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Jeremy

Member
Oct 25, 2017
6,639
How much of a jump do you get from says iTunes 4k versus the BR?

It needs to be stressed that iTunes and AppleTV+ have much higher bitrate than other streaming services. AppleTV+ is close to 30 Mb/s... Probably 1.5x-2x a Netflix or other streaming service stream (and comparable to the bitrate of a 1080p blu-ray disc).

So, those are basically your best 4k streaming options... I think the biggest difference is probably in audio in practice (the disc versions are generally lossless).

That said, well-mastered 4k discs will be at least double what AppleTV+ offers. I just watched Tenet and it was > 75 Mb/s... so significantly better.

A lot of the real world experience of these bit rates, though, probably depends on the stability of your internet connection and the quality of your display and audio equipment. If you have a top-end OLED you will be more able to see the difference than if you have an inexpensive 4k LED display... If you're using your TV's built in speakers, streaming audio is probably "good enough."
 

bionic77

Member
Oct 25, 2017
30,888
It needs to be stressed that iTunes and AppleTV+ have much higher bitrate than other streaming services. AppleTV+ is close to 30 Mb/s... Probably 1.5x-2x a Netflix or other streaming service stream (and comparable to the bitrate of a 1080p blu-ray disc).

So, those are basically your best 4k streaming options... I think the biggest difference is probably in audio in practice (the disc versions are generally lossless).

That said, well-mastered 4k discs will be at least double what AppleTV+ offers. I just watched Tenet and it was > 75 Mb/s... so significantly better.

A lot of the real world experience of these bit rates, though, probably depends on the stability of your internet connection and the quality of your display and audio equipment. If you have a top-end OLED you will be more able to see the difference than if you have an inexpensive 4k LED display... If you're using your TV's built in speakers, streaming audio is probably "good enough."
I have a big OLED and honestly the sound jumped out to me more than the video.
 

FrsDvl

Member
Oct 25, 2017
1,118
If you really want to see what 4K and HDR is capable of, Gemini Man. Horrible movie, but out of the 100+ UHD discs I own, nothing quite compares to it.
 

Ronald_Raygun

Member
Oct 27, 2017
279
Austin
Since everyone has already recommended the hits (BR2049!!) I'll say:

Aquaman
Mission Impossible Fallout
Akira

Akira came out a couple weeks ago and looks great.
 

RedMercury

Blue Venus
Member
Dec 24, 2017
17,648
I got Alien, BR2049, and Mad Max recently, my first UHD's and I was disappointed that I don't really see a ton of difference from streaming them on Emby. I see an improvement over Blu-Ray but it's not like HUGE or anything. I have a 65" Vizio M-Series, I sit about 8 feet away, using a PS5 to play them. Just seems useless to buy them if I can stream them with little difference.
 

samred

Amico fun conversationalist
Member
Nov 4, 2017
2,584
Seattle, WA
The 1995 version of Ghost in the Shell looks lovely, but it's understated, not exactly an HDR stunner or anything. The Hobbit trilogy may put you to sleep, but WB didn't mess around with its 4K release in terms of image quality, it's ridiculously good.

Midsommar if you feel like dropping the dosh

Gorgeous in 4K... but seriously, don't watch this while under the influence of any drugs. It's already its own acid trip.

Akira came out a couple weeks ago and looks great.

Sadly, the USA set that just came out is missing HDR metadata. Funimation has acknowledged the fuck-up and says they'll accept discs in the mail from anyone seeking a replacement. You may just wanna wait until they get the discs swapped out for a relaunch in February.
 

platocplx

2020 Member Elect
Member
Oct 30, 2017
36,072
The 1995 version of Ghost in the Shell looks lovely, but it's understated, not exactly an HDR stunner or anything. The Hobbit trilogy may put you to sleep, but WB didn't mess around with its 4K release in terms of image quality, it's ridiculously good.



Gorgeous in 4K... but seriously, don't watch this while under the influence of any drugs. It's already its own acid trip.



