HDR heatmaps and torch mode UHDs

[nissling]

Originally Posted by trevorlj

Quiddich World Cup opening speech and the graveyard scene at the end of Goblet of Fire also.

Are both of those scenes from Goblet of Fire? I don't know anything about Harry Potter so just let me know exactly what I should look out for when doing the analysis. If anyone has any time codes those would also be very appreciated.

Casino (Universal, HDR10 @ 1000 nits white/0.005 nits black)

I know Pyoko did this one a few years back but I couldn't resist having a look at it myself. Absolutely magnificent HDR and WCG usage.

Heatmaps

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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[nissling]

Awaken (Gunpowder & Sky, HDR10 and Dolby Vision)

It tries to look pretty and that's it. This is something you'd use in a store to sell TVs.

The black dot in the sun in the waterfall shot (#13) is part of the image. It really looks like that on the disc and is caused by an integer overflow. This can happen with heavy SDR grading but I've never seen this in HDR before.

Heatmaps

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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[trevorlj]

Originally Posted by nissling

Are both of those scenes from Goblet of Fire? I don't know anything about Harry Potter so just let me know exactly what I should look out for when doing the analysis. If anyone has any time codes those would also be very appreciated.

Yeah...both scenes are in there. Most TV's blow out all the highlights on the HDR 4K disc.

9:22-9:42 - Highlights on the minister's face are usually blown out (very little detail)

2:09:00-2:09:40 - Ghostly figures are blown out and difficult to see. That and the magic wand effects are missing gradients in brightness

The reason I ask is people (myself included) usually blame this on the TV's tone mapping or brightness capabilities but maybe detail got wiped out when it was graded for HDR. That's really the question.

[nissling]

Originally Posted by trevorlj

The reason I ask is people (myself included) usually blame this on the TV's tone mapping or brightness capabilities but maybe detail got wiped out when it was graded for HDR. That's really the question.

I'll take a look at this. On waveforms and histograms it's very evident if there's any clipping.

Taxi Driver

I spent way too much time on this one. We had a short discussion on a different forum regarding the color of the blood during the shootout scene as it was heavily altered for the original release to avoid an X rating. To fully see what was going on with this film I ended up comparing it to the old Blu-Ray, which is based on the very same restoration but still has a slightly different color rendition.

At first glance the UHD may seem rather bright but looking at the regular Blu it was pretty bright in the first place so they are perfectly comparable. Not a regular Sony light cannon title. Highlights tend to get brighter and are never clamped. While the BD was very fine for sure I feel the UHD is the ultimate presentation.

Heatmaps HDR

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Heatmaps SDR

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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Blu-Ray

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[Macatouille]

Originally Posted by nissling

Taxi Driver

I spent way too much time on this one. We had a short discussion on a different forum regarding the color of the blood during the shootout scene as it was heavily altered for the original release to avoid an X rating. To fully see what was going on with this film I ended up comparing it to the old Blu-Ray, which is based on the very same restoration but still has a slightly different color rendition.

At first glance the UHD may seem rather bright but looking at the regular Blu it was pretty bright in the first place so they are perfectly comparable. Not a regular Sony light cannon title. Highlights tend to get brighter and are never clamped. While the BD was very fine for sure I feel the UHD is the ultimate presentation.

Love that you're basically taking over the weekend shift around here. Keep up the good work.

[nissling]

Originally Posted by Macatouille

Love that you're basically taking over the weekend shift around here. Keep up the good work.

No problemo! Reservoir Dogs is up next.

I got some help from a friend of mine who made minor changes to the scripts, so it can now load screenshots directly off my Google Drive and upload the final heatmaps and gamut visualizations to it as well. Saves me plenty of time considering how slow Google Colab uploads are while Google Drive is instant. Let me know if anyone here (including Dorian of course) wants to get the modified scripts.

[Macatouille]

Originally Posted by nissling

No problemo! Reservoir Dogs is up next.

I got some help from a friend of mine who made minor changes to the scripts, so it can now load screenshots directly off my Google Drive and upload the final heatmaps and gamut visualizations to it as well. Saves me plenty of time considering how slow Google Colab uploads are while Google Drive is instant. Let me know if anyone here (including Dorian of course) wants to get the modified scripts.

I would love that, at least for the gamut piece. I downloaded the heatmap script and edited it to run locally (mostly to learn, as my python knowledge is lacking).

[nissling]

Will send you (yet another) pm

[nissling]

Reservoir Dogs (Lionsgate Films, HDR10 and Dolby Vision FEL)

4000 nits white, 0.005 nits black
MaxCLL: 341 nits
MaxFALL: 57 nits

Very similar to the SDR presentation in terms of brightness. However the increase in resolution is really incredible this time around. Kind of surreal to see a low-budget 90s film look this sharp with a nearly crazy amount of fine detail. Colors are a bit on the red side but I like it.

Heatmaps

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Gamut visualization

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Tonemap (BT.2100 to BT.709 using Davinci)

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[dorian]

Originally Posted by nissling

No problemo! Reservoir Dogs is up next.

I got some help from a friend of mine who made minor changes to the scripts, so it can now load screenshots directly off my Google Drive and upload the final heatmaps and gamut visualizations to it as well. Saves me plenty of time considering how slow Google Colab uploads are while Google Drive is instant. Let me know if anyone here (including Dorian of course) wants to get the modified scripts.

