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Old 19th March 2021, 00:07   #721  |  Link
manni500
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Thanks for the prompt response.

By lower resolution I mean 720p or less; but even a 720p is not always giving trouble.

Just for clarification: I am not using either of the two settings.bin that you keep available for download (I tested with them, but couldn't get them to work) but rather the basic settings that you mention in the text on https://forum.doom9.org/showthread.php?t=171787

My graphics cards is not great; it's a Zotac GT 1030 2GB. But no problem with films of 1080p and up and sometimes even 720p.
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Old 19th March 2021, 01:05   #722  |  Link
Asmodian
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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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Old 19th March 2021, 13:58   #723  |  Link
manni500
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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
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Old 19th March 2021, 17:23   #724  |  Link
manni500
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ADDENDUM

An interesting development: the judder goes away when I take out HW Acceleration in the LAV Filter

This probably will have other ramifications but I haven't found those yet
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Old 20th March 2021, 00:29   #725  |  Link
Asmodian
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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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Old 20th March 2021, 14:16   #726  |  Link
manni500
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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
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Old 20th March 2021, 16:33   #727  |  Link
manni500
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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
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