Sadly, the USA set that just came out is missing HDR metadata. Funimation has acknowledged the fuck-up and says they'll accept discs in the mail from anyone seeking a replacement. You may just wanna wait until they get the discs swapped out for a relaunch in February.
I really want more 4K anime. I just ordered Ghost in 4K and I'm waiting for Akira in feb
 

D23

Member
Oct 25, 2017
2,824
Pacific rim
John wick series
Blade runner 2049
Passengers
Lucy
The revenant
Planet earth 2
Dunkirk
Aien covenant
Gemini man
 

Tttssd1972

Member
May 24, 2019
2,478
Just got a pretty big haul ordered from Best Buy:

- The Shining
- The Evil Dead
- Evil Dead 2
- Halloween 1978, Steelbook
- The Town
- IT
- Full Metal Jacket
- Pre-ordered- They Live
 

Chance Hale

Member
Oct 26, 2017
11,828
Colorado
Gemini man makes me sad uhd decided to avoid high frame rate support.

Absolute trash but seeing at 120 FPS in theaters was a genuinely different experience

Get back to lust caution esqe films tho Lee damn
 

FaceHugger

Banned
Oct 27, 2017
13,949
USA
The recent Lord of the Rings extended trilogy probably takes the cake because of the sheer amount of improvements it makes upon the original blu-rays, and how gorgeous it is.
 

Chance Hale

Member
Oct 26, 2017
11,828
Colorado
Gemini Man UHD does have HFR...? It's gorgeous.
Oh shit okay, just know the hobbit wasn't supported because it was a 48 FPS presentation in theaters(uhd is 24 or 60 FPS I think) and I saw Gemini man at 120 FPS in one of the few theaters that showed it that way so will have to pick up the uhd for the novelty of 60
 
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diverit

Member
Oct 27, 2017
183
It depends on what one wants to watch.

I have said in two other 4K recommendations threads that Gemini Man and Billy Lynn's Long Halftime Walk are the best visually since they are totally unique discs to the 4K format.

If you want crisp, you have to figure out what type of camera was used then pick from a list of what movies you like. If you do not mind grain, then you have a lot more options.

In any case, it just depends on what one wants to watch. There are reviews online if you want to know about a release.

I have just under 250 discs and while I would not recommend all of them (some have DNR), I would say that most are worth it since they offer improvements over blu ray/DVD releases.
 

Waffle

Member
Oct 28, 2017
2,821
I want to check out gemini man in HFR. Can any of the consoles playback HFR blu rays or do I need to buy a dedicated player?
 

Pargon

Member
Oct 27, 2017
11,991
Really, predator 1 has always had notoriously noisy transfers, does this one address that?
The UHD disc is the grainiest release yet.
Whether that's a good or bad thing depends on the viewer.

Blu-ray on the left, UHD on the right:
predator-bdooki0.jpg
predator-uhdl9jwi.jpg


With high-resolution scans, and the high bit-rates available on UHD discs, this is the closest you can get to the original film look.
The problem is that de-graining or de-noising the image removes detail, makes it look lower resolution, and does things like making skin have a waxy appearance.

That said, even an average bit-rate of ~90 Mb/s is not enough to encode all this noise.
I was randomly skipping through the disc, and in the scene where Arnold says, "If it bleeds, we can kill it." (01:01:34), it's possible to see patterns in the noise from the encoder, rather than being completely random.

Carefully applied de-noising (DNR) and then adding finer resolution grain can give the appearance of a higher resolution image - without too much of that waxy look. But it will never be perfect.
The original Aliens Blu-ray release was widely praised and held up as a reference for older film transfers, despite using this technique.

Many people dislike the look of the Terminator 2 UHD disc because it's been DNR'ed to the point that skin loses its texture and has a waxy appearance.
t2compare95k1r.jpg


But it's not like they scrubbed away all the detail, as some have said.
The transfer still has a lot more fine detail than the old Blu-ray release - which was lost due to both a lower resolution transfer and worse encoding.
If we compare a random shot, rather than an 'important' one which may have had more care taken, this is very clear:
t2compare1jjt8.gif

Click for a larger view.

