View Full Version : madVR - high quality video renderer (GPU assisted)
XTrojan
1st March 2016, 14:34
UHD Blurays started to ship worldwide today, AACS 2.0 seems to be confirmed :/.
It's sad Nvidia/AMD won't support HDR on older cards. It seems the only way to get HDR playback when AACS 2.0 is cracked is by DLNA in a m2ts or mp4 container, letting the TV do the work instead. Shame, as there's no TVs with algoritms near the level MadVR uses, and HDR seems to be restricted to mp4 & m2ts only(Samsung TVs only tested)
XMonarchY
1st March 2016, 17:08
It isn't possible to create 3D effect with madVR on TV's without the official 3D support, is it?
I recall there was some method where the image was just doubled on both sides and with glasses 3D effect could be achieved on just about any display.
FDisk80
1st March 2016, 17:12
It isn't possible to create 3D effect with madVR on TV's without the official 3D support, is it?
I recall there was some method where the image was just doubled on both sides and with glasses 3D effect could be achieved on just about any display.
No.....
Georgel
1st March 2016, 17:56
After getting a few HDR samples from a friendly person, I must say, for my display, LG Display LP173WF4-SPF1, setting HDR setting to 256 Nits provides the best result possible. I strongly believe that for most laptop displays and maybe for most normal computer displays it will behave the same, because setting 400nits in properties would result in an image that is too dark.
I will slightly modify my guide according to these findings.
aufkrawall
1st March 2016, 20:58
Could someone with a PCI Express 2.0 system (e.g. Sandy Bridge or any AMD desktop CPU) and a Radeon R9 290/390 (X or non-X) please test if 1080p 60fps image doubling works with NNEDI3 16 or 32 neurons?
If you don't have a display device which is bigger than 1080p, the Virtual Super Resolution feature in the driver might help to simulate a larger resolution.
I think this would finally clarify if the OpenCL copyback issue is gone with D3D11 interop.
Warner306
1st March 2016, 21:08
I am still confused by the decoding of HDR content. To my understanding, an UHD Blu-ray looks like this:
Base Layer - HDR10: (up to 1,000 nits, DCI-P3 -> Rec. 2020) 10-bit HEVC;
Enhancement Layer - Dolby Vision: (up to 4,000 nits, DCI-P3 -> Rec. 2020) 12-bit HDR.
HDR -> SDR conversion is possible, but what happens when LAV Video decodes the HDR10 stream? Does the HDR metadata float on top of the base layer master, or is the entire video stream remapped to the output gamut?
Warner306
1st March 2016, 21:12
Also, if an example color gamut (BT.709) is calibrated to 100 nits.
What would happen if I set HDR peak luminance to 1000 nits? The peaks would fall well outside the cube -- this would create a washed out image, correct?
In this case, would the recommendation be to set the display to 100 - 200 nits instead?
6233638
1st March 2016, 22:20
More on the anti-ringing changes, here are a couple of other test patterns:
Zone Plate A (http://abload.de/img/zone720-hardedge-ag4oig.png)
Zone Plate B (http://abload.de/img/zone720-hardedge-b6ko6r.png) (might be useful when tuning SSIM)
Looking at these with Catmull-Rom +AR +LL, comparing 0.89.18 (oldest build I had on my machine) and 0.90.13, I'm actually seeing a bit more ringing in the new builds.
Aliasing doesn't seem to be a problem though, just ringing.
Looking near the center of Zone Plate A:
0.89.18 (http://abload.de/img/0891814o57.png)
0.90.13 (http://abload.de/img/090135cr7m.png)
And the lower-left corner:
0.89.18 (http://abload.de/img/089184qp4e.png)
0.90.13 (http://abload.de/img/09013uloxr.png)
Patterns were scaled to 952x714 - just what the MPC-HC window scaled it to when snapped to the side of my 1080p screen.
Georgel
1st March 2016, 22:53
Also, if an example color gamut (BT.709) looks like this at 100 nits:
http://i1357.photobucket.com/albums/q760/Warner306/madVR%20Guide/3D-LUT-XYZ_zpsgkkeweoz.png
What would happen if I set HDR peak luminance to 1000 nits? The peaks would fall well outside the cube -- this would create a washed out image, correct?
