Generate an 8-10 second video prompt centered on an AI era warning stage speech. Build it as a reusable video brief with three concrete beats: open by establishing the adult speaker, stage setting, and urgent but brand-safe message; move into the main speech beat, audience reaction, or visual emphasis with a clear camera path; end on a stable hero frame that can work for a landing page preview, product showcase, or social cutdown. Anchor the sequence on an adult speaker or presenter, natural facial motion, clean lip-sync or reaction timing, stable framing, and safe audience-appropriate delivery. Specify pacing, lens feel, camera distance, lighting, motion blur, and continuity rules so the output stays readable. Keep all subjects, props, locations, text, and logos editable. Avoid real brand names, celebrity references, fixed IP, readable signage that cannot be changed, unsafe action, sudden teleport cuts, inconsistent scale, warped anatomy, and unrelated extra scenes.