Film Grain Without Digital Noise
Film grain is a fine texture across the frame. Color speckles in the shadows are noise. Add grain only after the light is right.
Film grain is a fine, even texture you can see in the sky and on the skin. Digital noise is colored speckles that pool in the shadows and crawl when the picture moves. If you ask for grain because the face looks plastic, you are covering a lighting problem. Fix the window first. Add a little grain only when the still is already a photograph.
Grain is even
It shows on the bright wall and on the cheek in the same size. Noise hides in the dark corner and turns green and magenta. If only the shadow is crunchy, you do not have grain.
Keep it quiet
"Subtle" is the word. Heavy grain plus a talking mouth looks like a bad encode, and captions become harder to read. A host in a kitchen rarely needs grain at all.
Do not stack it on plastic
Pores and a real light source come first. Grain on poreless skin looks like sandpaper on a mannequin. Reject that still and relight it.
A worked example
The approved still already has window light and pores. A very fine grain is optional. A pass with green speckles in the hair is deleted.
Check the still
- Texture appears in the highlights too.
- Shadows are not green-speckled.
- The face already had real light.
Where Scro fits
Approve the clean still in Scro before motion. Grain will not be added by the talking clip, and it should not be asked to hide a plastic face. Trim silence and export 9:16.
Fix the light before you add grain. Finished samples are on the examples page.
Related: Skip Teal and Orange on a Host.