Home › After Effects Presets › Behaviors › Opacity Flash - random
Free — After Effects 2026Opacity Flash - random After Effects preset
This is what the built-in Opacity Flash - random preset does. It is in the Behaviors folder of the After Effects animation presets, and it works on any layer.
Click the preview to copy the name.
- Where
- Effects & Presets › Animation Presets › Behaviors
- Works on
- Any layer
- Comes with
- After Effects. Nothing to download.
How to apply Opacity Flash - random
- Select the layer you want to move.
- Open Window › Effects & Presets, paste the name in the search box and double-click Opacity Flash - random.
- Change the amount and speed in the Effect Controls panel.
Behaviors are driven by expressions, so there are no keyframes to move. Use the sliders the preset adds in the Effect Controls panel.
Where is Opacity Flash - random in After Effects?
Open Window › Effects & Presets and go to Animation Presets › Behaviors. It is quicker to type the name in the search box at the top of the panel.
Do I need to download Opacity Flash - random?
No. It is installed with After Effects; this preview was rendered in After Effects 2026. On disk it is an .ffx file in the Presets › Behaviors folder inside the After Effects application folder.
How do I change Opacity Flash - random after applying it?
Behaviors are driven by expressions, so there are no keyframes to move. Use the sliders the preset adds in the Effect Controls panel.
More Behaviors presets 27 in this folder
Random Colors
Random On-Off
Random Whole Numbers
Rotate Over Time
Scale Bounce - layer markers
Scale Bounce - random
← Opacity Flash - layer markers · All 27 Behaviors presets → · Random Colors →