I run the scripts locally. I altered them specifically for the notebook in a kind of fool-proof way so that those unfamiliar with python can participate. I'm not a programming whizz by any stretch and I myself have learnt a lot delving into this. The code is still a bit of a mess and could surely be made more efficient.

The upload speeds for Google Colab are awful. It was jarring enough for me and I only did it a few times to ensure the code executes correctly. Respect to you, Macatouille, and anyone else who has contributed.

[nissling]

Lucy (Universal Pictures, HDR10)

1000 nits white, 0.005 nits black
MaxCLL: 1000 nits
MaxFALL: 400 nits

Highlights are just as clipped in HDR as SDR, but rather the brighter elements are brightened to give more pop. It might as well just be an SDR to HDR conversion. When comparing it to SDR with 203 nits peak white, averages are very similar to that already bright Blu-Ray. At the same time blacks are generally lifted and make shadow detail more obvious on the HDR presentation. Pretty mixed considering how cranked the contrast looks otherwise. Colors do exceed BT.709 on occasion but is mostly within. The overall brighter image prevents colors from having major saturation which seems to be fully intentional.

The low-pass filter on the regular Blu-Ray causes the image to have a generally soft appearence and was thankfully fixed on the UHD, making the differences in sharpness rather striking throughout most of the film. That's the main advantage of the UHD to me.

This is a disc that seems to be many people's favorite and while I can see the appeal, I always felt like the movie has a rather sterile look to it. It feels more like watching a nature film than a feature film. If that's your game then this is a very safe bet.

The last heatmap show some additional clipping in SDR. I double checked and can confirm that the brighter highglights are within the WTW range. Thus it's not visible when converted from Legal levels to Data levels but will of course be visible on a properly calibrated setup.

Heatmaps HDR

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Heatmaps SDR

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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Blu-Ray

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[dorian]

Cleaned up the code for the gamut notebook. Should run better now but feel free to alter it as you wish.

Also added the option to specify a Google Drive folder containing the screenshots as nissling suggested.

[Macatouille]

The Matrix Revolutions (2003)

Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2
Maximum Content Light Level              : 996 cd/m2
Maximum Frame-Average Light Level        : 249 cd/m2

Heatmaps

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Gamut Visualizations

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HDR10 Plot

[Macatouille]

Just like with Reloaded, lots of bright highlights (but the whole movie isn't overly elevated) and tons of shots exceeding Rec. 709 and P3:










I got Resurrections coming up next, followed by Batman (1989) and the whole Mission: Impossible series.

[nick4Knight]

This thread is becoming epic on a daily basis! Talk about spoiled between you lot. Can't tell you how much I appreciate it Looking forward to those Mission: Impossible's

[nissling]

Giant (Warner, HDR10)

4000 nits white, 0.005 nits black
MaxCLL: 1559 nits
MaxFALL: 126 nits

I love this film, and this UHD is overall pretty fantastic in just about every regard. The only drawback is the lack of sharpness in the opticals which are rather frequent unfortunately. Since it's part of the film there's not much that can be done to it unless all the unaltered source elements are still available. And even if, recreating all fades, zooms, titles etc is extremely time consuming if you don't want it to appear to have been digitally manipulated.

Still, Warner is getting it just right. Up next is The Shining!

Heatmaps

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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[nissling]

The Shining (HDR10, HDR10+ and Dolby Vision MEL)

4000 nits white, 0.005 nits black
MaxCLL: 1633 nits
MaxFALL: 114 nits

It may even be slightly brighter than A Clockwork Orange but in a rightful way. Was kind of surprised by the green tint on the remastered Blu-Ray but at least it's gone on UHD-BD and that's all I care for. Seems like most opticals and titles have been recreated digitally.

HDR Heatmap

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SDR Tonemap (remastered Blu-Ray, 203 peak white, power law 2.4)

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Gamut visualization

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Tonemap (BT.2100 to BT.709 through Davinci)

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Blu-Ray

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[kishiro]

Have anyone made heatmaps for Sam Mendes' '1917' UHD by any chance..?

[Macatouille]

The Matrix Resurrections (2021)

Mastering display luminance              : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level              : 1044 cd/m2
Maximum Frame-Average Light Level        : 648 cd/m2

Heatmaps

[Show spoiler]

Gamut Visualizations

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HDR10 Plot


Past Posts

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• 12 Monkeys
• Ad Astra
• After Hours
• Akira
• Alien
• Almost Famous
• Apocalypse Now (Final Cut)
• Back to the Future
• Back to the Future Part II
• Back to the Future Part III
• Bad Boys
• Bad Boys 2
• Battle Royale
• Blade Runner: The Final Cut
• Dune
• Edge of Tomorrow
• Godzilla
• Hereditary
• Hocus Pocus
• Indiana Jones and the Temple of Doom
• Interstellar
• The Lord of the Rings: The Fellowship of the Ring
• The Lord of the Rings: The Two Towers
• The Lord of the Rings: The Return of the King
• The Matrix Reloaded
• The Matrix Revolutions
• Raiders of the Lost Ark
• Road House
• Thelma & Louise
• The Usual Suspects

[Macatouille]

Another entry with great use of the WCG: