For launch dates, product names, and offer changes
Update a product demo video without reshooting the presenter.
When a launch date, product name, or offer changes after filming, a new audio line can keep a usable presenter segment from becoming outdated.
Try the free previewBring an audio track you own. No account required for the free preview.
What the sample proves
Same presenter. Updated product name.
This finished A/B pair changes only the named product. It demonstrates the kind of focused replacement this workflow is built for — not an entire screen-recording edit.
Three steps
Bring the inputs. Keep control of the words.
Isolate the presenter segment
Use one clear speaker segment from the product video, 3 seconds to 5 minutes long.
Prepare approved copy as audio
Record the replacement line or bring an audio track you own.
Replace, review, publish
Generate the lipsynced result, check it, and use the downloaded MP4 in your edit.
A good fit
Use it when
- A changed shipping date, version, product name, or offer
- A talking presenter segment already worth keeping
- A short final check before publishing
Keep in mind
Not the right tool for
- Editing the product UI shown on screen
- Writing new launch copy or generating a voice
- Replacing multiple speakers in a demo
Use cases
Find the right starting point
Every workflow starts with the same two inputs: one clear speaker and audio you are authorized to use.
Change words in a video
Got one outdated number, name, date, or sentence in an otherwise good recording? Bring a replacement audio line and match the mouth to it.
See how it works Use caseUpdate a product demo video
When a launch date, product name, or offer changes after filming, a new audio line can keep a usable presenter segment from becoming outdated.
See how it works Use caseReplace a video voiceover
LipSync is for the point after you already have both inputs: an existing talking video and a new, authorized voice track that should appear to be spoken on camera.
See how it works Use caseLip sync an AI presenter video
If you already have a clean, single-speaker AI presenter video, you can bring it together with approved replacement audio. LipSync does not create the presenter or the voice.
See how it works