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4 votes
Accepted

Why videos taken in the dark has color artefacts (noise)?

The noise in dim-lit environments is a result of how digital cameras work. The exposure of a picture or video depends on three essential parameters: lens aperture, shutter speed and ISO. The first two ...
MoritzLost's user avatar
  • 5,412
3 votes

Why videos taken in the dark has color artefacts (noise)?

When you have a camera with a small sensor, the little photosites can't read light very well. Photosites are like little pixels that are buckets of light that build up the image. When your sensor can'...
LetTheWritersWrite's user avatar
3 votes
Accepted

I want to add video noise/grain based on an audio track?

You can convert audio to keyframes. Right-click the footage with the audio, and choose Animation>Keyframe Assistant>Convert Audio to Keyframes, or with the audio layer selected go to the Animation ...
stib's user avatar
  • 13.7k
2 votes

How to avoid noise when filming dark red

Filming any light that is strongly a single color is likely to produce a lot of noise because it's absorbing more light. (In your case, the red brick is absorbing green and blue, leaving only the red.)...
user1118321's user avatar
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2 votes
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How can you use ffmpeg's afftdn -sn flag to sample noise from a reference noise file?

Commands are instructions sent from an interface external to the filter, usually an external program using a ZMQ protocol. There is a filter that can execute commands which is what I'll use here. ...
Gyan's user avatar
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2 votes
Accepted

What causes a loud tone/noise in Blackmagic ATEM talkback?

tl;dr Make sure none of the SDI outputs of the ATEM are routed back to its inputs. Talkback feedback loop The ATEM uses SDI channel 15 and 16 for talkback. If you route one of your SDI outputs to the ...
totymedli's user avatar
  • 196
2 votes

How to edit the DeNoise parameters for all cut parts of a clip?

If you need to apply the same effect to a whole clip, you can use Master Clip effects: https://helpx.adobe.com/premiere-pro/using/master-clip-effects.html That way, you apply it to the file, and any ...
tomh's user avatar
  • 7,782
2 votes
Accepted

How can I make 4K videos shot at night with a Google Pixel 6 less grainy?

There's not much you can do. Either make the entire video darker or use some form of denoising software. Unfortunately, to get the video to be as bright as you see, it requires amplifying the image ...
Elijah Ciali's user avatar
1 vote
Accepted

Noise filtering/cancellation via software while recording voice

As you're working in mono, this becomes easy, using that dreaded misnomer… AI Just record your soundtrack as normal, then throw the resulting file at Adobe Enhance (free but requires sign-up). It only ...
Tetsujin's user avatar
  • 616
1 vote
Accepted

Cartoon styled stroke effect?

"Roughen edges" effect applied to the stroke layer - play with the settings. Then "Add Grain" effect as an adjustment layer, as shown below: Also see this answer if you need to ...
tomh's user avatar
  • 7,782
1 vote

How do you reduce wind gust sounds from video?

Two possible ideas. When writing this answering I'm thinking in terms of the capabilities provided by Audacity but I think the same concept will work with other software. Pick a silent part of the ...
The Movie Man's user avatar
1 vote

How can you use ffmpeg's afftdn -sn flag to sample noise from a reference noise file?

This worked beautifully, many thanks to @Gyan. Just to add to the accepted answer, as I needed to do this for a large number of mp3 audio files with similar noise profiles and with a naming scheme of ...
Musical BenjiMan's user avatar
1 vote

What to do in order to avoid noises on records from DSLR for greenscreen?

I presume what you call noise is caused by uneven lightning, so when your NLE removes green, you see splotches or brighter or darker green that it did not remove. The first and foremost task is to ...
Rusty Core's user avatar
1 vote
Accepted

What to do in order to avoid noises on records from DSLR for greenscreen?

Well, the noise has little to do with the green screen, with the probable exception that you can now compare your image vs a clean background. The only way to reduce the noise is by having more light....
Rafael's user avatar
  • 1,182
1 vote
Accepted

Noise (from autofocus?) during Video on DSLR

The noise you talk about is usually caused by lens motors related to autofocus and motors, related to image stabilization. The best you can do is to use external microphone and connect it to ...
Romeo Ninov's user avatar
1 vote

Getting audio components from two audio streams to remove noise

So, you'd be inverting the phase of the noise signal, adjusting its amplification to match the level of the noise in the other clip, and then summing the two to obtain speech minus noise. You might ...
stib's user avatar
  • 13.7k
1 vote

I want to add video noise/grain based on an audio track?

Trapcode Particular is the tool of choice for this. You can generate any type of noise/particles, based on an audio track, and tie the parameters to not just the track, but specific frequencies (so ...
McFlySoHigh's user avatar
  • 2,487
1 vote

Is in-canera noise reduction useful for video?

My general rule is to do as little in the camera as possible (exposure, shutter). Leave everything else for post. It's not expected that the camera will have the best available NR or compression etc, ...
Jim Mack's user avatar
  • 4,674

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