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#1321 | |
Blu-ray Baron
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As I do both physical and digital, 95% of these on digital are Dolby Vision from day 1 and the benefits that DV beings are noticeable on both my TVs on 90% of these movies. I do get the lectures about tone mapping but I can only go by what I see with my own eyes. ![]() Think I already made up my mind to give this a try after passing Ghostbusters, Kwai, Dracula and MIB (I don't even know if it got DV) which I may get in future. |
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#1322 |
Expert Member
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Weird halos/outlines around things starting at around 1:13:00 when they get to the planet. Really distracting is this present in other versions? Watching in DV.
EDIT it's some sort of problem with my system it seems Last edited by Vriess; 11-06-2022 at 08:48 AM. |
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#1323 |
Blu-ray Baron
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#1325 |
Blu-ray Knight
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I don't see Disney doing it at all tbh. With how stingy they are on catalogue stuff I can imagine them going "well, we don't have domestic rights with this one anyway so why bother".
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#1327 | |
Blu-ray Knight
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Will be interesting to hear if others can confirm. |
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Thanks given by: | Vriess (11-06-2022) |
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#1328 | ||
Blu-ray Samurai
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@lgans316: can't wait for your feedback, once you've checked the timestamp! If you also find these halos, it's very likely, I'll see it myself. I own a UB9000... My disc is already on the way. Pretty psyched about it! Would be such a shame, if the DV layer were screwed up, the DV is WHY most people got this release in the first place! Last edited by Rollo Tomassi; 11-06-2022 at 10:22 AM. |
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#1329 | |
Expert Member
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#1331 | |
Blu-ray Baron
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I did check the Dolby Vision stream on iTunes and couldn't spot anything weird between 1:13:00 and 1:14:00. Also compared it with the HDR10 stream on MoviesAnywhere and they looked almost identical except for a wee bit more colour depth and highlights a tad less blown out on the DV stream. Once again I am no expert so YMMV |
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Thanks given by: | Rollo Tomassi (11-06-2022) |
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#1332 | |
Active Member
Oct 2020
Canada
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LOL the new DV 25th-anniversary disc has static L1 Dolby vision metadata... see here for more DV plot graphs: https://drive.google.com/drive/u/1/f...DV8QKFJwFxnDt- ![]() Last edited by TbeRw01; 11-06-2022 at 12:03 PM. |
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Thanks given by: | andreasy969 (11-06-2022), bleakassassin (11-07-2022), dlbsyst (11-06-2022), Fat Phil (01-23-2023), Geoff D (11-06-2022), lgans316 (11-06-2022) |
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#1333 | |
Blu-ray Baron
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Is this specific to this disc or apply to the ones released by Sony recently with DV grade (Kwai, Ghostbusters and Dracula)? The main question is how does the DV grade look in your own equipment irrespective of what's stuffed inside? For the record, I don't own any of the Sony regrades except Karate Kid. I didn't buy as they are expensive and I already got the old disc and the DV streams on iTunes. |
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#1334 | |
Active Member
Oct 2020
Canada
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FYI, the itunes DV stream has exactly the same static metadata. the method is not super easy if you're not familiar with python: You have to rip the disc to mkv, extract the DV layer, extract the DV rpu (metadata) and plot the graph with a script. |
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Thanks given by: | lgans316 (11-06-2022) |
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#1335 | |
Blu-ray Knight
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Thanks given by: | TbeRw01 (11-06-2022) |
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#1336 | |
Blu-ray Baron
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Regarding itunes DV stream has exactly the same static metadata, thanks for the clarification. All I have is Apple TV Developer HUD and based on my comparison, I have said above that they almost look identical except for DV having a bit more nuanced colours and a bit less blown out highlights but again I don't know if its due to the metadata or my TV but my observation still holds good on both my TVs (77A80J and 65ZD9). I am familiar with Python and Java but for enterprise grade development. |
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#1337 | ||
Active Member
Oct 2020
Canada
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Also, streaming services use a more efficient colorspace which is the equivalent of YCbCr 11.5bits. |
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Thanks given by: | lgans316 (11-06-2022) |
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#1338 |
Blu-ray Samurai
Jul 2008
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No wonder DV resolves the Light Cannon issue:
HDR10 MaxFALL = 2342 nits Dolby Vision MaxFALL = 124 nits The real question is why they choose to set HDR10 metadata so high?? Makes no sense to me... |
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#1339 | |
Blu-ray Baron
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https://www.hdnumerique.com/dossiers...y-sonic-2.html On the UB820, think it was showing 2100 nits MaxCLL and MaxFALL 281 nits However, the site says this: In HDR10, the brightness level of the brightest pixel in the entire stream (MaxCLL) is 298 nits. An average value of brightness peaks was measured at 534 nits. Similarly, on the entire feature film, 97.73% of the shots are composed of highlights (with a median of 169 nits) . Regarding HEVC video compression, the average bitrate was measured at 41781 kbps and 45645 kbps (with Dolby Vision overlay). and yours https://drive.google.com/file/d/13D2...ew?usp=sharing So which one is correct? Last edited by lgans316; 11-06-2022 at 01:04 PM. |
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#1340 | |
Active Member
Oct 2020
Canada
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When they grade DV properly, they run the Dolby algorithm to generate L1 metadata which measure and maps all the pixels of the actual HDR grade. It creates a min_pq, max_pq and avg_pq for EACH SHOT. L1 should never lie to the TV like it does in this BD. The brightness adaptation to different displays is done in the L2 trim passes, not L1 which is what the graph plot is. Then they do the time-consuming part of the DV creation: the L2 trim passes where they have to go shot by shot again and adjust everything for different brightness outputs (usually 100/600/1000nits trims). This is the metadata your TV use to adapt the content to its internal capabilities. In other words, using static L1/L2 metadata makes no sense to me and the only reason I see is to save time a money. |
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Thanks given by: | lgans316 (11-06-2022) |
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