Screenshot Comparisons 4K

[Geoff D]

I wouldn't say that 1080p HD Blu-ray does a bad job with grain though, it depends on who's doing the encoding...

[dvdmike]

There is nothing wrong with a new, well encoded 2k scan has Arrow have shown

[LuminousMotion]

What gets interesting, too, is when you do get to super-high-res scans of film, say at 8K resolution, where individual grains start to get resolved - you might not need as high of colour-depth to accurately represent them; actually are able to get away with much higher compression. Long ways away from worrying about that.

Chappie looks more solid at 4K, with more finely resolved detail, but I take it that is from a recent digital source?

[dvdmike]

Originally Posted by LuminousMotion

What gets interesting, too, is when you do get to super-high-res scans of film, say at 8K resolution, where individual grains start to get resolved - you might not need as high of colour-depth to accurately represent them; actually are able to get away with much higher compression. Long ways away from worrying about that.

Chappie looks more solid at 4K, with more finely resolved detail, but I take it that is from a recent digital source?

It was native 4k from the start filmed digitally

[infiniteCR]

Originally Posted by James Freeman

Computer generated animation movies will be the first to show the potential of the new format with proper adaptation and utilization of the new UHD features to film quickly to follow.

Hey now, that sounds awfully familiar I got this strange feeling I have bought a lot of cartoons in the past due to this phenomenon you mention.


So when are they going to make the auto-matic-processor that takes normal films and spits out HDR from it Lots o money to be saved that way.

[Coenskubrick]

All of those examples except Chappie look better on blu-ray (or very close). I think it's the compression. There is a tiny bit more sharpness on the UHD downloads, but there is all this ugly artefacting.

[pawel86ck]

Guys, it's only a game (unreal engine 4) screenshot, but even on my old AS-IPS PC monitor I can clrealy see these differences. BT2020 on the right looks much better and I hope to see similar differences in movies

http://postimg.org/image/yd4jw0mbv/full/

[MisterXDTV]

Reading impressions around the net is hilarious: some users are changing settings on their TV and Player on a single disc basis because HDR makes it impossible to find a correct calibration for all UHD discs...

That's the definition of revisionism: every studio takes the original movie and re-grades it for HDR as they like... But there's no standard and no rule to follow, just a big mess!

[LuminousMotion]

Originally Posted by pawel86ck

Guys, it's only a game (unreal engine 4) screenshot, but even on my old AS-IPS PC monitor I can clrealy see these differences. BT2020 on the right looks much better and I hope to see similar differences in movies

http://postimg.org/image/yd4jw0mbv/full/

Interesting. Thanks for this. The overall impression I get of the image on the right is of a smoother , more gradual roll-off into the brightest and darkest areas of the image, with a bit more detail in those shgadows (even be it being displayed on my screen/imaging pipe-line, which is limited in spectrum to the type on the left.and is obviously crushing the image down to its'characteristics ) less punchy in transition. Reminds me more of film... This might give the impression that there is more haze or that the image isn't as sharp, at first glance, when in fact there is just as much detail and the colour resolution is definately higher.

[imhh1]

Originally Posted by pawel86ck

When it comes to groundhog day comparison, for me clarity is way better even at first glance on this 4K screenshot, but I also have this impression, that 2160p WebDl screenshot have way too many artifacts (low bitrate maybe?)

BTW guys, that particular screenshot it's from exodus UHD review, and maybe someone could post Exodus Bluray 1920x1080 screenshot with the same scene?
https://www.blu-ray.com/movies/scree...678&position=5

Complete name : F:\Movie\Chappie.2015.2160p.WEB-DL.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 48.4 GiB
Duration : 2h 0mn
Overall bit rate : 57.6 Mbps
Movie name : Chappie 2015
Encoded date : UTC 2016-01-06 17:52:47
Writing application : mkvmerge v8.7.0 ('All of the above') 64bit
Writing library : libebml v1.3.3 + libmatroska v1.4.4

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2h 0mn
Bit rate : 54.6 Mbps
Width : 3 840 pixels
Height : 1 602 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.370
Stream size : 46.0 GiB (95%)
Title : Chappie (2015) - Release for ULTRAHDCLUB
Writing library : x265 1.7+474-e1adac00dce8e564:[Windows][GCC 5.2.0][64 bit] 10bit: KG7x [x265.ru]
Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=40 / rc-lookahead=20 / lookahead-slices=0 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=0 / weightp / no-weightb / aq-mode=1 / qg-size=16 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=0.70 / rdoq-level=1 / psy-rdoq=5.00 / signhide / deblock=-2:-2 / no-sao / no-sao-non-deblock / b-pyramid / cutree / rc=crf / crf=17.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30
Language : English
Default : Yes
Forced : No

[Jason One]

Originally Posted by MisterXDTV

Reading impressions around the net is hilarious: some users are changing settings on their TV and Player on a single disc basis because HDR makes it impossible to find a correct calibration for all UHD discs...

