Disappointing Results with Noise and Banding Reduction

I have the latest version of TVAI but have been disappointed with the results lately. It doesn’t clear up noisy, grainy, banded videos and I have tried so many permutations of AI models, second enhancements, dynamic and manual settings, but still the results are not great. Seems banding and grain/noise are only slightly reduced so no crystal clear results.

Hard to give you any advice without knowing what the specs of your source/input video is. Also a short clip would help too.

please provide an example so that we can give it a try!

Here is the Filemail link I sent to Kyle B.

This is just one video of many I have not been able to remove enough noise and grain or banding to make the video clear enough.

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Try Nyx fast with these settings:
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this is my first attempt with Iris Medium:

Thanks and yes an improvement but as I have found even using second enhancements I can’t get a nice clear crisp image.

Thanks I tried and yes an improvement but still grain/noise. It is always worse when there is low light /dark scenes where the noise/grain is worse and also banding.

When you say banding, you mean color gradient bands?
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Lately I found by using Iris MQ (x1 / Original resolution) with the following settings to be very efficient denoising AI, removing noise from my HQ/HD content with much much less details loss then what I am getting with Nyx (all variants of Nyx and number of settings I’ve tried).

For both cases (bellow) I left the Recover Detail (ROD) at it’s default value of “20”

For Medium+ noise level source (Manual mode)
Fix compression = 40
Improve Detail = 30
Sharpen = 0
Denoise = 40
Dehalo = 0
Deblur = 30

image

For light/moderate noise level source (Manual mode)
Fix compression = 40
Improve Detail = 40
Sharpen = 0
Denoise = 20
Dehalo = 0
Deblur = 30 (=50 sometimes provide better crisp picture, but higher risk of fine objects distortion, such as clothing, tank top strap/lace, etc.)

image

Not just colour but background pixilated rings.

Thanks I will give that a try.

Well, there’s none of that in the tiff output. Once I convert it to video again, it seems to get introduced.

If you’re not upscaling it, Artemis Medium Quality does a pretty good job.

Hello,

I did a test with your source (good quality) in 2 steps:
First step: Import HD source and export with IRIS2 (auto settings) with half size: 960x540 px with a Prores HQ 422 codec (the least compressed possible).
Second step: import of the first step and export UHD with RHEA in upscale 4x: 3840x2160 px. only modification compared to relative to auto: Improve detail = 25. That’s all. After according to tastes we can still force other parameters but always with moderation.
Here I did the export in Prores 422 HQ.
The screenshots are 3420x1886 px from my player but the video is indeed 3840x2160.





I find rhea good.

OK thanks.

Sorry but without a before/after picture comparison we can’t see if Rhea is good.

A new series of photos for comparison.
Difference in grain, sharpness, etc…to be tested.






Thank you for that detailed information, I did try it but in the dark scene there is some visual distortion, otherwise good.

Otherwise, you need to (maybe lower or increase) the improve detail? or play on another sharpen parameter (maybe lower or increase). Do render in/out tests on the area concerned, or leave all the parameters at default?

Thank you in advance for producing a screen copy of this visual distortion (for my information).

After a promising entry in the post production market there seems little joy with this application. Here it is April 2025 and outstanding errors in this much promoted app have not been corrected. Earlier this year I returned to VAI V.5.4 on the advice of a Topaz Labs staffer, as later versions have not done away with errors, and V.6 has a completely non-intuitive, unusable UI.

As for the product’s enhancement features, restoring sharpness is useful. However, reducing grain can produce what is sometimes called “salt and pepper” in the film restoration world: ugly, sand like pixels that require further smoothing with third party plugins and/ or applications. Presently, I do not recommend Topaz Labs’ VAI as a singular, fix all application for motion enhancement and time remapping.