Despite the heavy-handed DNR, there's still considerably more detail in this new transfer.
The biggest problem I have with the UHD release is that the new color grade gives it a modern teal/orange look with 'perfect' skin tones. It loses what I had considered the film's iconic look.

This is a problem with many UHD releases for me. They restore a lot of detail but come with a new color grade for HDR, which loses the original look.
It's a controversial opinion here, but I even prefer how the older Matrix Blu-rays look compared to the new UHD releases. I don't like that new color grading.
I've been meaning to seek out an old DVD with the original color grade, but have been hesitant because I would need to import it - which drives up the cost. I believe they did release the green-tinted version on DVD retroactively, and I don't want to end up with that.
 
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geomon

Member
Oct 25, 2017
8,007
Miami, FL
The transfer still has a lot more fine detail than the old Blu-ray release - which was lost due to both a lower resolution transfer and worse encoding.
I disagree when it comes to the 2015 blu-ray release. That release has better detail and color timing. The Skynet Edition is pure DNR'd garbage.

I've been meaning to seek out an old DVD with the original color grade, but have been hesitant because I would need to import it - which drives up the cost. I believe they did release the green-tinted version on DVD retroactively, and I don't want to end up with that.
You need to find the original 1999 snap case DVD if you want the original theatrical color timing, which I have and will never, ever part with. You can find copies of that on ebay for $5 though.
 

Huey

Member
Oct 27, 2017
13,178
The UHD disc is the grainiest release yet.
Whether that's a good or bad thing depends on the viewer.

Blu-ray on the left, UHD on the right:
predator-bdooki0.jpg
predator-uhdl9jwi.jpg


With high-resolution scans, and the high bit-rates available on UHD discs, this is the closest you can get to the original film look.
The problem is that de-graining or de-noising the image removes detail, makes it look lower resolution, and does things like making skin have a waxy appearance.

That said, even an average bit-rate of ~90 Mb/s is not enough to encode all this noise.
I was randomly skipping through the disc, and in the scene where Arnold says, "If it bleeds, we can kill it." (01:01:34), it's possible to see patterns in the noise from the encoder, rather than being completely random.

Carefully applied de-noising (DNR) and then adding finer resolution grain can give the appearance of a higher resolution image - without too much of that waxy look. But it will never be perfect.
The original Aliens Blu-ray release was widely praised and held up as a reference for older film transfers, despite using this technique.

Many people dislike the look of the Terminator 2 UHD disc because it's been DNR'ed to the point that skin loses its texture and has a waxy appearance.
t2compare95k1r.jpg


But it's not like they scrubbed away all the detail, as some have said.
The transfer still has a lot more fine detail than the old Blu-ray release - which was lost due to both a lower resolution transfer and worse encoding.
If we compare a random shot, rather than an 'important' one which may have had more care taken, this is very clear:
t2compare1jjt8.gif


Despite the heavy-handed DNR, there's still considerably mode detail in this new transfer.
The biggest problem I have with the UHD release is that the new color grade gives it a modern teal/orange look with 'perfect' skin tones. It loses what I had considered the film's iconic look.

This is a problem with many UHD releases for me. They restore a lot of detail but come with a new color grade for HDR, which loses the original look.
It's a controversial opinion here, but I even prefer how the older Matrix Blu-rays look compared to the new UHD releases. I don't like that new color grading.
I've been meaning to seek out an old DVD with the original color grade, but have been hesitant because I would need to import it - which drives up the cost. I believe they did release the green-tinted version on DVD retroactively, and I don't want to end up with that.
Awesome post, thanks for this
 

Suede

Gotham's Finest
Member
Oct 28, 2017
12,498
Scotland
Out of the ones I own so far (don't have too many) Jurassic World: Fallen Kingdom is probably the best one I've seen.
 

