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Old 7th June 2019, 22:46   #56521  |  Link
jkauff
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I have the BOXNUC8i5BEK NUC, and I found the iGPU totally unsatisfactory for madVR use. My 4K TV actually does a better job with HDR10 content than the current official build of madVR, and it supports Dolby Vision. Of course, madVR can't be beat for upscaling everything else, so I ended up buying an eGPU enclosure with a Thunderbolt 3 interface (Razer Core X) and installed the GTX 1080 I had in my desktop. I spent more money than I intended, but now I have the best of both worlds in my living room.

Last edited by jkauff; 7th June 2019 at 22:49.
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Old 8th June 2019, 06:31   #56522  |  Link
niczoom
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I tried everything else, and even manually editing EDID to force 4K at all times didn't fix it. My theory is that windows loses connection to the TV/Receiver completely for a split second while HDR is being disabled. When loss of HDMI handshake occurs windows briefly goes into 480p, which screws up all your window sizes and positions. Honestly, why windows still can't remember window sizes based on resolution is beyond me.
I'm having the same windows resizing issues. Anyone else having issues with windows resizing after watching HDR (madvr) content?
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Old 8th June 2019, 12:59   #56523  |  Link
Warner306
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Are you talking about the media front-end used or the media player?
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Old 10th June 2019, 23:56   #56524  |  Link
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This may have been asked before many times. Is thre any disadvanatge of using DXVA native instead of copyback in LAV filters? Thank you!
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Old 11th June 2019, 01:29   #56525  |  Link
Warner306
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The chroma information isn't presented correctly. D3D11 Native is a better choice for that reason.
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Old 11th June 2019, 03:00   #56526  |  Link
alps006
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Thank you!
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Originally Posted by Warner306 View Post
The chroma information isn't presented correctly. D3D11 Native is a better choice for that reason.
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Old 12th June 2019, 17:54   #56527  |  Link
brad86
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Hi guys, been lurking for years but I finally have a question to ask so I decided on signing up.
I have been tinkering with MadVR's HDR to SDR for a few days now, and for the most part everything is looking great, but I have noticed a few little issues that I would like to fix if at all possible.

A couple of examples;

Evil Dead 2. The reds are bleeding into the white area of Ash's teeth and eyeball.



Die Hard. The reds in this scene really overblown compared to most other areas in the film. There is patchiness on the right side of Holly's face and neck.



This isn't just limited to my PotPlayer/MadVR setup. It also happens with the all-in-one MPV Player.

Is this an fixable on my end, or am I expecting too much from HDR to SDR conversion.
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Old 12th June 2019, 21:58   #56528  |  Link
Alexkral
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Is this an fixable on my end, or am I expecting too much from HDR to SDR conversion.
The first screenshot is exactly the same in the SDR version. This kind of thing should be checked before blaming the conversion to SDR. As for the problems of oversaturation, there's not much you can do ATM apart from adjusting the color settings on your TV.
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Old 13th June 2019, 02:37   #56529  |  Link
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The first screenshot is exactly the same in the SDR version. This kind of thing should be checked before blaming the conversion to SDR. As for the problems of oversaturation, there's not much you can do ATM apart from adjusting the color settings on your TV.
It's not a scene with natural skin tone, so I mean.

Based on what reference are we to say it's Over-saturated ?
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Old 13th June 2019, 04:54   #56530  |  Link
an3k
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Hi everybody,

after I finally got some UHD HDR content (that I cannot play because no HDR displays) I somehow got into experimenting instead of just using x265 / madVR and tried to implement mastering display coloring volume metadata into x264 (since the H.264 spec supports it). Even with some help from x264dev on freenode I wasn't able since I can't do C. In the end someone else wrote a patch with the missing bits.

x264 can do HDR now ... woohoo

Sadly madVR doesn't enable tonemapping as it does for x264 HDR content. I guess it's just not enabled for h264 content?
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Old 13th June 2019, 05:04   #56531  |  Link
Alexkral
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Hi everybody,

after I finally got some UHD HDR content (that I cannot play because no HDR displays) I somehow got into experimenting instead of just using x265 / madVR and tried to implement mastering display coloring volume metadata into x264 (since the H.264 spec supports it). Even with some help from x264dev on freenode I wasn't able since I can't do C. In the end someone else wrote a patch with the missing bits.

