Generate the final voice line first, with its delivery, then give that audio to the video model as the audio reference for the face.
Voice first, then the face
The mouth is generated for the voice that ships, not for one that is replaced later.
- Use when
- Generated people who speak: testimonials, ads, characters.
Prompt instructions
Give me a sound brief: what to record or pick, where it sits on the timeline, the levels, and what to check before export, for a short video about [your product], for [your audience]. The technique is voice first, then the face: the mouth is generated for the voice that ships, not for one that is replaced later. How it works: generate the final voice line first, with its delivery, then give that audio to the video model as the audio reference for the face. It is right for: generated people who speak: testimonials, ads, characters. Not yet run by us. A voice reference used directly in the video model is often inconsistent between takes; the vendor's post and our own skill agree on that. Be concrete: numbers, seconds and settings, no theory. Ask me one question first if something you need is missing.
The same prompt works in Claude, ChatGPT and Gemini.