Pargon

Member
Oct 27, 2017
11,991
I disagree when it comes to the 2015 blu-ray release. That release has better detail and color timing. The Skynet Edition is pure DNR'd garbage.
Sorry, when I said "old Blu-ray release", I meant the 2015 disc - not the original release.
That's the one I used for the comparison GIF. I think I got rid of my original disc after comparing the two, as I can't seem to find it now.
The DNR used in the UHD release removes too much grain and makes the image lack texture, but it still has much more resolution and fine detail than any of the Blu-rays due to the improved scan.
The extra resolution doesn't matter to me when I hate how it looks, though - so I'm likely to keep watching the Blu-ray. I hope they go back and re-grade the new scan at some point to restore the original look.

You need to find the original 1999 snap case DVD if you want the original theatrical color timing, which I have and will never, ever part with. You can find copies of that on ebay for $5 though.
Ah, thank you. Now I know to look out for that version.
The last time I looked into it, there wasn't much information on what releases had the original color timing.

Awesome post, thanks for this
No problem.
 

Quint75

Member
Mar 6, 2019
1,042
The Jaws disc is absolutely stunning. Every single bit of Spielberg's gift as a director is on display, and he was only 28 years old. Compare it's look to other films of the 70s. It's unreal.

I also really love the transfer of The Revenant, which was completely shot with natural lighting. Beautiful does not begin to describe it.
 

Brandino

Banned
Jan 9, 2018
2,098
How is the quality on the Game of Thrones box set. Already bought it, but curious what I'm in for when I get a chance to watch it
 

matrix-cat

Member
Oct 27, 2017
10,284
I've been spending way too much time on Caps-a-holic lately and I'm surprised at how often the UHD 'upgrade' is dubious at best and every now and then straight up worse than the regular Blu Ray. I recently bought cheap copies of Collateral and Interstellar on regular Blu Ray because I think they both look much better than the UHDs (negligible difference in detail but much less appealing colour grades on the UHDs).

One that really shocked me was the 4K versions of the Star Wars Original Trilogy. They're a very nice, noticeable upgrade in detail but they're so fucking DARK it's unreal! To the point where I wonder if maybe there isn't some kind of HDR issue with the caps on Caps-a-holic, because it seriously looks flat out broken. Right from moment one, the famous stark-white hallways of the Tantive IV at the start of A New Hope are a dull grey, like you're watching the movie with sunglasses on.
 
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Gouty

Member
Oct 25, 2017
1,658
Blade Runner 2049 always gets brought up in these lists and that's fine, its a phenomenal transfer. That said I feel like it should come with the understanding that while it is gorgeous, its not a great disc if you're new to HDR and looking to see what your new television is capable of. In terms of bright highlights it's actually not any brighter than the standard bluray. This has been measured and proven to be the case.

Again, beautiful disc and the 4k version is the one to get if you have the option but in regards to HDR / highlights its not the demo many think it is.
 

XMonkey

Member
Oct 26, 2017
6,827
I've been spending way too much time on Caps-a-holic lately and I'm surprised at how often the UHD 'upgrade' is dubious at best and every now and then straight up worse than the regular Blu Ray. I recently bought cheap copies of Collateral and Interstellar on regular Blu Ray because I think they both look much better than the UHDs (negligible difference in detail but much less appealing colour grades on the UHDs).

One that really shocked me was the 4K versions of the Star Wars Original Trilogy. They're a very nice, noticeable upgrade in detail but they're so fucking DARK it's unreal! To the point where I wonder if maybe there isn't some kind of HDR issue with the caps on Caps-a-holic, because it seriously looks flat out broken. Right from moment one, the famous stark-white hallways of the Tantive IV at the start of A New Hope are a dull grey, like you're watching the movie with sunglasses on.
I've always wondered how does this accurately portray HDR when it's almost certainly being viewed on a non-HDR screen? Do they try to do a conversion to the image files? It seems like it would only be useful to see detail comparisons.
 

matrix-cat

Member
Oct 27, 2017
10,284
But I bet you saved a lot of money lol

Well that part certainly doesn't hurt :P

Yeah, I do wonder how representative Caps really is, considering the nature of lossy compression and the HDR information, but I still find myself spending way too much time on it (Caps-aholic was definitely an apt name). Sometimes you can see that a 4K release is just a night and day, breathtaking upgrade, others it seems like more of a lateral move. If it comes down to a $30 UHD with a middling transfer and a questionable new colour grade vs. like a $4 Blu Ray on eBay I'll definitely go for the regular Blu.
 

