B-Roll Finder

Sources and places b-roll for a video edit: classifies each moment of a talking-head transcript, scopes the search to trusted/authoritative sources, returns vetted candidates, and places clips anchored on the spoken word. Use when the user says "find b-roll", "source clips for this edit", or wants footage, receipts (tweets/headlines), screenshots, or motion graphics to lay over a talking-head video. Covers taste-profile onboarding, candidate scoring, sub-pixel Ken Burns for stills, and full cutaway rendering with self-verification.