Having a lot of noise on your footage can quickly ruin your shots, adding weird artefacts and colours that detract from the overall video. Noise reduction can help solve this.
Before we jump in, please note that this tutorial only applies to Davinci Resolve Studio, so if you have the free version, you won’t be able to do this. I do highly recommend getting the studio version, its really affordable and packs in a load of extremely useful tools.
Why is your footage noisey
So as I have already mentioned, having a lot of noise in your videos can be really distracting for your viewers, degrading the overall image quality.
You’ll most commonly come across noise when shooting in low light situations. As you crank up your ISO, you cameras sensor will begin to introduce it.
This is something that happens on all cameras, and is generally best solved by adding more light into the scene, but if you cannot do that, you’ll want to remove it in post.
How to remove video noise
Noise reduction is typically the first thing I will apply when color grading,
Simply add a new clip to your timeline, head over to the ‘Color Page’, and create a new node called Noise Reduction.
Next, head down to the ‘Motion Effects’ tab, and you are greeted with quite a few options.
Resolve provides you with a two different ways to do noise reduction, ‘Temporal Noise Reduction’ & ‘Spatial Noise Reduction’.
Typically I’ll use ‘Spatial Noise Reduction’, so that’s what we’ll do today.
Next to mode, we have three different options, ‘Faster’, ‘Better’ & ‘Enhanced’.
Which one I choose here, greatly depends on the type of project, as it has a big impact on your rendering time.
For YouTube videos, I’ll go with ‘Faster’, for client projects I’ll use ‘Better’, and for any films or passion projects, I go with ‘Enhanced’.
For radius, I’ll typically leave it at small.
So far so good, there won’t be any noticeable changes yet, but this next step will start brining it into effect.
Under ‘Spatial Threshold’, uncheck the link between ‘Luma’ and ‘Chroma’.
We want to adjust these individually.
‘Luma’ will effect the luminosity of your noise, while chroma effects the colours in your noise - the RGB static you can often see.
The way you set these is very much down to your camera and the scene you are filming. I find setting ‘Luma’ to 3, and ‘Chroma’ to 20, is a good starting point for my camera, and can make tweaks from there.
Now, if we enable and disable this node, you can see that it does a pretty great job of quickly cleaning up some of the noise.
So there we go, that is how you can quickly clean up digital noise in Davinci Resolve. Doing this is a great first step to your color grading, and will result in a much better overall image.
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