Flashing, blinking and flickering imagery can trigger seizures. According to the Epilepsy Foundation, flashing light between 5 to 30 flashes per second is most likely to cause seizures.
If your video has strobing effects or flashing images, it’s important to add a line of text at the start of your video as a disclaimer for viewers.
Flashing imagery example:
![concrete UC Davis sign with white letters and disclaimer notice text](/sites/g/files/dgvnsk6246/files/media/images/flashing-imagery-example.jpg)