How to change a date you said in a video so you can post it again
Give Vizard Agent the old date and the new one. It clones your voice for the replacement, lip-syncs the second or so where you say it, swaps the burnt-in caption showing the same date, and places the cuts at the quietest points in the audio so the join cannot be heard.
What do you type into Vizard Agent?
Give both phrasings, not just the two dates. Vizard Agent regenerates the whole phrase rather than a single word, because a word spliced into the middle of a sentence sounds spliced however good the clone is. Say whether the date is also written on screen, and name the parts that must not change.
Prompt
What does Vizard Agent actually do?
It changes the date everywhere it appears, not just in the voice. A corrected voice over an uncorrected caption fools nobody, and a cut in a talking head draws the eye, so every join is placed at measured silence and then covered. In the session behind this article it:
- Transcribed an 18.01-second, 744x1280, 60fps announcement to find the exact word timings for the date, and analysed the speech for stutters, fillers and awkward pauses.
- Cloned the speaker's voice on two different engines, generated the new date and a longer phrasing so the replacement would flow, and analysed the cloned audio for naturalness.
- Found the burnt-in subtitle box's exact coordinates and saved crops every tenth of a second to find precisely when it was on screen.
- Lip-synced the 1.3-second segment to the cloned line, then overlaid a replacement subtitle card in a matching typeface on the exact frames where the old one appeared.
- Placed the cuts at low-energy points measured to the sub-millisecond, added audio fades to kill a pop, and put a 10% zoom punch-in over the join.
When does this not work well?
Replacing speech inside a recording is delicate, and the limits are all about how much has to change. A whole sentence is a re-record, and Vizard Agent will say so rather than deliver something that sounds re-dubbed. Noisy source audio, fast or overlapping speech with little silence to cut at, and heavily compressed audio all make a splice harder to hide.
Common questions
Will it sound like me? It clones your voice from the video itself. Vizard Agent tests the result before using it.
Does the mouth get fixed too? Yes. Vizard Agent lip-syncs just the segment where the words changed.
How much can I change? A word or a short phrase. Vizard Agent will say when a change needs a re-record instead.