x264 can do HDR now ... woohoo

Sadly madVR doesn't enable tonemapping as it does for x264 HDR content. I guess it's just not enabled for h264 content?
You can use the hdr=on or transfer=hdr tags for that.
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Old 13th June 2019, 05:04   #56532  |  Link
huhn
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madVR worked out of the box with VP9 HDR so is the format the same as x265 or did they change something?

my first look here would be at lav filter is it even shipped with that patch?
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Old 13th June 2019, 05:42   #56533  |  Link
an3k
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madVR worked out of the box with VP9 HDR so is the format the same as x265 or did they change something?

my first look here would be at lav filter is it even shipped with that patch?
Does the filter / decoder need to be aware of this? The HDR info is inside the bitstream as a SEI.

The patch is currently only on pastebin so basically nothing knows about it /is patched yet.
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Old 13th June 2019, 05:47   #56534  |  Link
huhn
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i'm not a developer for this but the meta data has to reach madVR.
if the source filter needs to repack the meta data for directshow so the renderer can see it you will need the patch.

lavfilter may not even look for the meta data for obvious reasons.

for VP9 a change in lavfilter was needed to get the meta data to madVR. madVR on the other side didn't care and just worked as soon as it got the meta data.

just wait for nev on this he should know. no need to speculate more on this.
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Old 13th June 2019, 06:06   #56535  |  Link
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Hi, maybe the link to the patch can help?

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Old 13th June 2019, 06:18   #56536  |  Link
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Quote:
Originally Posted by huhn View Post
i'm not a developer for this but the meta data has to reach madVR.
if the source filter needs to repack the meta data for directshow so the renderer can see it you will need the patch.

lavfilter may not even look for the meta data for obvious reasons.

for VP9 a change in lavfilter was needed to get the meta data to madVR. madVR on the other side didn't care and just worked as soon as it got the meta data.

just wait for nev on this he should know. no need to speculate more on this.
Yes, that makes sense. Didn't thought about it but just thought it's just passed-through. Thanks for the insight

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Hi, maybe the link to the patch can help?

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Sorry, absolutely. Here it is https://pastebin.com/nRcBrM3M

Here's the output of h264_parse mpeg4ip version 1.5.0.1 of a file (HEVC HDR to x264 HDR) encoded with a patched x264 https://pastebin.com/cKtUbKUm

Last edited by an3k; 13th June 2019 at 06:26.
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Old 13th June 2019, 06:26   #56537  |  Link
Sebastiii
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Thanks

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Old 13th June 2019, 12:55   #56538  |  Link
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Dear Friends

I own Lenovo Ideapad 320 i3-7100u with iGPU Intel 620 and GPU GeForce 940MX. I have tried to watch .mkv remux of Gladiator 2160p 23.976 HDR 10bit, but it's not smooth. Rendering is below 41.71ms, but there are lots of dropped frames. Notebook is conntected to my monitor LG 27UK600-W 4K HDR via HDMI cables via Onkyo TX-NR686 (HDMI 2.0b HDCP 2.2).

MPC-HC 1.8.6, madVR 0.92.17, LAV Filters 0.74.1

NVIDIA Control Panel set to maximum performance of 940MX, Windows 10 1809 also 940MX.
LAV Filters - Video Decoder - D3D11 and 940MX

This notebook hardware is to weak to have no frame drops or I am doing something wrong?

Thank you in advance for your help and replies.

Sincerely
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Old 13th June 2019, 13:29   #56539  |  Link
Grimsdyke
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Try D3D11 - Automatic/Native in LAV VideoDecoder and from what I read here 'maximum performance' is not recommend. Try 'balanced'.
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Old 13th June 2019, 14:42   #56540  |  Link
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940MX is used for decoding (see settings window of active LAV Video instance)? According to Wikipedia 940MX is only VP6/Feature Set E, i.e. no good HEVC 10 bit decoding. Or are there more variants? i3-7100u (Kaby Lake) can do it, though.

Next thing is rendering via madvr. Create an empty folder called "ShowRenderSteps" in the madvr folder. Activate madVR OSD (ctrl+j), make a screenshot and post it here.
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