What is AI B-roll?
AI B-roll is supporting footage generated by AI instead of filmed or licensed from stock libraries. It illustrates what the narration describes — any scene, any era, any style — without a camera crew, and unlike stock footage it can match one consistent visual style across an entire video.
Traditional B-roll forces a choice between expensive shoots and generic stock clips everyone recognizes. Generated B-roll removes both constraints: if the script mentions a Roman aqueduct at golden hour, the scene shows a Roman aqueduct at golden hour.
The bigger win is coherence. Stock assembles clips from a hundred different cameras and color grades; generated scenes can share one palette, one lighting language, and one look — which is most of what makes a video feel professionally produced.