That's the definition of revisionism: every studio takes the original movie and re-grades it for HDR as they like... But there's no standard and no rule to follow, just a big mess!

That's exactly what I was wondering today. We consumers don't have any calibration guidelines, but can we even be sure that the studios do? Are they doing these HDR regrades according to any reference standard? Are the professional HDR monitors at different studios anywhere near as standardized as SDR ones?

Maybe we will look back on these early HDR titles as flawed, inconsistent first attempts.

[dvdmike]

Originally Posted by Jason One

That's exactly what I was wondering today. We consumers don't have any calibration guidelines, but can we even be sure that the studios do? Are they doing these HDR regrades according to any reference standard? Are the professional HDR monitors at different studios anywhere near as standardized as SDR ones?

Maybe we will look back on these early HDR titles as flawed, inconsistent first attempts.

Due to the different HDR formats and the different levels that the TVs support them calibration is near impossible to reach a universal standard

[PRO-630HD]

When will we actually get these? I am amazed they haven't shown up by now. Reviews are a very subjective way of buying into someone's opinion. I want an objective way of deciding is the difference in PQ worth the upgrade. Bottom line is a picture is worth a 1,000 words and I have yet to see a screen cap that wasn't extremely representative of the bluray and I own close to 1,500. IMO screencaps are the single best determining factor on the transfer next to owning the film.


When also are we going to get a computer that can read these discs and let us know how much data is being used by these discs and what the bit rates are? Stories from 3 years ago talked about 300gb discs for UHD bluray and they couldn't even add in the 128gb quad layer discs introduced in 2010 as the new format is more or less an extension of the BDXL format. I love how they advertise 100 mbps data rates but it seems they are far lower than that. My own calculations if the rumored space at 49.8gb for The Martian is true they are around 45 mbps for video. I own several Blu-Ray's that average in the high 30's. I would have expected around 60 mbps as a minimum. Spare me the efficiency of the codec crap. That is the equivalent of pushing for 10 mbps VC1 encodes on HDDVD again barely pushing the bitrates above DVD. Which actually was a push toward the end due to the limited disc capacity of 15 and 30gb. With 66gb for a film these discs better be damn near maxed out. The average file size for a 4K digital film displayed in the theater is right around 250gb.

I am praying for caps-a-holic caps soon!

[Oliver K]

I agree that caps can be very valuable - not for every parameter but if there is more detail then it will show up.

With all the raves in reviews and in the threads about certain UHD discs having a lot of detail / more detail than the Blu-ray version one would think that somebody could just take pictures of his screen to show the difference in detail between the two. I have seen such pictures for some of the movies on the Sony 4k server but so far not a single convincing one from UHD discs.

[scorpiontail60]

I have no idea why none of these reviewers are providing screenshots of UHD Blu-rays, but anyways, I'll provide some.

Salt:


The Lego Movie:


Chappie:


The Martian:

[bruceames]

Thanks. Would be nice to see a three way comparision between a few of the Sony movies. Sony 4K download vs. UHD vs. BD. Of course to appreciate the difference that HDR makes would require comparing them on an HDR display, but at least we can see the difference in detail.

[pawel86ck]

Thanks man , but these screenshots represents convertion to SDR, so it's not possible to judge HDR implemenation anyway. But resolution, and colors looks better even on my SDR monitor (especially THE LEGO MOVIE, bluray verison looks washed out in comparison). Also compression looks better than I expected.

http://screenshotcomparison.com/comparison/164636
Chappie screenshots have cliped whites for sure. I think that's result of HDR - SDR conversion, but besides that cliped whites I like what I'm seeing . I cant imagine how great chappie will look on HDR HDTV, with white details in place (that are cliped on these SDR screenshots).

[kristoffer]

Very cool.

[Derb]

Go get Exodus & you'll be busy taking screenshots for a week.

[Opips3]

wow, dark area in sense films..