[opendtv] Re: Apple TV 4K brings home the magic of cinema with 4K and HDR
- From: Craig Birkmaier <brewmastercraig@xxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 14 Sep 2017 08:38:47 -0400
On Sep 13, 2017, at 8:25 PM, Manfredi, Albert E
<albert.e.manfredi@xxxxxxxxxx> wrote:
Craig Birkmaier wrote:
What I like is High Dynamic Range and Extended Color Gamut, which
will improve the delivered quality at ALL resolutions. I have no
reason to invest in 4k now,
Point being, Apple decided that you'd get HDR and the wide color gamut along
with 4K, just like everyone else decided previously. So now, you are allowed
to stop complaining about 4K not being "necessary." Apple said it is,
apparently.
Everyone is phasing out 2K TVs, Craig. His was some sort of problem for you,
but it is happening.
Nobody is phasing out 2K TVs Bert. They will continue to be offered for years
to come based on extending the life of existing fabs and the need for
affordable displays in developing economies. You re making a huge mistake if
you try to characterize the TV industry based on trends in the most developed
economy in the world, where there is a large high end product segment.
And you have completely mischaracterized my position on 4K displays.
I have no problem with increasing display resolution; I have explained this
many times as the resolution of small screens- phones and tablets, has
increased to HD resolution and beyond. This increase has almost NOTHING to do
with video Bert; it is driven by other forms of content - like text and Apps -
that do not have to comply with the limitations of filtering to deliver smooth
motion and to eliminate motion aliasing. In a word, it is all about:
OVERSAMPLING
That being said, almost ALL of the 4K TVs being sold today fall far short of
the performance required to justify the investment. They are simply following
the Moore's Law curve that allows for more pixels. There have been some
improvements in dynamic range and color gamut on LCD panels, but they fall far
short in terms of delivering on HDR, and most of the cheap 4K TVs do not
provide either HDR or WCG.
If you want a good TV to surf the web on with the PC you use to provide content
to your TV, then 4K makes sense (if your graphics card can output 4K). In terms
of delivered video quality, you will not see any significant difference from a
2K TV.
Apple barely mentioned the 4K aspect of the new Apple TV - they focused the
presentation on HDR and Wide Color Gamut. This is consistent with their overall
display strategy, which already provides support for WCG on many products -
like this iPAD. To deliver on HDR the display industry must migrate to OLED or
DLP and other forms of projection.
By the way, the OLED based iPhone X also offers support for DolbyVision and
HDR10, and has a 1,000,000:1 contrast ratio, which means it can actually
deliver HDR under the right lighting conditions. But the X does not have 4K
resolution; it has 2436 x 1125 pixels. The cameras support both HDR and WCG for
still images - it is not yet clear whether it also supports HDR and WCG for
video at any of the supported capture resolutions:
Video Recording
4K video recording at 24 fps, 30 fps, or 60 fps
1080p HD video recording at 30 fps or 60 fps
720p HD video recording at 30 fps
Slo‑mo video support for 1080p at 120 fps or 240 fps
Time‑lapse video with stabilization
Video formats recorded: HEVC and H.264
Once again, Apple focuses on the technologies that are defining the future, not
inflated product specs. Did you notice the support for HVEC Bert?
Regards
Craig
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