Devices > Video Cards, Monitors, Televisions, and Projectors

Ghosting issues with 4k files

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lello:
For some time I have been trying to solve a problem that occurs mainly with 4k videos, that is the well-known problem of ghosting.

As a test I use the scene from Acquaman 1:22:15 in which the camera moves from the man eating the apple to the group of people sitting.
In that scene, as in others, that ghosting effect is really annoying. :P
It would be solved with a projector with interpolation frame, but with my Epson TW9400 the interpolation frame is activated only with HD films and not UHD.
I tried SVP SmoothVideo Project, but it barely works with 2k, while with 4k, in addition to using too many resources, madvr tone mappings is not activated.

Does JRiver plan to activate a sort of interpolation frame for 4K too? Or can someone tell me some plugins to use with JRiver?

wer:
It already has it.

If you use Red October HQ as your MC rendering mode, then you can turn on the Smooth Motion feature in MadVR.  You should definitely give it a try.

And in order for MadVR's Smooth Motion feature to work, you will have to increase the display rate for your movie from 24 to 120fps.

And then you will observe that blending 4k frames at high frame rates requires a tremendous amount of processing horsepower, as you have already seen with SVP.

That's why this functionality is built into TVs, so that it can be done in hardware with special ASICs.

If frame interpolation at 60 or 120fps is extremely important to you, you might need to consider a new video card or a new projector.

Good luck...

lello:
I tried smooth motion, but things got worse.
One thing I didn't understand. You say to increase the viewing speed of the film: in what way?

wer:
Your movie is nativity 24fps.

Frame blending or interpolation must use MORE frames than that to have any effect.

So you must set your display rate for your video card to a higher rate, usually 60 or 120fps for movie playback, and keep it at this rate while playing your movie.

The frame rate MC uses is found in advanced video settings, if you have MC change the display rate. You would have to disable madvr display mode switching to use MC's.

I don't have access to a PC at the moment to give you further screenshots, but a google search can also teach you how to change these settings.  So if you're really interested in pursuing it further, that's what I'd suggest.

But it sounds like your computer has insufficient power for what you want to do.

lello:
I was able to force the display to go out at 60hz by tweaking MC's screen settings and advanced video settings.
The pc does it (I have an Rx 580) but the problem remains with both smooth motion enabled and disabled.

Should I set something special on the video card panel?

It is a problem that I would like to solve, if possible, because with a screen of more than 3 meters of base, it is quite annoying.

But I can't buy a € 30,000 projector with frame interpolation even with 4k to solve this problem  :o ;D

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