In this case, would the recommendation be to set the display to 100 - 200 nits instead?
The higher the peak you set for HDR, the more dark the color is.
It is kinda, like, if you have an 1000 Nits display, HDR content would use the brightest setting to show pure light, while darker areas should not need the same luminance.
This is why, setting the peak for HDR lower will output lighter images. Because if you have a 200 nits display, that is the number for the highest luminance, so HDR content will look natural.
If you set peak at 100 nits, but you have 300 nits display, everything will look like you have an image with too high gamma settings. Everything will be too whitey.
huhn
1st March 2016, 23:08
I am still confused by the decoding of HDR content. To my understanding, an UHD Blu-ray looks like this:
Base Layer - HDR10: (up to 1,000 nits, DCI-P3 -> Rec. 2020) 10-bit HEVC;
Enhancement Layer - Dolby Vision: (up to 4,000 nits, DCI-P3 -> Rec. 2020) 12-bit HDR.
HDR -> SDR conversion is possible, but what happens when LAV Video decodes the HDR10 stream? Does the HDR metadata float on top of the base layer master, or is the entire video stream remapped to the output gamut?
the basic HDR10 can go up to 10000 nits. even the current test sample are already over 1000 nits. the brightest known consumer display is at about 700 nits and i'm not even sure it is a viable choice on that display.
you can ignore dolby vision it can't be used anyway.
a HDR stream is just decoded as it is and a stream with a max brightness is outputted and has a PQ gamma.
so to make it simply madVR get's an HDR stream with an info how bright it is.
After getting a few HDR samples from a friendly person, I must say, for my display, LG Display LP173WF4-SPF1, setting HDR setting to 256 Nits provides the best result possible. I strongly believe that for most laptop displays and maybe for most normal computer displays it will behave the same, because setting 400nits in properties would result in an image that is too dark.
I will slightly modify my guide according to these findings.
i highly doubt the AVG computer display is just 1-700 CR even an cheap TN computer display reaches 1-1000.
and even if the max brightness is 300 it doesn't mean it is used or even possible to use without ruining the image.
Warner306
1st March 2016, 23:18
The higher the peak you set for HDR, the more dark the color is.
It is kinda, like, if you have an 1000 Nits display, HDR content would use the brightest setting to show pure light, while darker areas should not need the same luminance.
This is why, setting the peak for HDR lower will output lighter images. Because if you have a 200 nits display, that is the number for the highest luminance, so HDR content will look natural.
If you set peak at 100 nits, but you have 300 nits display, everything will look like you have an image with too high gamma settings. Everything will be too whitey.
I see. But if my display is set to a peak brightness of 125 nits or so to be calibrated for BT.709, how far can I increase the brightness before the result becomes inaccurate? This is different than how bright the display can get if you crank up the backlight and contrast.
I think it is possible to have peaks outside this range, but how far outside this range?
XTrojan
2nd March 2016, 00:56
I see. But if my display is set to a peak brightness of 125 nits or so to be calibrated for BT.709, how far can I increase the brightness before the result becomes inaccurate? This is different than how bright the display can get if you crank up the backlight and contrast.
If you have a HDR movie, I would let the TV decode it instead of the PC & MadVR.
Warner306
2nd March 2016, 01:02
If you have a HDR movie, I would let the TV decode it instead of the PC & MadVR.
Passthrough of HDR metadata is not yet available in madVR.
Sparktank
2nd March 2016, 02:55
There's a thread on Slysoft, including the new name and the new release and about DVDFab.
http://forum.doom9.org/showthread.php?p=1759159#post1759159
foxyshadis
2nd March 2016, 04:10
disclaimer: Not madvr news
Then DON'T POST IT HERE
Warner306
2nd March 2016, 05:15
Then DON'T POST IT HERE
Ha, ha.
Sorry, I didn't know the grim reaper would come through here. I thought there would be a larger audience in this thread and only a post or two would result in replies.
ryrynz
2nd March 2016, 09:01
Sorry, I didn't know the grim reaper would come through here. I thought there would be a larger audience in this thread and only a post or two would result in replies.
