How to replace what someone says with a new script in their own voice
Upload the video and paste the script you want said instead. Vizard Agent analyses your delivery, energy and room acoustics, clones the voice, tests more than one engine before choosing, and lines the new speech up so its emphasis lands on the same physical moments as the original.
What do you type into Vizard Agent?
Paste the script word for word and say it's your own voice. Vizard Agent takes the voice model from the recording itself, so no separate sample is needed, and it studies the delivery so the replacement carries the same energy rather than reading flat. Keep the length close to the original's.
Prompt
What does Vizard Agent actually do?
It keeps everything that was right about the original take and replaces only the words. Room acoustics are part of how a voice sounds in a space, so they get analysed too, or the cloned voice lands on top of the footage rather than inside it. In the session behind this article it:
- Downloaded the video, transcribed the spoken words, extracted the audio and printed the full word timestamps for the original delivery.
- Sampled the frames to review the speaker and the setting, and analysed the delivery, energy, room acoustics and sound effects.
- Tested voice cloning on two separate engines, generated the full speech on both and analysed each for dynamic range, emotion and escalation.
- Analysed the audio energy around a table slam, extracted frames at that moment and pinpointed the exact instant of the gesture, so the new emphasis would land there too.
- Delivered 21.73 seconds at 1280x720 and 30fps, with the picture untouched.
When does this not work well?
Putting new words into a real person's mouth must never be misused, and Vizard Agent states the limits plainly. Only do it with the speaker's consent, never to make someone appear to say what they refused to, and disclose it where that matters. Technically, lip movements are the constraint: a very different script won't match the mouth.
Common questions
Can I do this to someone else's video? Only with their explicit consent. This is not a technique to use on a person who has not agreed.
Will it sound like me? Closely. Vizard Agent tests more than one cloning engine and chooses the better match.
Does it match my gestures? It does. Vizard Agent finds the physical moments and lands the new emphasis on them.