion of total NZ population so Kordia's comments still do not
appear to make a lot of sense.
Barry
On 9/30/07, John Shutt <shuttj@xxxxxxxxx> wrote:
>
> Freeview NZ DTT will use MPEG 4 within an MPEG 2 transport stream for all
> SD
> and HD programming.
>
> http://en.wikipedia.org/wiki/Freeview_(New_Zealand)
> "TVNZ said digital terrestrial will be broadcast in MPEG4 and satellite
> broadcasts will be in MPEG2. This means people who took part in the
> Auckland
> digital trial using terrestrial DVB-T MPEG2 receivers will need to change
> their receivers to DVB-T MPEG4 in order to receive terrestrial Freeview,
> once it is officially launched in March 2008."
>
> You are correct that the wording is misleading. What they are really
> saying
> is that the DVB-S receivers used to receive DTH Freeview NZ do not have HD
> decode capability built in, and apparently there are no plans to build new
> ones.
>
> John
>
> ----- Original Message -----
>
> > Canard alert:
> >
> >
> > "HD programming will not be available on Freeview's satellite platform
> > since it was launched using MPEG2 technology."
> >
> > I'm not sure if this sentence is intending to mean that MPEG-2 has
> > something
> > to do with rocket science, or if they are asserting that MPEG-2
> transport
> > streams can't handle HDTV.
> >
> > Either way, it's plainly wrong.
> >
> > John Willkie
>
>
>
>
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