Yeah, that almost never happens, hence why even though there was similar discussion over at the LAV thread why I didn't bother posting the same thing there.
One post can quickly derail a thread. Anyone paying attention would learn this news soon enough anyway..
I guess it's a good lesson about keeping things on topic.
kabal223
2nd March 2016, 18:31
Hi guys, I have a problem with madvr playing 23.976 on every 60hz display I have, its like the normal (and fine with me) judder effect but much more worse, its totally choppy, I mean, it looks like something is wrong with the 3:2 pulldown because is more "jumpy" than normal. This doest happen with others renders, only with madvr, and also it happens on every player/setup Ive tested on my house (using madvr of course). The only way to fix this is turning on smooth motion, but I dont like that effect because in 60hz I can see some ghosting on some scenes.
Please help! How can I play 60hz on madvr? (I dont like neither 24hz or 48hz because I totally hate flicker)
Thank you so much.
JarrettH
2nd March 2016, 18:48
Maybe post your stats window with ctrl+j (windowed overlay might need to be on for the screenshot)
kabal223
2nd March 2016, 18:55
Ok, I will do that when I get home, thanks!
Warner306
2nd March 2016, 21:27
Hi guys, I have a problem with madvr playing 23.976 on every 60hz display I have, its like the normal (and fine with me) judder effect but much more worse, its totally choppy, I mean, it looks like something is wrong with the 3:2 pulldown because is more "jumpy" than normal. This doest happen with others renders, only with madvr, and also it happens on every player/setup Ive tested on my house (using madvr of course). The only way to fix this is turning on smooth motion, but I dont like that effect because in 60hz I can see some ghosting on some scenes.
Please help! How can I play 60hz on madvr? (I dont like neither 24hz or 48hz because I totally hate flicker)
Thank you so much.
I've seen bitstreaming with clock correction using ReClock cause judder problems.
If other renderers are fine, it sounds like your madVR settings are at fault. Your rendering stats would be a necessary first step.
SweetLow
2nd March 2016, 21:40
madVR v0.90.13 released
* added "use alternative glitch handling mode" option for D3D11 presentation
This fix very old bug with D3D11@Intel HD4000/HD2500@Win7 - on second (and in more rare cases - on first/only) monitor exit from FS Exclusive (with video played) start massive frame repeats/drops for seconds(5-20) sometimes .
Thanks.
kabal223
2nd March 2016, 23:30
Here are the stats:
http://i.imgur.com/7rGI53U.jpg
Thanks for the help guys!
baii
3rd March 2016, 02:44
I have amd fury. Any crimson driver + pot player 32 bit is instant madvr crash for me. Seem to be fine with mpc hc. So anything I can pinpoint to?
I sent the report using the madvr interface.
seem to be fine with 64bit pot player as well.
Warner306
3rd March 2016, 04:53
Here are the stats:
http://i.imgur.com/7rGI53U.jpg
Thanks for the help guys!
I am by no means an expert at diagnosing issues via rendering stats.
With that said, have you tried using processing -> zoom control -> disable image scaling? It looks like your sample video is upscaled slightly, even though it is 1080p, which may cause some issues.
Also, is the present queue filling during playback? And is your average rendering time + present time under the movie frame interval (41.71 ms)? In this case, you should have no dropped frames or presentation glitches during playback.
If you answer yes to all of the above, I wonder if the sharper image is causing artifacts. madVR can produce a very sharp (even oversharpened) image, which can cause motion artifacts. Try disabling all image enhancements and upscaling refinement settings.
Beyond that, what you are seeing might be normal, but I'm not the person to ask.
huhn
3rd March 2016, 06:00
Here are the stats:
http://i.imgur.com/7rGI53U.jpg
Thanks for the help guys!
is there a reason you have changed the flush settings?
Georgel
3rd March 2016, 08:44
Here are the stats:
http://i.imgur.com/7rGI53U.jpg
Thanks for the help guys!
You have 25 dropped frames. Maybe the missing frames are what makes motion seems to stutter for you?
kabal223
3rd March 2016, 09:12
I am by no means an expert at diagnosing issues via rendering stats.
With that said, have you tried using processing -> zoom control -> disable image scaling? It looks like your sample video is upscaled slightly, even though it is 1080p, which may cause some issues.
