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Simulating HVX Noise / Grain?
Hi,
Can anybody recommend a good way to simulate the noise captured on an HVX200, with its gain set at about +3db? I’m very new to the noise and grain filters in AE and I want to get it right.
I’m doing an AE project that contains a lot of time remapped freeze frames. I’m using parts of the freeze-framed image, and comping them against moving footage. I just want the frozen footage to match the noise / grain of the moving footage.
Many thanks,
David
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5 Replies
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Effects > noise & grain > match grain (in AE CS4.)
Another option might be to remove the noise with effects > noise & grain > remove grain, then add some gaussian noise to all the footage.
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[Jim Arco] “Effects > noise & grain > match grain (in AE CS4.)
Another option might be to remove the noise with effects > noise & grain > remove grain, then add some gaussian noise to all the footage.”
Both of these options are fairly slow.
Sometimes what I’ll do is apply the Match Grain effect to a 50% gray solid, point the Match Grain effect to the footage I’d like to match, then pre-render just a few seconds of the gray solid to save on render time.
Then when I have the pre-rendered gray solid I place it above the footage I want to affect and set it to one of the overlay modes (i often use the ‘linear light’ blend mode at a low opacity since it’s such an intense blend mode).
This should apply the noise from the gray solid to the footage. Then I can loop the noisy footage of the gray solid (there shouldn’t be a noticeable jump at the beginning/end of the clip since we’re dealing with fairly random noise).
If the noise is more intense than you need it to be, you can reduce the opacity of the gray noise layer.
You should also take the time to learn the match grain controls to get a better match the first time around.
Darby Edelen
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Many thanks. Very helpful.
Because I’m applying the filter to a freeze-framed image, I believe AE is freezing the noise as well. It doesn’t dance around like normal pixels would. Is there a way to apply the effect to a layer that’s been freeze-framed or time-remapped?
Thanks again!
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Great – incredible. Thank you.
I found that blending it as Darby explained above works great, however it affects all the layers below the grain layer. So I just matted the area I needed…
Thanks so much.
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The Match Grain effect takes samples over time when it attempts to match the grain of the footage. If the grain isn’t ‘moving’ in the footage then it won’t move in the matched grain. You should use a small segment of full video for this.
Darby Edelen
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