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Neat Video filter blinks on and off in playback.

 
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kingdingbat



Joined: 02 Oct 2015
Posts: 1

PostPosted: Fri Oct 02, 2015 9:39 pm    Post subject: Neat Video filter blinks on and off in playback. Reply with quote

I'm using Neat Video 3 on a video I'm editing in Adobe Premiere Pro and it has really bad blinking problem.

Basically on playback and even after rendering an export, the neat filter makes the video blink with distortion every 5 or so frames. Reducing the Temporal Filter Threshold helped but basically negated the noise reduction altogether and the blinking was still present.

Here is a clip showing what I'm talking about:
https://drive.google.com/file/d/0B65gBap3UUcPTEo5LUJXUlQ3bzA/view?usp=sharing

Any ideas on what's going on?
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Fri Oct 02, 2015 11:11 pm    Post subject: Reply with quote

Do you run the very latest update of v3 (v3.6)? If not, please update Neat Video and check if the problem is still reproducible.
If the problem is stil present then please prepare a small test project allowing to reproduce this issue and send the project to support [at] neatvideo.com for direct tests and analysis.

Thank you,
Vlad
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noise reduction for video and photos
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mathewlisett



Joined: 28 May 2010
Posts: 56

PostPosted: Thu Jan 21, 2016 11:41 pm    Post subject: Reply with quote

if you havent done this already, add a adjustment layer above your original file and place the neatvideo filter on there and see what happens ona render.
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Trixter



Joined: 06 Jun 2012
Posts: 8

PostPosted: Mon Sep 26, 2016 9:18 pm    Post subject: Reply with quote

I'm seeing this too. Was this ever resolved? If not, I'll open up a technical support case. (I am running CS5 so I don't have the option of adding adjustment layers.)
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Mon Sep 26, 2016 9:23 pm    Post subject: Reply with quote

Please prepare a test case (a project allowing to reproduce the issue if we run it on our machines) and send it to support [at] neatvideo.com for analysis.

This will also allow to check if it actually the same issue or not.

Thank you,
Vlad
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Neat Video team
noise reduction for video and photos
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Trixter



Joined: 06 Jun 2012
Posts: 8

PostPosted: Fri Sep 30, 2016 5:11 pm    Post subject: Reply with quote

I had prepared a test project and reproducible results, and then I found the issue was not with NeatVideo at all. For the benefit of others, I'll describe what I saw, and how I determined it wasn't NeatVideo.

The problem manifested itself as some frames "blinking" with a darker appearance for N frames, where N was equal to the temporal radius setting. Because changing the radius changed the blink duration, and because removing NeatVideo solved the problem, I initially blamed NeatVideo. What was actually happening was that the blinking was caused by another filter in the chain, the Premiere "Shadows/Highlights" filter. This filter is great for fixing terrible dark exposure problems, and I use it and NeatVideo together to repair underexposed footage. However, the S/H filter has default black/white clipping settings that can get confused when there are large solid areas in the source footage with the same color. My footage had that, and NeatVideo removed noise so well that small areas ended up having the same color and that triggered the S/H "buggy" behavior.

I determined it wasn't NeatVideo by removing the S/H filter and then noticing the problem went away, which then caused me to investigate the S/H filter. The true fix was to adjust the S/H filter's black/white clip settings from their default of 0.01% to just 0%. This fixed the S/H and I can now use them together.

I've been happy with NV 4.2. It's slower than 3.x (I use it on 1080p footage GPU only) on the same hardware, but the additional options are worth the tradeoff.
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NVTeam



Joined: 01 Sep 2005
Posts: 2238

PostPosted: Fri Sep 30, 2016 8:09 pm    Post subject: Reply with quote

Thank you for sharing your resuts. I am glad you could find the cause and resolve the problem.

Vlad
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noise reduction for video and photos
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