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Old 14th November 2017, 05:09   #47161  |  Link
austinminton
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From what I gather about dolby vision, madvr would have to passthrough the metadata and not look to convert it into sdr. Its a black box and has licensing needs for decoding. I am also not sure if we will be able to use any of madvr's excellent processing algorithms on dolby vision encoded videos.

Ease of passthrough implementation is something I think only madshi can comment on.

It would be great to have dolby vision as more and more devices are becoming dolby vision capable and we have started getting proper (non-demo) material for it.
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Old 14th November 2017, 06:33   #47162  |  Link
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Like just about everything open standard will prevail, HDR10+ will drop Dolby Vision into near obscurity.
I'd rather see improvements to NGU, and sweet additions like antialiasing, temporal denoising, line darkening and Avisynth scripts with automatic profiling.
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Old 14th November 2017, 07:06   #47163  |  Link
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Originally Posted by ryrynz View Post
I'd rather see improvements to NGU, and sweet additions like antialiasing, temporal denoising, line darkening and Avisynth scripts with automatic profiling.
Do want!
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Old 14th November 2017, 07:29   #47164  |  Link
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When the average madVR user starts using Avisynth processing filters and madshi adds inbuilt madVR configs for them for ease of use, things are gonna go nuts.
Just using the GPU won't sometimes be enough, we're already seeing the best cards taxed to the limit with UHD content, this will allow people to get the most from their systems combined processing power.
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Old 14th November 2017, 09:57   #47165  |  Link
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I think for more power need SLI\CF support. Sometimes someone ask about it. madshi say on avsforum, he can implement multi-gpu support, but it very low in priority list. So...

Regarding avisynth, some video players like potplayer (and kmp mb, idk), support avs scripts. You can configure player profiles based on source fps, resolution, fourCC and more.
sr for bad eng

Last edited by thighhighs; 14th November 2017 at 10:45.
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Old 14th November 2017, 14:16   #47166  |  Link
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Quote:
Originally Posted by ryrynz View Post
Like just about everything open standard will prevail, HDR10+ will drop Dolby Vision into near obscurity.
I'd rather see improvements to NGU, and sweet additions like antialiasing, temporal denoising, line darkening and Avisynth scripts with automatic profiling.
Thats pure speculation from top to bottom for next year. Almost no TV even has HDR10+ support and there are no movies with it, nothing. It might and probably will fight Dolby Vision but who knows. And if there is no DV support for PC software there wont be for HDR10+ unless its a lot easier to implement only god knows why. But it would be nice to somehow passthrough DV to the DV capable tvs. On the other hand is that even possible to activate the tvs mediaplayer or DV engine via PC?
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Old 14th November 2017, 17:39   #47167  |  Link
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Originally Posted by d3rd3vil View Post
Thats pure speculation from top to bottom for next year. Almost no TV even has HDR10+ support and there are no movies with it, nothing. It might and probably will fight Dolby Vision but who knows. And if there is no DV support for PC software there wont be for HDR10+ unless its a lot easier to implement only god knows why. But it would be nice to somehow passthrough DV to the DV capable tvs. On the other hand is that even possible to activate the tvs mediaplayer or DV engine via PC?
Passthrough should work...but I haven't tried it myself as I don't have a TV that supports DV.
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Old 14th November 2017, 18:55   #47168  |  Link
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Dear Friends

What is the best player, which is working with madVR (from recommended list) in your opinion?

Sincerely
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Old 14th November 2017, 18:59   #47169  |  Link
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What is the best player, which is working with madVR (from recommended list) in your opinion?
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Old 14th November 2017, 19:28   #47170  |  Link
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id say MPC-HC and Potplayer..i prefeer MPC-HC...
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Old 14th November 2017, 20:12   #47171  |  Link
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mpc freezes after resume from pause

hi,
does anyone know how to avoid the video from freezing after pausing for a while and then trying to resume it?

doesn't happen on evr but whenever i pause a video when madvr is the renderer, playback does not resume or takes a few minutes for the video to continue, the audio plays but not the video straight away, most of the time i have to close mpc and reopen the video.
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Old 14th November 2017, 21:14   #47172  |  Link
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Quote:
Originally Posted by ryrynz View Post
I'd rather see improvements to NGU, and sweet additions like antialiasing, temporal denoising, line darkening and Avisynth scripts with automatic profiling.
Also D3D11VA deinterlacing? Pretty pleaaase?
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Old 14th November 2017, 21:40   #47173  |  Link
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So I upgraded from win 10 home to win 10 pro and now I have huge performance issues. Not sure if it is cause by madvr or some other component. If I enable svp+madvr it stutters with like 1 fps altho gpu and cpu are working properly. If I disable svp it is smooth (aka 24 fps) but render times per frame are still very high. If I use my mouse scroll to change loudness the framerate tanks again just because of the small volume overlay I assume.

Have already reinstalled mpc-hc.

It is not cause by gpu or cpu power settings or anything similar and with madvr I have not enabled anything just bicubic, so this is not the reason.
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Old 14th November 2017, 22:44   #47174  |  Link
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Have you reinstalled your GPU drivers too? How do you know it isn’t gpu power settings, already on adaptive?
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Old 15th November 2017, 02:45   #47175  |  Link
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i know peoples here probably using tvs as their main display,
but is there any viable 4khdr monitor thats already on the market, preferrably uinder 1500usd? and how does it performs in terms of movie and video playback compared to tvs?
i want to use madvr features fully
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Old 15th November 2017, 03:27   #47176  |  Link
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https://www.theverge.com/circuitbrea...r-4k-hdr-hdr10 might be worth a look.
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Old 15th November 2017, 11:28   #47177  |  Link
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Quote:
Originally Posted by madshi View Post
Quote:
Which version of AMD driver is currently the best for madVR / Win8.1 / HD7850?
I don't know.
I mean is there any known issue like http://bugs.madshi.net/view.php?id=431?
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Old 15th November 2017, 11:58   #47178  |  Link
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How does HDR10 work on UHD BD?

