White flash
Watch as an animation →A momentary white flash that gives a feeling of impact, a flashback or a camera shutter.
A reveal moment, emphasizing the beat, a camera-shutter concept.
xfade=transition=fadewhite:duration=0.2 plus an impact sound effect. If you join two bright scenes, the flash is naturally hidden.
Flash white across the cut over 0.2 seconds between two 4-second clips, with an impact sound on the brightest frame: ffmpeg -i a.mp4 -i b.mp4 -filter_complex "xfade=transition=fadewhite:duration=0.2:offset=3.8" -an out.mp4. It blends in best between two bright scenes, and keep flashes below three per second.
Undu Media — How to Create a Flash Transition in Premiere Pro
Not verified