Also, is the present queue filling during playback? And is your average rendering time + present time under the movie frame interval (41.71 ms)? In this case, you should have no dropped frames or presentation glitches during playback.
If you answer yes to all of the above, I wonder if the sharper image is causing artifacts. madVR can produce a very sharp (even oversharpened) image, which can cause motion artifacts. Try disabling all image enhancements and upscaling refinement settings.
Beyond that, what you are seeing might be normal, but I'm not the person to ask.
Ok I will see and try all of that, thanks... But whats funny is if I enable smooth motion all the jerkiness goes away. What I also tried was changing the dithering options, if I put ordered dithering in the LAV filter the problem goes away in the 720p videos, but it remains in the 1080p ones. It is more obvious in panning scenes like the one in the beginning of The Martian.
Again, thanks, I will try that later today and I will come back with the results.
is there a reason you have changed the flush settings?
Yeah, maybe trying to fix the problem days ago I changed some options but forgot to change some of those to the default again.
Thanks!
You have 25 dropped frames. Maybe the missing frames are what makes motion seems to stutter for you?
I think the missing frames error showed up when I paused the video, before there were only one frame missing.
Thanks mate.
huhn
3rd March 2016, 09:17
Ok I will see and try all of that, thanks... But whats funny is if I enable smooth motion all the jerkiness goes away. What I also tried was changing the dithering options, if I put ordered dithering in the LAV filter the problem goes away in the 720p videos, but it remains in the 1080p ones. It is more obvious in panning scenes like the one in the beginning of The Martian.
this doesn't make any sense because this part of lavfilter isn't used with default settings. did you changed the lavfilter settings too?
Yeah, maybe trying to fix the problem days ago I changed some options but forgot to change some of those to the default again.
think about a screen with default madVR settings.
I think the missing frames error showed up when I paused the video, before there were only one frame missing.
they usually come from starting and resizing the video and are pointless as long as they don't rise while playback.
kabal223
3rd March 2016, 11:25
You are totally right about the LAV dithering option because after some testing the problem is still there...
Something I see, and might be the problem in here, is the clock deviation... do you guys think that there is the problem? Because when I start the videos (in a panning scene) everything is fluid (with the judder of course) but after the clock deviation shows in the stats the choppy movement also shows in the panning scenes (I cant notice that on other scenes, only if I look for it)
Thanks for the help!
CarlosCaco
3rd March 2016, 15:31
You are totally right about the LAV dithering option because after some testing the problem is still there...
Something I see, and might be the problem in here, is the clock deviation... do you guys think that there is the problem? Because when I start the videos (in a panning scene) everything is fluid (with the judder of course) but after the clock deviation shows in the stats the choppy movement also shows in the panning scenes (I cant notice that on other scenes, only if I look for it)
Thanks for the help!
the flush options can cause this problem...
you tried to alter something o gpu control panel?
what gpu are you uing?
kabal223
3rd March 2016, 19:18
Which are the best flush options?
No, I didnt change anything on my gpu options, its a geforce660
Thanks!
huhn
3rd March 2016, 19:37
Which are the best flush options?
No, I didnt change anything on my gpu options, its a geforce660
Thanks!
default.
Warner306
3rd March 2016, 22:09
You are totally right about the LAV dithering option because after some testing the problem is still there...
Something I see, and might be the problem in here, is the clock deviation... do you guys think that there is the problem? Because when I start the videos (in a panning scene) everything is fluid (with the judder of course) but after the clock deviation shows in the stats the choppy movement also shows in the panning scenes (I cant notice that on other scenes, only if I look for it)
Thanks for the help!
You might have to reset your madVR settings in the installation folder. What audio renderer are you using? Did you try turning bitstreaming on and off?
aufkrawall
3rd March 2016, 22:17
Sigmoidal light seems to reduce aliasing with Jinc AR.
Sigmoidal light:
http://abload.de/thumb/sigrssdt.png (http://abload.de/image.php?img=sigrssdt.png)
Gamma light:
http://abload.de/thumb/gl63s7n.png (http://abload.de/image.php?img=gl63s7n.png)
Original:
http://www.royalgrass.de/wp-content/uploads/2014/11/synthetic-grass-lawn.jpg
So, maybe it can be recommended in general for upscaling?