I started to fool around with UHD BD encodes (x265 10bit HDR10) on my 3dlut calibrated SD setup (see my signature below) and I realized that I don't understand a lot of things about how it works. (Please bear with me, I don't have the necessary hardware to play with them, and I didn't find any useful article about this.)

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The HDR10 mandatory layer plays just as well, and if you don't have a 12bits display or content handling ICtCp (which UHD Bluray doesn't) the differences are minimal.
...
Given the excellent quality of MadVR's dithering, I suspect the PQ difference from the higher bit depth (especially from a 1080p layer) would be close to nil. And dynamic metadata makes a bigger difference on low-end displays (those with a limited native contrast).
1. Data
Picture data is stored as bt.2020 (???) 10bit 4:2:0, or just or DCI-P3 in a bt.2020 container (???), resulting in a washed out picture.
- Wait, what????! Washed out picture?
- so, how does a true red become some greyish color when it's stored?
- I thought we have a truly increased color space compared to bt.709. Is it similar cheating as with those old anamorphic DVDs?
How does the static HDR10 metadata look like?
- is it stored in the beginning of the hevc video data?
- is it just couple of properties (bytes) about the mastering attributes and picture levels and "that's it"?

2. Processing
Splitter and decoder pass data to renderer (MadVR) for further processing:
- that probably happens in the "limited washed out pictures" world
- then either passthrough or HDR processing happens (for SD displays)
-- what does bt.2020 -> DCI-P3 means in OSD?

3. Displaying via passtrhough
Let's suppose that I understand how to calibrate an HDR display (that I don't ). Comparing to SD displays, how does the device behave with HDR10? (TVs, projectors)
- does it automatically increase/decrease "brightness" during playback? If so, can the device do it only for certain region or just the whole display? (especially if the questions about HDR10 in point 1. are true )
-- e.g. my SD display is set to ~120 nits, while can it happen that HDR display operates for a long time on 400nits????? If this is true (again) how can you calibrate it at all???

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Originally Posted by Manni View Post
The optional Dolby Vision layer is 1080p only, and the only thing it adds is 12bits over 10bits as well as dynamic metadata.
Really? Only 1080p of 12bit data? (I assume 4:2:0, again) That's definitely sound like cheating!

I think this amount of question is enough for starters Thanks!
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Last edited by chros; 15th November 2017 at 12:00.
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Old 15th November 2017, 12:11   #47179  |  Link
nevcairiel
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Quote:
Originally Posted by chros View Post
1. Data
Picture data is stored as bt.2020 (???) 10bit 4:2:0, or just or DCI-P3 in a bt.2020 container (???), resulting in a washed out picture.
- Wait, what????! Washed out picture?
- so, how does a true red become some greyish color when it's stored?
- I thought we have a truly increased color space compared to bt.709. Is it similar cheating as with those old anamorphic DVDs?
Its stored as BT.2020, 10-bit 4:2:0. The actually used colorspace could be smaller, and usually is in fact DCI-P3 for now. The HDR metadata tells you this.
The more important part about HDR however is that its stored using a different transfer function (ie. how to convert it to RGB), called PQ (Perceptual Quantizer, standardized as SMPTE ST 2084), and if you use the wrong one it looks washed out - for example, if a renderer doesn't support HDR, or the info has gone missing.

There is no "cheating", it just looks washed out when its being mis-interpreted by the renderer. You can't look at a YCbCr image without some sort of processing, and if you do that processing wrong, it won't make much sense.

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How does the static HDR10 metadata look like?
- is it stored in the beginning of the hevc video data?
- is it just couple of properties (bytes) about the mastering attributes and picture levels and "that's it"?
The HDR10 metadata is stored with every HEVC CVS (coded video sequence, what most people call "GOP"), so its repeated regularly in the bitstream. In a file format like MPEG-TS, as used on Blu-ray, this is important, because there are no global headers at the beginning of the file, or anything like that.

It doesn't contain a whole lot. It contains the color volume (ie. it specifies that the mastering was done in DCI-P3, for example), the white point, and the min/max luminance of the mastering display.

Quote:
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2. Processing
Splitter and decoder pass data to renderer (MadVR) for further processing:
- that probably happens in the "limited washed out pictures" world
- then either passthrough or HDR processing happens (for SD displays)
-- what does bt.2020 -> DCI-P3 means in OSD?
As explained above, there is no "washed out picture"

The data is passed as untouched YCbCr to madVR, which then converts it to RGB. Either for pass-through, or conversion to SDR.
BT.2020 -> DCI-P3 means that its using a BT.2020 container with DCI-P3 color volume, as described above.
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Old 15th November 2017, 13:28   #47180  |  Link
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Hello,

i bought a Nvidia 1050Ti for my 4k Beamer and madvr. But as i see, this card is not fast enough for this job. In this thread, the 1060 is recommended, but is this card really fast enough for high settings (also for 1080p and 720p upscaling to 4k)?

Thank you!
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