Branson

Member
Oct 27, 2017
2,770
Well that part certainly doesn't hurt :P

Yeah, I do wonder how representative Caps really is, considering the nature of lossy compression and the HDR information, but I still find myself spending way too much time on it (Caps-aholic was definitely an apt name). Sometimes you can see that a 4K release is just a night and day, breathtaking upgrade, others it seems like more of a lateral move. If it comes down to a $30 UHD with a middling transfer and a questionable new colour grade vs. like a $4 Blu Ray on eBay I'll definitely go for the regular Blu.
Yeah I know what you mean though. Recent BRs are a lot better than older ones are I've found out. UHDs really help with older encodes upgraded with fresh scans and eyes. If its already great like Interstellar its more about the HDR and increased range of highlights and all of that good stuff.

But I havent noticed anything with the Interstellar color being weird. What was wrong with it? Collateral was more of a sidegrade but I never had the BR before so I was fine with the UHD.
 

matrix-cat

Member
Oct 27, 2017
10,284
But I havent noticed anything with the Interstellar color being weird. What was wrong with it? Collateral was more of a sidegrade but I never had the BR before so I was fine with the UHD.

It just seems a little too warm. All the Nolan UHDs seem noticeably warmer than their Blu Ray counterparts, actually. The colours on the regular Blu Rays just seem more like how I think I remember the movies looking in the theatre. On the UHD the whites look too yellow, the greys look too blue, the flesh tones pop a little too much. But then to be perfectly honest I can't claim to be any kind of authority on what they're 'supposed' to look like, anyway, so for all I know I'm totally off-base ¯\_(ツ)_/¯
 

Pargon

Member
Oct 27, 2017
11,991
I've always wondered how does this accurately portray HDR when it's almost certainly being viewed on a non-HDR screen? Do they try to do a conversion to the image files? It seems like it would only be useful to see detail comparisons.
Tone mapping is used to convert from HDR to SDR.
SDR is intended to be viewed at 100 nits, so I set that in madVR for tone mapping screenshots.
If HDR consistently appears dimmer in screenshot comparisons, the conversion is likely at fault.

An SDR screenshot of an HDR image can never represent it accurately but can illustrate changes in a film's overall look.
Tone mapping can also be used with SDR displays to create an "enhanced dynamic range" signal. If my SDR display supports a maximum of 400 nits brightness, I can tone map to that and gain a couple of stops of dynamic range above SDR.
Even when mapped to 100 nits, which matches the SDR standard, many of these releases still look better.

I've been spending way too much time on Caps-a-holic lately and I'm surprised at how often the UHD 'upgrade' is dubious at best and every now and then straight up worse than the regular Blu Ray. I recently bought cheap copies of Collateral and Interstellar on regular Blu Ray because I think they both look much better than the UHDs (negligible difference in detail but much less appealing colour grades on the UHDs).

One that really shocked me was the 4K versions of the Star Wars Original Trilogy. They're a very nice, noticeable upgrade in detail but they're so fucking DARK it's unreal! To the point where I wonder if maybe there isn't some kind of HDR issue with the caps on Caps-a-holic, because it seriously looks flat out broken. Right from moment one, the famous stark-white hallways of the Tantive IV at the start of A New Hope are a dull grey, like you're watching the movie with sunglasses on.
According to the description, this is tone-mapped to 200 nits - which is twice what it should be for an SDR conversion.
I don't have the Star Wars UHD discs, but I had Gattaca to hand, and it seems to have an HDR grade which is faithful to the original - so I made a comparison.

SDR vs HDR mapped to 200 nits via madVR:
200-nitss8kek.gif


SDR vs HDR mapped to 100 nits via madVR:
100-nitstyjsx.gif


Pay attention to the brightness of the background.
  • Tone mapping HDR to 200 nits dulls the image noticeably compared to SDR.
  • Tone mapping HDR to 100 nits maintains a similar brightness level. The overall look does change a bit (for the better) due to the new HDR grade.
This happens because all SDR content is intended to be viewed at 100 nits, while mapping HDR to 200 nits has the expectation of a display set twice as bright.
P.S. I'm excited to watch this film again, as it's one of my favorites - and it looks like this release has a great transfer after scanning through a few scenes.