JarrettH
3rd March 2016, 22:18
Default flush options are best now, but you could experiment with changing the GPU/CPU queue to 8/4
Unr3aL
4th March 2016, 00:44
Sigmoidal light seems to reduce aliasing with Jinc AR.
Sigmoidal light:
http://abload.de/thumb/sigrssdt.png (http://abload.de/image.php?img=sigrssdt.png)
Gamma light:
http://abload.de/thumb/gl63s7n.png (http://abload.de/image.php?img=gl63s7n.png)
Original:
http://www.royalgrass.de/wp-content/uploads/2014/11/synthetic-grass-lawn.jpg
So, maybe it can be recommended in general for upscaling?
It seems you uploaded the same picture twice there.
Even photoshop diff doesn't show any difference between the two. (zero)
It is weird that they have a different filesize though...
Greetz, Unr3aL
aufkrawall
4th March 2016, 00:53
It seems you uploaded the same picture twice there.
You probably rather downloaded the same picture twice. ;)
I checked the image for different pixels (I downloaded them from the image hoster as well), each red pixel differs:
http://abload.de/thumb/diffh9suu.png (http://abload.de/image.php?img=diffh9suu.png)
AngelGraves13
4th March 2016, 04:28
madshi, any plans on adding a "black level correction" checkbox?
I'm about halfway through Peaky Blinders and still have no idea why the blu-ray is so bright. Blacks are almost gray.
Would love an option to correct these mastering issues. DVDs seem to suffer from it more than blu-rays.
kabal223
4th March 2016, 06:22
Well, after some serious testing the only fix for my problem is using a 58hz refresh rate, now the playback is almost perfect, thank you guys!
Warner306
4th March 2016, 08:43
Well, after some serious testing the only fix for my problem is using a 58hz refresh rate, now the playback is almost perfect, thank you guys!
Really, at 58 Hz? I would have thought that would make it worse.
kabal223
4th March 2016, 09:18
Me too Warner, but no, everything is perfect now, maybe it compensate with the clock deviation or something like that, because right now the clock deviation is like 0.000x% and before was much higher. Im really happy now, Ive been testing for like two hours with movies with a lot of panning (like the martian) and every was really smooth, with no visible dropped frames or choppy movement, and the best, no flicker!! (I hate flicker). Ive been testing on three different setups (a tv, a projector and a pc screen) and Ive got the same result on all of them.
Thank you so much!
Sunset1982
4th March 2016, 11:08
I've had some problems starting movies the last two days. When I first start a file the screen gets black and my tv shows no connection. When I press ctrl +alt + del desktop comes back and mpc-hc and madvr is closed. When I try to start the file again, it works flawless.
Someone had same problems?
Don't know if it is madvr90.13 which I installed these days or the windows 10 Update which was installed 3 days ago... I'll test with older madvr today.
Next thing I've seen these days with madvr 90.13 and the new glitch handling method activated was that during playback my screen gets dark and back again, showing "exclusive mode failed" message and then movie goes on playing fine. Don't know if its the new madvr option, but after disabling this option everything worked fine except for the other problem above.
ryrynz
4th March 2016, 11:27
I've had some problems starting movies the last two days.
Do you use NNEDI3? It's likely related to that, downgrade to 0.90.11 until 0.90.14 comes out.
kalston
4th March 2016, 11:46
Sigmoidal light seems to reduce aliasing with Jinc AR.
Sigmoidal light:
http://abload.de/thumb/sigrssdt.png (http://abload.de/image.php?img=sigrssdt.png)
Gamma light:
http://abload.de/thumb/gl63s7n.png (http://abload.de/image.php?img=gl63s7n.png)
Original:
http://www.royalgrass.de/wp-content/uploads/2014/11/synthetic-grass-lawn.jpg
So, maybe it can be recommended in general for upscaling?
Nice find, thanks!
Took me a while to notice but sigmoidal looks a bit "cleaner" to me now. Very interesting as 1080p>1440p with Jinc AR is 99% of the upscaling I do so this sounds like something worth checking out when I get back home. Need to test this with other samples.
