[opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)
- From: Craig Birkmaier <brewmastercraig@xxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sat, 12 Nov 2016 08:46:17 -0500
On Nov 11, 2016, at 8:37 PM, Manfredi, Albert E
<albert.e.manfredi@xxxxxxxxxx> wrote:
Craig Birkmaier wrote:
I'm talking about creating high quality HDR/WCG images for ALL DISPLAYS.
But first, 4K is the new normal, exactly the same as HD became the new normal
starting 20 years ago.
Nope. It's the new target the CE industry is trying to establish for the
future. Only six million 4K sets have been sold through June if this year.
4K is not being driven by the consumer. It is being driven by improvements in
the manufacturing process and demand for higher resolution displays on
computers and mobile devices. Most consumers will never see the benefits of 4K
because of limited screen sizes...
At least for TV entertainment.
But growing use of big screen TVs for Internet applications DOES provide a
compelling case for more pixel density, not to mention HDR and WCG.
To put this another way, let's talk about sample density versus sample quality.
More sample density helps with the ability to display fine detail in video, if
that detail survives from capture, through processing and finally emission
compression. It is VERY USEFUL for non Nyquist limited applications where each
sample is addressed and filtering is not required as it is with video.
More sample quality allows for more information to be displayed by each
available sample - specifically improved dynamic range and a wider color gamut.
Now place two displays of the same size next to one another - let's say 50," as
the majority of TVs sold today are smaller than 50."
The display on the left is 4K WITHOUT HDR and Wide Color Gamut.
The display on the right is 720P WITH HDR and Wide Color Gamut.
The source is 4K, acquired and processed with HDR and WCG.
Which display will most consumers say has the best picture?
If you said the one on the right you win!
The additional image quality (12-16 bits per sample) from HDR and WCG is much
more visible than the improvement from extra 8 bit pixels.
Why go to 4K? Why not? Did you go to stores and see the prices? There isn't
much downside to 4K.
There isn't much upside either, unless you are buying a screen that is
approaching 100 inch.
What's worse is that most of these sets are already obsolete. Only the most
expensive top of the line Ultra HD sets offer some form of HDR; few if any
support either of the WCG standards.
This article does a good job of looking at the current landscape:
http://4k.com/high-dynamic-range-4k-tvs-everything-need-know-hdr-contrast-wide-color-gamut-tvs-content-offer/
The wider color gamut and the potential for HDR (for applications where it
can actually exist) are two reasons why it makes no sense to avoid 4K.
The reason all of this is happening with 4K sets is that the standards are
still in debate and these kinds of features are usually introduced on top of
the line videophile displays.
The CE industry is missing the boat by not focusing on HDR and WCG for less
expensive, smaller displays. As I keep trying to tell Bert, the benefits of HDR
and WCG are there for ANY display resolution. But first we need to get the
creative community and equipment manufacturers to embrace the higher sample
quality metric across all products - i.e. At least 12 bit samples.
That is why it is important that Apple is bringing this support to the creative
community across all of its product lines.
Even the size is no longer a constraint. Used to be only huge and expensive
sets were 4K. Now you can get 43" 4K TVs for prices much, much lower than
HDTVs of that size, just a few short years ago. So, if you're in the market
for a new TV, why not 4K?
Why. At 43" you are paying for more pixels you can't see at normal TV viewing
distances. Without HDR and WCG there is no noticeable improvement in picture
quality.
No, Craig, at least not HDR. Wide color gamut maybe. But we already covered
this point, and it is totally misleading.
Wrong. You are only talking about a technique used in iPhone cameras to acquire
higher dynamic range images. I am talking about displays that support both HDR
and WCG.
There are physical problems attempting to install HDR screens in smartphones,
which are likely to be viewed even in daylight or bright ambient lighting.
The problem is big power requirements, for creating the wide dynamic range.
The bright parts would have be really bright, in order for the dark parts of
scenes to remain visible in well-lit or daylight venues.
Yup. That's why display brightness keeps increasing. But the real transition
will occur thanks to OLED displays over the rest of this decade.
Same problem with HDR in portable devices.
Nope. The limits are in display technology, not the ability of these devices to
process 12 - 16 bit samples. With OLED you get improved dynamic range and color
gamut at lower power levels.
The major takeaway here is the same. HDR and WCG will improve delivered image
quality across ALL display resolutions.
Regards
Craig
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- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Manfredi, Albert E
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Manfredi, Albert E
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Manfredi, Albert E
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Manfredi, Albert E
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- cooleman
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- cooleman
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Manfredi, Albert E
- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
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- » [opendtv] Re: Google: Upload High Dynamic Range (HDR) videos (also streaming with Chromecast)- Craig Birkmaier
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