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#981 | Link |
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Join Date: Oct 2024
Posts: 22
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thanks, while my TV supports cm v4 I tend to avoid tv-led playback as it can be glitchy (regardless of DV playback device). So I tend to switch between the ATV and the Ugoos for player-led. Either way, looks like I should stick with the CPM build.
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#982 | Link | |
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Join Date: Aug 2024
Posts: 12
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Quote:
I got another question not really related to this, but concerning DV movies in general with dark scenes, the dark is really dark and it's really hard to see sometimes, is this considered normal? For instance, for web streaming services (netflix, etc), this problem doesn't seem to exist, and the picture seems to be perfectly balanced in dark scenes where I can still see details. |
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#983 | Link |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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There's a black crush issue with cmv2.9 content especially if the RPU MDL is 4000nits. For 1000nits RPU, it's not really noticeable in real content but it is crushed in patterns.
I did some test files about this a while ago: https://drive.google.com/drive/u/1/f...5FsewWGPBII1Ib On my C2, HDR10 and DV dark scenes look pretty much identical as long as the RPU is not cmv2.9 4000nits.
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#984 | Link |
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Join Date: Oct 2024
Posts: 22
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thinking some more about player-led playback of HDR10 source files processed via 3-1. The ATV supports CM v4 in player-led, per the explanation in a previous post re positive lift, does this explain my impression that the devices have different brightness profiles in player-led mode? I find them to be more similar for MEL 2.9 content, and more different for my 3-1 conversions.
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#985 | Link | |
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Join Date: Aug 2024
Posts: 12
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#986 | Link |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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Since they are two different algorithm, there will be a difference between cmv2.9 or cmv4.0 playback but not much. In a cmv4.0 workflow, the v2.9 L1+generated_L2 should roughly equal v4.0 L1+L3
The ATV seems broken with cmv4.0 in the tests I did a while ago. with the pattern specifically: https://drive.google.com/file/d/1s-3...usp=drive_link
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#987 | Link |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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As I said, as long as the RPU is not cmv2.9 and 4000nits MDL, DV dark scenes look identical to HDR10 on my C2.
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#988 | Link | |
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Join Date: Oct 2024
Posts: 22
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#989 | Link | |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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Quote:
Unless they fixed something recently, the ATV is broken in cmv4.0 at least with 4000-10000 content ( the blue channel specifically ) ![]()
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#990 | Link | |
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Join Date: Oct 2024
Posts: 22
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Quote:
With TV-led DV, from the Ugoos the first 3 or 4 red and green steps are a single block, no grading at all, but the blue channel has all the steps. On the ATV/Infuse all the steps are present in the red channel but there is terrible noise in the 10000 red block. Like the Ugoos, the green channel is one block until it drops to 2500 nits or so. The blue is cleaner on the Ugoos than from the ATV. In player-led, the ATV loses the step grading in the red as well as the green at the brightest levels, it's not very good. The Ugoos renders a clean pattern with all the steps but of course it's not CMv4. This test might confirm my impression that picture quality on my TV is degraded in TV-led mode, since neither the ATV nor the Ugoos were able to produce that good a result in TV-led mode. But it might also be showing that player-led CM v4 from the ATV isn't that great either, suggesting that I may as well stick with player-led from the Ugoos until I change my display? |
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#992 | Link | |
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Join Date: Jan 2025
Posts: 2
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Quote:
Oh I see.....So, "List of DV movies that can't be converted to profile 8 Dolby Vision" doesn't necessarily mean there is a technical hurdle to where nobody can convert it. If it's one of the proper groups then they could actually do it. (as long as it's not an older encode) That's a big difference I was missing; I was avoiding all those releases in that red section because I thought it was an impossibility. Why include the BD-FEL ones in the red section then? Seems like you could move those to the green list if we just stick to the proper encoder groups. |
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#993 | Link | |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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The list is for REMUX rip and I say:
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#994 | Link | |
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Join Date: Aug 2021
Location: Canada
Posts: 473
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3.0.6 Released: https://github.com/R3S3t9999/DoVi_Scripts/releases
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batch scripts, dolby vision processing, dovi_scripts |
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