Sunset1982
4th March 2016, 12:00
Do you use NNEDI3? It's likely related to that, downgrade to 0.90.11 until 0.90.14 comes out.
that is possible, cause I changed some options in my upscaling profiles. Will test it out...
madshi
4th March 2016, 12:09
Updated to the newer version and after a while with no problems it gave me the same error.
I used the debug mode to create the log, it created a 69MB file and i compressed it to 3mb and uploaded to mega.
Steps i did, opened an episode, went fullscreen, skipped 1, skipped 2 and it gave me the black screen i said earlier, hit esc to exit fullscreen and closed mpc.
this is the link:
https://mega.nz/#!tAIVEIoL!YjThiXXYoD9DNx9BRXmbgsAn2dYTS2yv0isJBuGLuGU
Finally had a look at this. According to your log the decoder is not sending any frames when the problem occurs. I don't know why. It doesn't look like a madVR bug to me, but it's hard to be sure.
Madshi, this is till happening on my 960 using latest drivers with similar resolution content with .13. Tried earlier drivers, still crashes.
Occurs when I play this (https://mega.nz/#!rI5BRRqD) and have NNEDI3 enabled (doubling or quadrupling) and downscale into a window. .10 doesn't crash.
Last weekend I was able to reproduce it, but today I can't. Can you please upload your settings.bin, and also make a screenshot of the OSD so that I can see which exact resolution you're playing at, and which scaling algos madVR lists etc?
Could you make madVR not render frames, or render at extremely low framerates (1 fps), or at 1x1 resolution when the player is minimized?
I'll add it to my to do list, but with a low priority.
Tested. Don't see any difference at all. Present Queue drops the same with or without this option enabled when the seek bar is on screen in FSE mode.
As was said before, the present queue dropping with the seek bar on is INTENTIONAL to speed up GUI reaction times. That's not what the new option is about. Some users had low present queue fill state without the seek bar visible, when using 10bit output. The new option may help with that.
It's been discussed by a few of us here, but no one seems to be able to track this down. Since v0.90.11 playback results in a black screen for me. I can pull up PotPlayer's OSD and madVR's OSD... sound plays and so does the video, except that the video is just black. Here is the screen shots which clearly shows something is broken. First shot is of v0.90.10 and the second is v0.90.13 (11 & 12 were the same)
Can you please upload your settings.bin so that I can try to reproduce the problem on my PC?
Well I sort of figured out what the problem with Nvidia 3d vision was:
I normally keep the monitor (asus pg278q) at 120hz
At 120Hz, 3d playback is enabled but I still see double with the glasses
At 60Hz, playback works. Is there a way to automatically switch to 60Hz when a 3D file is played?
...nevermind, the above only works occassionally
Switching to any resolution with the windows display properties option while the video is playing makes 3d work in windowed mode but causes intermittent crashing of MPC-HC when changing to fullscreen. Using the nvidia control panel to change anything seems less reliable. Seems more Nvidia bugs.
After some more testing, this only worked for few tries then stopped as well. After turning off stereoscopic 3d in the windows display properties and back on it started working again. no idea why the behavior is so inconsistent.
But the key to get it working was changing to a different 3D resolution or frequency while the video was already playing. After stopping the video and closing MPC-HC, and reopening the video, 3D again does not work until changing the resolution or frequency. Changing the resolution with the windows 10 display properties seems like the most reliable method.
Have you tried letting madVR enable/disable OS 3D support when you play a 3D vs 2D movie?
I tried out the alternative glitch option on d3d11 playback (8 bit). My queues are now able to go above 2-3/3. (However, setting them to 16 will max them out at 14-15/15 for some reason).
I get presentation glitches "more", but only in situations that I'm supposed to have them, like when I empty the present queue on right clicking out of FSE, toggling full screen and FSE, seeking, etc. In normal playback, I don't get any extra presentation glitches.
I'm experiencing a/v desync right from the beginning of the playback.
Is the desync constant or varying? Are you sure that the new option causes the desync? You definitely don't have it when using the old option? What happens if you use D3D9 presentation? Do you have the same AV sync as the new D3D11 option, or the old?
Do you have the "render frames in advance" (or however it was named) NVidia GPU control panel option set to "application controlled"?