Blade Runner 2049 always gets brought up in these lists and that's fine, its a phenomenal transfer. That said I feel like it should come with the understanding that while it is gorgeous, its not a great disc if you're new to HDR and looking to see what your new television is capable of. In terms of bright highlights it's actually not any brighter than the standard bluray. This has been measured and proven to be the case.
Again, beautiful disc and the 4k version is the one to get if you have the option but in regards to HDR / highlights its not the demo many think it is.
I will copy my post from the last time this was brought up:
  • SDR is 100 nits, Blade Runner 2049 spends most of its time above that, in the ~150 nit range.
  • SDR uses the Rec.709 colorspace, Blade Runner 2049 is mastered for Display P3.
  • The movie was shot in 3.4K and mastered at 4K. The SDR disc is 1080p (2K).
  • The SDR disc has a 5.1 DTS-HD track, the HDR disc has a 7.1 TrueHD + Atmos track.
Nearly every scene is improved in HDR - even when tone-mapped back down to 100 nits using a renderer like madVR.
2049-sdr-r0j2w.png
2049-hdr-3mjut.png


Is it an eye-searing, maximum brightness all the time, HDR reference disc? Certainly not.
But the UHD release improves greatly upon the SDR disc, and it's an absolutely stunning film to look at.

I don't think an engrossing film with beautiful cinematography should be disregarded when people ask what films look best on UHD just because it does not meet some arbitrary brightness threshold.
 

matrix-cat

Member
Oct 27, 2017
10,284
According to the description, this is tone-mapped to 200 nits - which is twice what it should be for an SDR conversion.
I don't have the Star Wars UHD discs, but I had Gattaca to hand, and it seems to have an HDR grade which is faithful to the original - so I made a comparison.

SDR vs HDR mapped to 200 nits via madVR:
200-nitss8kek.gif


SDR vs HDR mapped to 100 nits via madVR:
100-nitstyjsx.gif


Pay attention to the brightness of the background.
  • Tone mapping HDR to 200 nits dulls the image noticeably compared to SDR.
  • Tone mapping HDR to 100 nits maintains a similar brightness level. The overall look does change a bit (for the better) due to the new HDR grade.
This happens because all SDR content is intended to be viewed at 100 nits, while mapping HDR to 200 nits has the expectation of a display set twice as bright.
P.S. I'm excited to watch this film again, as it's one of my favorites - and it looks like this release has a great transfer after scanning through a few scenes.

Thanks for this, that's really helpful. I figured it had to be something like that, because I couldn't believe the UHDs could actually look like that in person. I'll pay more attention to the nits count in the future.
 

Dommo

Member
Oct 25, 2017
1,687
Australia
Well that part certainly doesn't hurt :P

Yeah, I do wonder how representative Caps really is, considering the nature of lossy compression and the HDR information, but I still find myself spending way too much time on it (Caps-aholic was definitely an apt name). Sometimes you can see that a 4K release is just a night and day, breathtaking upgrade, others it seems like more of a lateral move. If it comes down to a $30 UHD with a middling transfer and a questionable new colour grade vs. like a $4 Blu Ray on eBay I'll definitely go for the regular Blu.

Basically, when it comes to comparing BD vs UHD screencaps in an SDR format, you can look at it for its indication of resolution and detail uptick, and maaaaybe a comparison for its relative colour grade changes.

When it comes to brightness levels though, outright ignore the comparison, because for HDR imagery to be downconverted to SDR requires an inaccurate and compromised transfer. There's no point in looking at the Star Wars UHD caps and saying "that looks a lot dimmer." It's almost definitely due to the downconversion to SDR. Depending on how it's downconverted, it'll either look dim, dark, or the highlights will be blown out. There's no way around it really. You can't accurately present HDR brightness levels in SDR.
 

matrix-cat

Member
Oct 27, 2017
10,284
Basically, when it comes to comparing BD vs UHD screencaps in an SDR format, you can look at it for its indication of resolution and detail uptick, and maaaaybe a comparison for its relative colour grade changes.

