[opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Sun, 2 Jul 2017 06:11:50 +0000
Donald Cooleman wrote:
Dive into the archives TV Mark (Schubin) posted about this in the SD
vs. HD days.
Granted, but everything has to be put in its proper perspective. Large screens
of the future are likely to be just as significantly different from those of
today, as those of today are from 20 years ago. One example would be floor to
ceiling display, but another one is the tabletop displays (the tabletop *is*
the display) that we already see in TV shows like NCIS. So it's a totally
different ballgame. Visual acuity has to be taken into account. Rule of thumb,
~1 arcmin of angular separation starts to become noticeable, for humans with
20/20 vision (or less than great vision, but wearing appropriate spectacles).
So, exactly like 20 years ago, we're talking about all types of displays that
have to render the image. Some do fine with SD, others don't. In a broadcast
medium, it's wasteful to simulcast for all types of displays, while if over the
Internet, you can optimize better, for the transmission aspect anyway.
Secondly Siebert is taking about all broadcasters, whereas Hayes seems
to speak for his constituency of US Big Stick owners.
I think the point is more like, for the next 20 years, what image standards
will make sense to have ready to go for consumer displays? The answers to such
questions always depend on one's assumptions. Obviously, if we assume that
screens will remain in the max ~60" range, 1080p is fine.
Somewhat related, remember when Craig thought that 4:3 displays would always be
popular, just because they were then? At the time I said no, probably not,
because LCDs do not have the restrictions of evacuated glass bottles. There's
no reason to assume squarish needs to survive. Of course he argued and argued
and argued, but the facts speak for themselves. The same applies to size.
Restrictions of today won't last forever.
So, even with DVB-T2 one can't do much in 3 multiplexes (once there was
the promise of 6 following analog switch off).
That 6 was always dubious. In spite of all the hype, which was always hard to
believe, it makes sense that H.264 gains **most** over H.262 in restricted
channels (as was always intended). If you want HD quality, it's not likely that
you get anything like a *persistent* 2x improvement, H.264 over H.262. So, in
an 8 MHz Euro TV channel, say about 24 Mb/s, whether you use H.262 or H.264,
roughly 8 MHz average per channel, for 3 HD channels, sounds eminently
sensible. But of course, with H.264 you can also fit fast action in that 8 Mb/s
average, or 4 streams, reasonably well, especially because H.264 masks blocking
artifacts (H.262 does not).
Digitimes reported that LG was launching 82" OLEDs in Taiwan, but no
confirmation anywhere, no response from LGE. So for now LGD is sticking
to its 77" limit, though it can do larger, if there really is a client
(that is willing to pay for increased cost due to lower yield, I guess).
Yes, and in the late 1990s, Craig was arguing that HDTVs cost in the 10s of
thousands of dollars, and were out of reach of the common mortal. But even back
then, the point was, spectrum-compatible HDTV (i.e. digital HDTV) was being
designed FOR the common mortal. Not as a premium service. Now we have 4K sets
already, available to the common mortal, **even before** their size warrants
the pixel count! (Another point that took forever to get across.) The prices
are totally competitive already. Affordable, bigger sizes, are the next step.
Bert
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Other related posts:
- » [opendtv] TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- John Shutt
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense? - Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Mark Schubin
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Mark Schubin
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Mark Schubin
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Mike Tsinberg
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Craig Birkmaier
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- cooleman
- » [opendtv] Re: TV Technology: 4K for Broadcast: Is it Worth the Expense?- Manfredi, Albert E