2) I really like it! I liked "sharpen edges" but there was a little bit of ringing sometimes that stopped me to always use it. Now it's very clean, I haven't seen any problems with it and I'm considering to use it with low values (and it's a big step for me because like I've said, I don't like sharpening filters).
3) Hard to tell... LL on is closer to the source (less bright with high sharpening values) but it generates artefacts around letters, I don't think it's ringing.
I will post screenshots ASAP but I still prefer LL off for now.
Glad to hear that! Looking forward to your screenshots.
For me, with Nvidia default drivers, GTX860M laptop, I cannot use Direct3D11 without getting a mpc-hc crash. Everything works fine if I do not try to use Direct3D11
Attaching stuff to this forum doesn't work.
I am still confused by the decoding of HDR content. To my understanding, an UHD Blu-ray looks like this:
Base Layer - HDR10: (up to 1,000 nits, DCI-P3 -> Rec. 2020) 10-bit HEVC;
Enhancement Layer - Dolby Vision: (up to 4,000 nits, DCI-P3 -> Rec. 2020) 12-bit HDR.
HDR -> SDR conversion is possible, but what happens when LAV Video decodes the HDR10 stream? Does the HDR metadata float on top of the base layer master, or is the entire video stream remapped to the output gamut?
The decoder outputs the video as it was compressed. Which for HDR10 means it's usually 10bit with a PQ transfer function. The metadata is totally separate and is for the whole stream, not per frame. Remapping is done by madVR according to your madVR settings, not by LAV.
The only spec difference Dolby Vision brings is 12bit instead of 10bit. Dolby Vision doesn't have different gamut or peak luminance values.
Also, if an example color gamut (BT.709) is calibrated to 100 nits.
What would happen if I set HDR peak luminance to 1000 nits? The peaks would fall well outside the cube -- this would create a washed out image, correct?
In this case, would the recommendation be to set the display to 100 - 200 nits instead?
The higher you set the peak luminance value in the madVR settings, the darker the image gets, because madVR expects your high display luminance to make up for the darker image. If you set th peak luminance value in madVR much higher than it really is, you'll get a very dark image. Generally, don't worry too much about these things. Just calibrate your display as you would usually do (maybe optimize for more brightness, though), then try different peak luminance values in the madVR settings to see which looks best to your eyes.
More on the anti-ringing changes, here are a couple of other test patterns:
Zone Plate A (http://abload.de/img/zone720-hardedge-ag4oig.png)
Zone Plate B (http://abload.de/img/zone720-hardedge-b6ko6r.png) (might be useful when tuning SSIM)
Looking at these with Catmull-Rom +AR +LL, comparing 0.89.18 (oldest build I had on my machine) and 0.90.13, I'm actually seeing a bit more ringing in the new builds.
Aliasing doesn't seem to be a problem though, just ringing.
Looking near the center of Zone Plate A:
0.89.18 (http://abload.de/img/0891814o57.png)
0.90.13 (http://abload.de/img/090135cr7m.png)
And the lower-left corner:
0.89.18 (http://abload.de/img/089184qp4e.png)
0.90.13 (http://abload.de/img/09013uloxr.png)
Patterns were scaled to 952x714 - just what the MPC-HC window scaled it to when snapped to the side of my 1080p screen.
Thanks! Will have a look at these...
If you have a HDR movie, I would let the TV decode it instead of the PC & MadVR.
I wouldn't. The TV will probably have much lower remapping algorithms than madVR.
Hi guys, I have a problem with madvr playing 23.976 on every 60hz display I have, its like the normal (and fine with me) judder effect but much more worse, its totally choppy, I mean, it looks like something is wrong with the 3:2 pulldown because is more "jumpy" than normal. This doest happen with others renders, only with madvr, and also it happens on every player/setup Ive tested on my house (using madvr of course). The only way to fix this is turning on smooth motion, but I dont like that effect because in 60hz I can see some ghosting on some scenes.
