To change the words in a talking video without recording a new take, upload the existing face video to Text to Video Lip Sync, type the replacement script, and choose a voice. The tool generates speech from your text and synchronizes it with the filmed performance. This guide shows why a text-driven rewrite is useful, how to prepare the inputs, and what the existing source-to-result example actually demonstrates.
Why rewrite a talking video with text?
Correct an on-camera message without another shoot
Suppose a presenter recorded a product introduction, then a price, date, feature name, or call to action changed. Filming again means reassembling the camera setup and repeating a performance for a few changed words. With a text rewrite, you can prepare the corrected line, choose the voice, and reuse the footage. Check the revised result against the surrounding edit before publishing: a gesture toward an old on-screen price will not change just because the words do.
For an isolated correction within a longer film, export the section you want to update as its own clip, generate that revised section, and place it back in your edit. The tool does not automatically find and replace one sentence in a completed timeline.
Make several versions from one filmed performance
A creator, teacher, or founder may need different introductions for a lesson, audience, campaign, or weekly update. A source clip with general gestures and expressions can provide the same real on-camera presence for several scripts. You change the words without asking the person to perform each version again. The benefit is especially practical when camera access, location, or production time is limited.
Use text mode when the written message is ready but the final spoken recording does not exist. You can choose a preset voice or, with permission, clone a voice from a short reference. If you already have the exact spoken take and want to preserve its delivery, follow the uploaded-audio workflow instead.
Prepare a different-language version
Text mode can also speak a reviewed translation in a suitable voice. Translate and check names, numbers, meaning, and tone before entering the script; lip sync does not translate the source speech for you. The AI video dubbing guide covers that language-specific workflow in detail.
Start with a source performance that fits many lines
The source video supplies the person's filmed movement, expression, and framing. It does not have to contain the replacement words. This example reuses a 5.06-second talking clip; its separate text-and-voice result is about 10 seconds long. The source is also used in the uploaded-audio tutorial, making the difference between the two input methods easier to compare.
Choose footage you own or have permission to edit into a new spoken performance. A short clip can be useful if its gestures and expressions are natural enough to suit different messages. Length alone is not the deciding factor, and you do not need to stage a rigid, straight-on mouth close-up. This video-input workflow can handle footage that is difficult for conventional lip-sync methods; judge the full performance rather than excluding a clip because the head turns or the mouth is briefly less clear.
The more important question is whether the original action supports the meaning of the new script. Ordinary shifts in posture or conversational gestures are versatile. Pointing to a particular product, reacting to a surprise, or visibly counting on your fingers is tied to a specific line. Those actions may look out of place under unrelated words.
The video workflow keeps the source's body movement and expressions while changing the speech synchronization. It does not create a new physical performance. If you want the movement and expression generated from an image instead, that is a different route through the Max image model and takes longer. For a realistic talking-video rewrite, begin with a filmed performance that already feels right for the message.
Write the new line and choose its voice
Prepare the exact words you want spoken before generating. For a factual correction, check the updated date, product name, amount, and pronunciation. For repeated versions, keep a separate approved script for each result so that reviewers can compare the final speech with the intended text.
Text to Video Lip Sync gives you two voice paths: select a preset voice, or upload or record a short reference to clone a voice you are authorized to use. A reference sample establishes the voice; it is not the final line that the result must copy. The existing example uses this approximately 16-second reference:
Voice reference input
For example, a presenter could replace an outdated sentence with: “The workshop now starts at 10 a.m. on Friday.” That line illustrates the writing step; it is not a transcript of the archived demo below.
Generate and review the result
Open Text to Video Lip Sync, upload the source video, choose a preset or authorized cloned voice, paste the new line, and generate. Compare the finished speech with your approved script. Then watch the whole result with attention to how the original expressions and gestures fit the new message.
Here is the existing short example generated from the source clip, a voice reference, and text input. It demonstrates the text-and-voice path, not a long-form output or a complete production walkthrough:
Open the dedicated watch page for this result
The source and result do not need identical durations. For a longer script, review the generated speech and the repeated or selected parts of the filmed performance, especially where an original gesture becomes conspicuous. The uploaded-audio example provides a separately verified five-second source and 39-second result if you want to inspect that duration difference directly.
Frequently asked questions
Do I need to say the new script in the source video?
No. The source provides the person's filmed movement and expression. Type the replacement words separately, then choose a voice for the generated speech.
Do I have to clone a voice?
No. This example uses a voice reference, but you can select a preset voice. Only clone a voice you own or have permission to use.
When should I upload audio instead of typing text?
Choose text when the script is ready but the final spoken take is not. Choose Audio to Video Lip Sync when you already have a finished recording whose timing, pronunciation, and performance you want the result to follow.
Can I reuse one source for several scripts?
Yes. Natural, general movement and expressions make a source more reusable. Review every version so that the filmed actions still fit its new words.
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