Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
8th August 2022, 01:26 | #341 | Link | |
Registered User
Join Date: Feb 2020
Posts: 541
|
Quote:
|
|
8th August 2022, 01:28 | #342 | Link | |
Registered User
Join Date: Feb 2020
Posts: 541
|
Quote:
Patents you mean, ffmpeg does not care about patents and VLC is in France, where those patents cannot be used. Last edited by Balling; 8th August 2022 at 01:36. |
|
8th August 2022, 01:31 | #344 | Link | |
Registered User
Join Date: Feb 2020
Posts: 541
|
Quote:
"they're using the Dolby Vision Proprietary colorspace like dvhe0509 and" That was implemented in full. PQ 12 bit mapping would be good though. |
|
8th August 2022, 10:40 | #347 | Link |
Broadcast Encoder
Join Date: Nov 2013
Location: Royal Borough of Kensington & Chelsea, UK
Posts: 2,904
|
|
6th September 2022, 14:26 | #348 | Link |
Registered User
Join Date: Feb 2020
Posts: 541
|
It looks like after lastest commit that finally fixed top-left chroma siting of EL, we can now safely merge FEL and BL. Nice. https://github.com/erazortt/DoViBake...1775d0ffa03528
How would you even check FEL yourself?? I have ABSOLUTELY no idea, root access to my C9 may allow that, but I am not quite sure. I am certainly not checking FEL by just eyeballing it... No Dolby tools I know of will allow to merge FEL just like that. Last edited by Balling; 6th September 2022 at 14:33. |
28th September 2022, 12:32 | #349 | Link |
Banned
Join Date: Oct 2001
Location: https://t.me/pump_upp
Posts: 811
|
There is a new challenge for correct conversion: the movie Heat (1995), released in August on UHD disk. But the movie is too dark, they totally screwed up reference white.
I have measured max.cll =130, and someone 80,20, Web source 167,57. Then I have generated a lut3d with -m 130 -l 5.66 for HLG conversion. 5.66 means 2.5 stops more brightness. Results are good but I'm not sure. Any experience or ideas? Last edited by frank; 28th September 2022 at 12:34. |
28th September 2022, 15:27 | #350 | Link | |
hlg-tools Maintainer
Join Date: Feb 2008
Posts: 413
|
Quote:
I might pick it up just to see how bad it really is. So far, Alita: Battle Angel is the worst I've run into simply because it's a direct cinema XYZ transfer to PQ with botched metadata. EDIT: Wait a sec...130 for MaxCLL? This movie is also a naïve XYZ transfer. Here's your command line: pq2hlg -s 65 -r 48 -m 130 heat.cube Last edited by wswartzendruber; 28th September 2022 at 15:51. |
|
30th September 2022, 09:24 | #354 | Link |
Banned
Join Date: Oct 2001
Location: https://t.me/pump_upp
Posts: 811
|
I'm using mpv on my notebook (500nit FHD+ display) to watch the conversion. It has excellent tone mapping but you have to set it yourself for best colors.
For portable using create the folder mpv/portable_config/ and copy the files:input.conf, mpv.conf Edit mpv.conf: Code:
vo=gpu-next hwdec=auto-safe tone-mapping=bt.2390 hdr-compute-peak=no For more settings see the manual in /mpv/doc/. vlc is also good but doesn't have that many options. ___________________ Dell XPS 15 9510, Win10 Pro Last edited by frank; 30th September 2022 at 09:43. |
30th September 2022, 13:04 | #355 | Link | |
Broadcast Encoder
Join Date: Nov 2013
Location: Royal Borough of Kensington & Chelsea, UK
Posts: 2,904
|
Quote:
The thing is that there's nothing wrong in using the DCP transfer to create the UHD-BD version, but metadata MUST be right and that's unfortunately something they got wrong... Yeah, I use MPV as well, it's the best. The only time I use VLC is when my poor computer struggles with decoding and I'm willing to accept a quality reduction as long as I can still watch it in real time... But yeah, if I had infinite computational power, I would totally use MPV for everything. |
|
5th November 2022, 16:37 | #357 | Link |
Banned
Join Date: Oct 2001
Location: https://t.me/pump_upp
Posts: 811
|
Next example of wrong UHD mastering.
Top Gun: Maverick UHD 2022 max-cll 617,496 Release is too dark. Again they mismatched the white level. I found that -r 100 for HLG is comparable to the BD bt709. So it is created for DCP 100 nits, EOTF PQ, P3. What do you think? Last edited by frank; 5th November 2022 at 16:53. |
6th November 2022, 16:53 | #358 | Link |
hlg-tools Maintainer
Join Date: Feb 2008
Posts: 413
|
I don't have Maverick yet, but if they put reference white at 100 nits, that is actually correct. Well, depending on your point of view.
HDR10 is static metadata around either ST.2084 or ST.2086. And it's one of those that says reference white should be at 100 nits in a reference environment. Well, the ITU came in later and did their own tests and determined that reference white should be at 200 nits in a reference environment. So their BT.2408 paper says to put it at 203 nits, as this corresponds to 75% HLG, which is where reference white is at that format. |
7th November 2022, 14:12 | #359 | Link |
Banned
Join Date: Oct 2001
Location: https://t.me/pump_upp
Posts: 811
|
OK.
My "reference environment" is the living room and tv, not a dark basement. I think 90% of viewers don't sit in the dark to watch a movie on tv. UHD publishers don't get it. That's why I convert to HLG. And 200nits look better on my notebook too. Last edited by frank; 7th November 2022 at 14:36. |
|
|