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Old 28th May 2015, 22:05   #1  |  Link
krille
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Nvidia 23,796 custom refresh rate

Just wanted to share something that has worked on both my old 650 card, and also my new 960. I discovered that even though i came pretty close to 23,976 i still had dropped/repeated frames. I also noticed that when I was playing a 24p movie I could play a whole movie without dropped frames even though the stats in madvr did not report exactly 24,00000. On my 650 card it was a little bit more than 24,00000, lets say 24.00123 and on the 960 card a little bit less, lets say 23,99932.

So what I did on the 650 was to take:

23,97602+0,00123=23,79725

and om my new 960:

24,00000-23,99932=0,00068. 23,79602-0,00068=23,79534.

So to sum it up: I did not aim at 23,976 when setting the custom refresh rate. On the 650 I was aiming for 23,79725 (see above) and on my 960 i aimed for 23,79534( also see above).

This actually works for me! I can now play a whole movie without reclock @23,796 without any framedrops/repeats. Try it for yourself!

Hope you understand what I am writing here as my english is not the best...

Last edited by krille; 29th May 2015 at 05:39.
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Old 28th May 2015, 22:08   #2  |  Link
huhn
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the clock it self is pointless the clock deviation is the problem.

23.965 could result in perfect sync it just depends on the audio clock.
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Old 28th May 2015, 22:13   #3  |  Link
krille
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Works for me though.
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Old 28th May 2015, 22:46   #4  |  Link
huhn
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just play a video for 2 mins and look at the madVR OSD. if you see a repeated frame every 3 h + than yes you hit the mark for your system.
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Old 5th June 2015, 00:47   #5  |  Link
Ceremony
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not every monitor might handle the signal well though, as this is not a standard clock at all
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Old 5th June 2015, 00:54   #6  |  Link
huhn
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there should be no problem as long as the device supports 23p.

a clock with 23.950-23.990 happens all the time with stock hardware.
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Old 30th June 2015, 08:04   #7  |  Link
Zachs
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Or just use MPDN's rate tuner

I spent countless hours that I'll never get back trying to get my display refresh rate exactly what I wanted but I could never get close enough. It's always been a pet peeve of mine!

Last edited by Zachs; 8th July 2015 at 06:24.
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Old 30th June 2015, 18:16   #8  |  Link
krille
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Quote:
Originally Posted by huhn View Post
just play a video for 2 mins and look at the madVR OSD. if you see a repeated frame every 3 h + than yes you hit the mark for your system.
Yes, of course you could do that, but it might save time to know what refresh rate you are aiming at. As I said i aimed at 23,79534. I got pretty close and the stats are pretty fine.

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Old 30th June 2015, 18:20   #9  |  Link
huhn
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Quote:
Originally Posted by krille View Post
Yes, of course you could do that, but it might save time to know what refresh rate you are aiming at. As I said i aimed at 23,79534. I got pretty close and the stats are pretty fine.

http://i62.tinypic.com/ndmyqo.jpg
but it is pretty worthless to aim at the same speed for most other user even with the same GPU.
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Old 30th June 2015, 18:34   #10  |  Link
krille
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Quote:
Originally Posted by huhn View Post
but it is pretty worthless to aim at the same speed for most other user even with the same GPU.
Yes, it would, but it might work if they did what I said in my first post.
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Old 1st July 2015, 20:02   #11  |  Link
pirlouy
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Nobody would follow the advice of someone who confused 23.976 with 23,796 that much.
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Old 12th July 2015, 12:22   #12  |  Link
6ari8
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Since MadVR got a 64bit build and having known Reclock developers having no plans to do the same, I've been tinkering with Nvidia Custom Resolutions to get a perfect 23.976 playback. After a LOT of tinkering, I got to a near-perfect 23.976 playback so I'll share my settings here in case someone might benefit from them.

System: Alienware M14x R2, Intel i7-3720QM, 16GB RAM, NVIDIA GeForce GT 650M 2GB + Intel HD Graphics 4000, Windows 10TP 10166.

Custom resolution timings:


This is what this CR got me using MPC-HC+LAV filters+MadVR and using the Directshow audio renderer from MPC-HC. As you can see it's very good.


I was interested in trying out MPC-BE's WASAPI audio renderer since MPC-HC's was broken. So, I tried MPC-BE and was surprised that even though the resolution was the same, the clock deviation became much smaller and pretty much eliminated my frame drops.

I got the stand alone MPC-BE filters and registered the renderer with regsvr32 so I can try it with MPC-HC and it was perfect.







I'm not sure why changing the audio renderer did that but I'm happy with the result.

Last edited by 6ari8; 13th July 2015 at 01:01.
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Old 1st May 2020, 20:55   #13  |  Link
THU22
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This is an old thread, but I think it is better to post here than to create a new one.

I tried creating a custom resolution to get exact 23.976 Hz and I managed to achieve it (madVR confirms it). The problem is that any custom resolution is limited to RGB 8-bit, which means I cannot use HDR, not even with dithering, I just cannot turn it on at all.

Is there any way around that?

I have been using ReClock for many years, but it would be nice to able to bitstream Atmos/DTS:X when I upgrade my audio system.
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Old 2nd May 2020, 04:41   #14  |  Link
Stereodude
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Use Custom Resolution Utility instead.
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Old 5th May 2020, 20:59   #15  |  Link
shaolin95
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Quote:
Originally Posted by THU22 View Post
This is an old thread, but I think it is better to post here than to create a new one.

I tried creating a custom resolution to get exact 23.976 Hz and I managed to achieve it (madVR confirms it). The problem is that any custom resolution is limited to RGB 8-bit, which means I cannot use HDR, not even with dithering, I just cannot turn it on at all.

Is there any way around that?

I have been using ReClock for many years, but it would be nice to able to bitstream Atmos/DTS:X when I upgrade my audio system.
It seems to be an issue with Nvidia drivers like forever!
But like Stereodude said, Custom Resolution Utility works perfectly one and lets you select 12bits (in my case). I used it for my JVC projector and it adds the resolution under PC resolutions in the Nvidia Control Panel (i had to reboot to get it to show).
Now currently testing a movie and it is showing just over 5 hours before repeated frames.
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