The Flicker effect creates rapid variations in brightness and color, simulating light flickers, old film effects, or general lightness fluctuations.
How it works
Flicker uses procedural noise to generate random variations in image properties over time. The effect processes brightness and color independently, allowing for precise control over different aspects of the flicker. It uses smooth noise functions to create natural-looking transitions between values rather than harsh jumps.
The effect can modify brightness and it can shift colors through the hue spectrum to create color instability effects. These parameters can be combined to create a wide range of visual disturbances, from subtle film grain to dramatic glitchy effects.
Controllers
Lightness controls
| Name | Type | Description | Range |
|---|---|---|---|
| Brightness Amplitude | Number | Controls the intensity of brightness flicker | 0-1 |
| Brightness Frequency | Number | Controls how rapidly brightness flickers | 0-10 |
| Brightness | Number | Base brightness multiplier | 0+ |
| Contrast | Number | Adjusts the contrast of the image | 0+ |
| Darken | Boolean | Allows brightness to go below normal | - |
Brightness Amplitude determines how much the brightness varies during flickering. Higher values create more dramatic changes between light and dark states, while lower values create subtle variations. At maximum values, the image can pulse dramatically between very bright and normal brightness (or dark if Darken is enabled).
Brightness Frequency controls how rapidly brightness changes over time. Higher values create faster, more erratic flickering, while lower values create slower pulsing.
Brightness is a base brightness multiplier applied to the entire image, useful for making the entire image brighter or darker
Contrast is similarm but for contrast
Darken determines whether brightness can drop below normal levels. When enabled, the flicker can create darker moments.
Color controls
| Name | Type | Description | Range |
|---|---|---|---|
| Color Amplitude | Number | Controls the intensity of color shifts | 0-1 |
| Color Frequency | Number | Controls how rapidly colors shift | 0-10 |
| Color Seed | Number | Changes the random pattern of color shifts | 0+ |
Color Amplitude determines how dramatically colors shift during the effect. Higher values create more noticeable color changes that can completely transform the image’s color palette.
Color Frequency controls how rapidly colors shift over time. Higher values create faster, more chaotic color changes, while lower values create slower, more gradual transitions.
Color Seed changes the random pattern of color shifts. This is useful for when you have multiple instances of this effect and you want them to explicitly sync or not sync.