When it comes to brightness levels though, outright ignore the comparison, because for HDR imagery to be downconverted to SDR requires an inaccurate and compromised transfer. There's no point in looking at the Star Wars UHD caps and saying "that looks a lot dimmer." It's almost definitely due to the downconversion to SDR. Depending on how it's downconverted, it'll either look dim, dark, or the highlights will be blown out. There's no way around it really. You can't accurately present HDR brightness levels in SDR.

Yeah, that totally makes sense. I knew there had to be something going on, because some of those UHD caps do just look so wrong, but I just didn't know enough about HDR to know for sure. I'll keep it in mind!
 

Dark Ninja

Member
Oct 27, 2017
8,070
Avengers 1 in UHD is insane something about the image quality is crazy it's the most 4K movie I've seen. Older movies in 4K make me smile like T2, Predator, and Blade UHD which came out not long ago. I can watch a bad movie in 4K and enjoy it if it's a good conversion.
 

XMonkey

Member
Oct 26, 2017
6,827
Tone mapping is used to convert from HDR to SDR.
SDR is intended to be viewed at 100 nits, so I set that in madVR for tone mapping screenshots.
If HDR consistently appears dimmer in screenshot comparisons, the conversion is likely at fault.

An SDR screenshot of an HDR image can never represent it accurately but can illustrate changes in a film's overall look.
Tone mapping can also be used with SDR displays to create an "enhanced dynamic range" signal. If my SDR display supports a maximum of 400 nits brightness, I can tone map to that and gain a couple of stops of dynamic range above SDR.
Even when mapped to 100 nits, which matches the SDR standard, many of these releases still look better.


According to the description, this is tone-mapped to 200 nits - which is twice what it should be for an SDR conversion.
I don't have the Star Wars UHD discs, but I had Gattaca to hand, and it seems to have an HDR grade which is faithful to the original - so I made a comparison.

SDR vs HDR mapped to 200 nits via madVR:
200-nitss8kek.gif


SDR vs HDR mapped to 100 nits via madVR:
100-nitstyjsx.gif


Pay attention to the brightness of the background.
  • Tone mapping HDR to 200 nits dulls the image noticeably compared to SDR.
  • Tone mapping HDR to 100 nits maintains a similar brightness level. The overall look does change a bit (for the better) due to the new HDR grade.
This happens because all SDR content is intended to be viewed at 100 nits, while mapping HDR to 200 nits has the expectation of a display set twice as bright.
P.S. I'm excited to watch this film again, as it's one of my favorites - and it looks like this release has a great transfer after scanning through a few scenes.


I will copy my post from the last time this was brought up:
  • SDR is 100 nits, Blade Runner 2049 spends most of its time above that, in the ~150 nit range.
  • SDR uses the Rec.709 colorspace, Blade Runner 2049 is mastered for Display P3.
  • The movie was shot in 3.4K and mastered at 4K. The SDR disc is 1080p (2K).
  • The SDR disc has a 5.1 DTS-HD track, the HDR disc has a 7.1 TrueHD + Atmos track.
Nearly every scene is improved in HDR - even when tone-mapped back down to 100 nits using a renderer like madVR.
2049-sdr-r0j2w.png
2049-hdr-3mjut.png


Is it an eye-searing, maximum brightness all the time, HDR reference disc? Certainly not.
But the UHD release improves greatly upon the SDR disc, and it's an absolutely stunning film to look at.

I don't think an engrossing film with beautiful cinematography should be disregarded when people ask what films look best on UHD just because it does not meet some arbitrary brightness threshold.
Super informative, thanks! And totally agree about BR2049.
 

JahIthBer

Member
Jan 27, 2018
10,376
Any 35mm movie with a Native 4K conversion looks sexy. Jurassic Park 4K looks like it came out today.