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19th March 2021, 01:05 | #721 | Link |
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The first thing I would do is make sure quadrupling is disabled.
If you use ctrl-J, do you see the average rendering times above the frame time?
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19th March 2021, 13:58 | #722 | Link |
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Quadrupling is not enabled; on the scaling algorithms I use
- Bicubic60 - Bicubic150 - Lanczos 3 taps On ctrl-J, rendering is shown as 27.01 and 34.75ms resp. (screenshot attached); this on a video where judder is indeed prevalent |
20th March 2021, 00:29 | #724 | Link |
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Interesting, that is weird.
Do you have the frames presented in advance set to 3 or 1? (recommended) Sticking to software decoding is a great option though, if you aren't trying to watch 4K HEVC on a lower end or older CPU.
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20th March 2021, 14:16 | #725 | Link |
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Frames presented are set to 3, I will now test things with 1 and report back.
My CPU is indeed a bit of a grandfather, I will likely have to get a new motherboard sometime soon. Still, that will not explain the judder question: When the low-resolution films run on the fairly new GPU, I have judder. But when they run on the old CPU, there is none |
20th March 2021, 16:33 | #726 | Link |
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UPDATE
I fiddled around with the frames presented - 1, 3 or 8: no difference. Meanwhile, I realized that there were a lot of frames dropped when showing in top resolution (3940x2160). This caused me to play with some of the madVR settings, and low & behold - no more or only very few frames dropped and no more judder! Unfortunately though, I cannot put my finger on what exactly caused this improvement. But if you have an interest, I will be happy to send you the new settings.bin file |
4th November 2021, 01:04 | #727 | Link |
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I've tried to set up separate profiles for 23,976 and 24 fps content, but my rules seem to round up and treat both framerates as 24 fps.
Does anyone have rules to differ between these two or any idea about how I can make them? |
4th November 2021, 15:04 | #728 | Link |
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Not sure why you would need to differentiate between the two, the processing power used for both should be nearly the same. But if I was going to make rules <24 and <25 should do the trick
QB
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4th November 2021, 18:51 | #729 | Link |
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it's about reducing framedrops.
with 23.976fps content and 59.94Hz I get 2:3 pulldown, but with 24fps content and 59.94Hz I get lots of dropped frames. If I increase the framerate to 60Hz I don't get as many dropped frames anymore. Ive tried these three rules: Code:
if (deintFps < 24) "23fps" else "24fps" if (fps < 24) "23fps" else "24fps" if (fps >= 24) "24fps" else "23fps" It's almost like MadVR rounds 23.976 up to 24 and can't differ between the two. |
7th November 2021, 00:10 | #733 | Link | |
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Thank you soo much!
This ruleset works perfectly Quote:
MadVRs dropped/repeated frames stay up in the hours range when I match it the way I want to. I did a short test having it the "wrong way" and I got numbers wich add up to what you said: 1 frame repeat/drop every 1000 frames. 24.000fps 59.94Hz = 1 frame drop every ≈41s 23.976fps 60Hz = 1 frame repeat every ≈41s @QBhd Yes normally it would be better to setup a proper 23.976 and 24.000 refresh rate. Because my TV doesn't accept 4:4:4 chroma at 23.976 or 24.000hz refreshrate I use 59.94 and 60Hz instead. I never imagined the TV would have a limitation like this, but the only thing I can do is to try and work my way around it |
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7th November 2021, 19:01 | #735 | Link |
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No, I don’t think it will make a night and day difference.
It’s still an improvement within the compromises I’ve chosen. Do you think I shouldn’t make this (now automated) improvement because it’s not a night and day difference? I’m just curious, I’m doing it like this until either my equipment or opinion changes |
8th November 2021, 03:07 | #739 | Link |
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Thank you for your input!
I'm already using smooth motion (with the setting: only if there would be motion judder without it) Using the Ctrl-J stats I see it as enabled. So even with smooth motion I see an improvement in dropped/repeated frames with changing the refresrate. I guess I could try a custom refreshrate with reclock, but I can already send 23.976 and 24.000Hz to my tv, which makes me lose 4:4:4 chroma. Using ≈ 60Hz (59.94 and 60.00Hz) I keep 4:4:4 chroma. Since this is a limitation in the display (as far as I can tell) I really doubt re-clock will do any difference. What's your thougts on it? |
8th November 2021, 05:40 | #740 | Link |
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with SM active the drop/repeat number is still calculated but will never ever happen this is not a joke you will not drop or repeat a frame for sync reasons. it should be remove so user don't get confused it's clearly miss leading.
for a custom resolution i would try 48 from the usual also PC mode 50. custom resolution that change the refreshrate are unlikely to work on modern TVs. |
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