Definition — Synchronizing a persona's mouth movements to an audio track in video. Combined with a voice track, it turns scripted copy into spoken presenter clips.
Lipsync analyzes an audio track and re-renders the speaker's mouth, jaw and lower face so the visible articulation matches the words being spoken. The rest of the performance — head motion, eyes, expression — comes from the underlying video, which is why a good base clip matters as much as the sync itself.
Quality is mostly determined upstream: clean, dry voice audio (no music bed at sync time), a front-facing or near-frontal framing, and moderate head movement. Extreme profiles, fast motion and occlusions (hands, microphones) are where sync visibly breaks down.
In the AI persona workflow, lipsync is the last step of the talking-head pipeline: still, then image-to-video, then lipsync to the script. The result is scripted copy delivered by a consistent synthetic presenter — content that falls squarely under AI-disclosure and platform labeling rules, so label it accordingly.
A presenter-style video framing where a persona speaks directly to camera, common in explainer content and testimonial-style ads.
Generating a short motion clip (typically 5–10 seconds) from a single still image, preserving the subject and scene while adding camera or subject movement. Used to turn winning stills into motion placements.
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