Re: Editing An Interview w/o B-roll

Flashes can work. Two frames of white. Or flash whatever color the background is. Could also throw in a subtle sound effect like a pop, fizz or deep-whoosh to give it a bit more oomph on the edit.

If it's HD, cut in to a close up of their eyes/mouth on specific words to add emphasis. To disguise the change in video quality, color=correct the zoom in; either b&w or some kind of blown out effect.