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Old 26th July 2018, 18:41   #51821  |  Link
pirlouy
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Originally Posted by Asmodian View Post
I get a very nice ~1 day between drops/repeats estimated (with no drops/repeats during playback) with an Nvidia GPU, drivers 398.36, Windows 10, and a custom resolution (added and tuned by madVR) for my LG C7. It is possible on something besides Intel.
I'm jealous !
With the same driver, I can't create custom resolutions, either with madVR or nVidia tool. It doesn't let me add custom resolution because it considers I already have a 23 & 24 resolution.
If I delete 24 in my EDID, I can add a custom resolution, but only 23 and not 24 (since the 23 is considered a 24, old bug). So in case I had a 24fps video, I wouldn't be able to play it correctly.
So I gave up and use nVidia new standard 23.976Hz (resulting in 1 frame repeat every 11-12 minutes).
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Old 26th July 2018, 20:01   #51822  |  Link
veggav
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After reading you guys talking about the 23p situation on nvidia I tried to see if I could fix it on my end.

I'm on driver 398.36 and I'm using
Horizontal: 1276 + 88 + 416
Vertical 8 + 10 + 60
pixel clock 301.58 mhz.

In the OSD I get 23.97670hz but the composition rate changed to 23.978 instead of sticking to 23.976xx

Also in the optimized timming parameters I get 1 frame repeate every 4:40 minutes and it seems it doesn't matter that timing or pixel clock I choose.
Every time I change the current timing it shows the same 4:40 minutes, even if I use one of the optimized pixel clock that show no frame drops/repeats after a reboot it shows 1 frame repate every 4:40 minutes.

Also, I'm trying full screen exclusive now and while in FSE I get composition rate 60hz? Is that a bug or something?
The display is at 23.976

Last edited by veggav; 26th July 2018 at 20:17.
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Old 26th July 2018, 20:10   #51823  |  Link
arcspin
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Originally Posted by veggav View Post

In the OSD I get 23.97670hz but the composition rate changed to 23.978 instead of sticking to 23.976xx
Hi,
Can someone please explain what the composition rate is and why it is different from the osd refresh rate.

(I asked this question earlier in this thread but I think my question got lost in a couple of other questions I had in the same post.)

Cheers,
Peter

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Old 26th July 2018, 20:56   #51824  |  Link
veggav
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Hi,
Can someone please explain what the composition rate is and why it is different from the osd refresh rate.

(I asked this question earlier in this thread but I think my question got lost in a couple of other questions I had in the same post.)

Cheers,
Peter

Sent from my SM-N950F using Tapatalk
Yeah, I actually would like to know this myself.
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Old 26th July 2018, 21:33   #51825  |  Link
Asmodian
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The composition rate is the Desktop Window Manager which controls when screen updates actually happen. It is pretty good in Windows 10 (though Windows 8.1 is the best one according to madshi), and it is required for proper playback.
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Last edited by Asmodian; 26th July 2018 at 21:55.
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Old 26th July 2018, 21:42   #51826  |  Link
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Has anyone ever had success reporting any bug to nVidia? I've never got any reply or seen any improvement, so I haven't bothered with the recent bugs, as it looks like many of them are JVC specific, so they couldn't care less as they wouldn't be able to reproduce.
Last year I reported a bug, never got any feedback, but then it was fixed in the next driver branch. No idea if it was luck or if me reporting it helped.
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Old 26th July 2018, 22:38   #51827  |  Link
arcspin
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Quote:
Originally Posted by Asmodian View Post
The composition rate is the Desktop Window Manager which controls when screen updates actually happen. It is pretty good in Windows 10 (though Windows 8.1 is the best one according to madshi), and it is required for proper playback.
Great and thank you for an concise answer.
Is the composition rate anything to take into account when trying to set custom refresh rate or is it what it is. Is the Composition rate something that can and should be changed.

For me I have different refresh rates showing in Nvidia, Win 10 composition rate and in Vertex.

Again, thank you for sharing. This is s very interesting topic.