Please help! How can I play 60hz on madvr? (I dont like neither 24hz or 48hz because I totally hate flicker)
Can your TV do any higher than 60Hz? Ideal would be 72Hz.
madVR's pulldown playback (23fps at 60Hz) isn't really very optimized atm, it's not as smooth as it could be. 23fps at 60Hz is really what smooth motion FRC was mode for. If you hate the smooth motion FRC look, then your best bet is to try to set your TV to a simple multiply of the video framerate, which would be 47.952Hz or 71.928Hz.
This fix very old bug with D3D11@Intel HD4000/HD2500@Win7 - on second (and in more rare cases - on first/only) monitor exit from FS Exclusive (with video played) start massive frame repeats/drops for seconds(5-20) sometimes .
Good to hear! Do you notice any audio/video desync when using the new option?
Sigmoidal light seems to reduce aliasing with Jinc AR.
In some scenes it does. But if there's a lot of visible ringing artifacts, it sometimes makes things worse. Which is why I'm not sure I should recommend it.
madshi, any plans on adding a "black level correction" checkbox?
I'm about halfway through Peaky Blinders and still have no idea why the blu-ray is so bright. Blacks are almost gray.
Would love an option to correct these mastering issues. DVDs seem to suffer from it more than blu-rays.
You can press Ctrl+Alt+Shift+I to switch input black levels through various different values. You can also use file name tags (e.g. "levels=pc" or "levels=double" or "levels=triple") to make madVR always use a specific setting for one specific file.
I've had some problems starting movies the last two days. When I first start a file the screen gets black and my tv shows no connection. When I press ctrl +alt + del desktop comes back and mpc-hc and madvr is closed. When I try to start the file again, it works flawless.
If your TV shows no connection that sounds as if your GPU is switching to a display mode which is not supported by your TV. Are you using custom resolutions? Are you using the display mode switcher? Try removing both, as a test.
kabal223
4th March 2016, 15:27
Can your TV do any higher than 60Hz? Ideal would be 72Hz.
madVR's pulldown playback (23fps at 60Hz) isn't really very optimized atm, it's not as smooth as it could be. 23fps at 60Hz is really what smooth motion FRC was mode for. If you hate the smooth motion FRC look, then your best bet is to try to set your TV to a simple multiply of the video framerate, which would be 47.952Hz or 71.928Hz.
No, sorry, its a projector and the top is 60hz. For now it seems that 58hz is doing the trick for me, everything is working fine with that refresh rate, I dont know how, but it works.
Thank you so much Madshi.
SweetLow
4th March 2016, 16:41
Good to hear! Do you notice any audio/video desync when using the new option?
When i test - no, all is OK. I don't view long movies since this testing (some other interests :rolleyes:), but my children don't complain :)
har3inger
4th March 2016, 17:49
Is the desync constant or varying? Are you sure that the new option causes the desync? You definitely don't have it when using the old option? What happens if you use D3D9 presentation? Do you have the same AV sync as the new D3D11 option, or the old?
Do you have the "render frames in advance" (or however it was named) NVidia GPU control panel option set to "application controlled"?
The desync is subtle and constant, but I didn't have time to let the video go longer to see if it's better or worse. I'm pretty sure the new option is responsible. I turn it on and increase present frames, I get desync. I turn it off and go back to present 3 frames in advance, it goes away. I've only tried 2 video sources with the new option (first time I didn't notice desync with car sound effects and overdubbed narration in Donnie Darko, second time I did by watching lip movements vs voice timing in an episode of House) I haven't used D3D9 presentation for a long time, will try later. Last time I used it it gave me hundreds of presentation glitches per minute but with no or very few dropped frames.
I'm on ATI. The Crimson driver control panel doesn't allow manual tweaking of flip queue size. I have no idea what it is at default. My MPC-HC is renamed, so it shouldn't be triggering any per-app settings in the driver.
When I have a moment I'll troubleshoot this a bit more and let you know what happens.
I've been perfectly happy with 2-3 frames for the present queue with "present a new frame per vsync" unchecked (and 24 GPU 128 cpu) for quite some time now. FRC seems to work just fine even with a small present queue. The stats show it's constantly between 1-3 and I never get presentation glitches or dropped frames (though this could be misreporting). I've kept it this low because the GPU queue drops to a max of 2/24 when I increase present queue to 4 or above, and the present queue fails to fill higher than 4 regardless of how high I set it.
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