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Old 26th July 2018, 22:52   #51828  |  Link
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I would not worry about small differences in the composition rate, but it will cause trouble if the composition rate is 60 Hz while the refresh rate is 23.976 Hz or drastic mismatches like that. The composition rate should be close to the refresh rate, e.g. Windows 10 will set it to 24.000 Hz for a 24 Hz refresh rate or 23.977 Hz for a 23.976 Hz refresh rate.
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Old 26th July 2018, 22:56   #51829  |  Link
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Originally Posted by Asmodian View Post
I would not worry about small differences in the composition rate, but it will cause trouble if the composition rate is 60 Hz while the refresh rate is 23.976 Hz or drastic mismatches like that. The composition rate should be close to the refresh rate, e.g. Windows 10 will set it to 24.000 Hz for a 24 Hz refresh rate or 23.977 Hz for a 23.976 Hz refresh rate.
Great info,
My composition rate is set to 23.978 which sounds about right for me.

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Old 26th July 2018, 23:19   #51830  |  Link
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do i need new GPU with HDR support to watch 10bit video in my 10bit display with madvr ?
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Old 27th July 2018, 00:23   #51831  |  Link
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No, but your GPU has to support 10 bit and enough bandwidth for the resolution and refresh rate. HDR does not enter into it.
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Old 27th July 2018, 01:46   #51832  |  Link
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madshi, can smooth motion be further improved to retain sharpness like the original frame? Thanks.
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Old 27th July 2018, 08:00   #51833  |  Link
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Only via some motion interpolation (in which case just use your TV, apparently Sony is the best in this area) I did suggest the idea of sharpening only the blended frames some years back to madshi to combat this, but I guess it wasn't that great an idea.
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Old 27th July 2018, 08:13   #51834  |  Link
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frame interpolation is far less sharp because the main idea behind it is creating blurred frames in motion to hide artifacts
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Old 27th July 2018, 08:38   #51835  |  Link
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madshi, can smooth motion be further improved to retain sharpness like the original frame? Thanks.
Yes, with the new madshi's algo and two or three nvidia 1180 GTX.
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Old 27th July 2018, 08:40   #51836  |  Link
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A question about refresh rate since I'm always using custom resolution with 72hz, if I install windows 8.1 some day, do I need to enable this option in madvr - "hack Direct3D to make 24.000Hz and 60.000Hz work"?
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Old 27th July 2018, 13:09   #51837  |  Link
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frame interpolation is far less sharp because the main idea behind it is creating blurred frames in motion to hide artifacts
Not overall less sharp, this is why you get Soap Opera effects. Blending is far more soft in practice, I can quite clearly see this enabling Smooth motion vs enabling Frame Creation on my TV.
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Old 27th July 2018, 15:47   #51838  |  Link
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A question about refresh rate since I'm always using custom resolution with 72hz, if I install windows 8.1 some day, do I need to enable this option in madvr - "hack Direct3D to make 24.000Hz and 60.000Hz work"?
And how to know if it's needed?
I am always using 60Hz as I use smooth motion.
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Old 27th July 2018, 16:20   #51839  |  Link
JarrettH
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Yes, with the new madshi's algo and two or three nvidia 1180 GTX.


The sharpness difference isn't devastating. If the original frame is 5/5, then smooth motion is 4/5. Thought it might be something to think about if smooth motion is improved.
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Old 27th July 2018, 17:26   #51840  |  Link
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I have W10 build 17134 with i7-7700 integrated Intel HD630 on a Asrock mini-itx.
I also did a 3d-LUT with displayCal with MadVR.
I get random crashes with BlueScreen (first screen freezes, then becomes black, then audio get crazy, then BOD) when playing video with madVR enabled, using MPC-HC or Potplayer. When I disable madVR, i.e. with EVR all is fine.
BOD Error VIDEO_SCHEDULER_INTERNAL_ERROR
Can pass also 10 days with no crash, but sooner or later...
Generally I get the crash when scrolling the wheel to jump forward or backward.
What can I do to solve this?
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