polyshThinking out loud
"So this is, um, where you'd, actually let me go back to Billing first…"
AI voiceover for screen recordings, timed to every click
Polysh rewrites what you said into a clear script, reads it with an AI voice, and re-times your footage one sentence at a time. Nothing is re-recorded.
Free during early access.
Good footage, rough audio
The screens are right. The sound isn't, and re-recording means getting every click right again.
Dead air
Six seconds of silence while the plan options load.
Room noise
A laptop fan, a notification sound, and a mic that is too far away.
How Polysh re-voices a screen recording
- 1
Transcribe
Polysh transcribes your speech and notes when each word was said.
- 2
Rewrite
AI turns it into clear sentences, keeping every step in the order you did it.
- 3
Voice
Preview an AI voice. It reads only the script you approved.
- 4
Re-sync
Each part of the footage is fitted to the sentence that describes it.
Example: change your billing plan
| Stage | What you get |
|---|---|
| Transcript | "OK so, Billing is, um, here, and you'd pick, uh, the yearly one I think it's called Annual…" |
| Script | "Open Billing. Choose Annual, then select Update plan." |
| Video | The click on Update plan lands as "Update plan" is spoken. |
Why the timing holds
Voiceover synced per sentence, not stretched
New narration is rarely the same length as the old. Stretching the whole video to fit lets clicks drift away from their words.
Stretching the whole video
- One speed for everything. A click a third of the way through your take plays a third of the way through the new audio, whether the narrator has reached it or not.
Re-timing each sentence
- Polysh measures where each sentence starts and ends in the new voiceover, then speeds up or slows down the matching piece of footage, so each click stays inside its sentence.
Every line is yours to change
The rewrite is a draft. Read it beside the video and change any line before it's voiced.
Pick a style
Professional, casual, or technical. Regenerate if it doesn't sound like your team.
Edit line by line
Reword, split a sentence, or add the warning you forgot to say. Each line stays tied to its part of the video.
Keep your terms
The team word list keeps product names and acronyms spelled and pronounced your way.
Fix one line, not the whole video
After an edit, only the narration around that sentence is voiced again.
Auto zoom that lands on the click
Record with the Polysh recorder and each click becomes a zoom. Because the video is re-timed per sentence, the zoom arrives as the narrator names the button.
On or off for the whole video
Turn auto zoom off if the screen is already easy to read.
On or off per click
Skip the zoom on a click that doesn't matter, right from the timeline.
Also in the editor
- Trims and skips
- Filler words highlighted
- Captions (SRT, VTT) from the approved script
- Gradient or solid background
- Background music that dips under the voice
- Playback speed presets
- MP4 at 1080p, 720p, or 480p
Voiceover and sync questions
Does Polysh change my original recording?
No. The voice, trims, zooms, and timing are applied on export. The file you recorded or uploaded stays as it was.
What if I didn't say anything while recording?
Write the script yourself in the editor, and Polysh voices and times it.
Can I keep my own audio?
Polysh is built to replace rough narration. If your audio is already good, the trims, zooms, and captions may be all you need.
Do I need the Polysh recorder?
No. Any MP4 works for the script, voice, sync, and captions. The recorder adds the click log that gives a zoom on each click.
How are credits charged?
You see an estimate first. Credits are charged only when the export succeeds and returned if it fails or you cancel. See how pricing works.
Related free tools
Voiceover Duration Calculator
Know how long your narration will run before you record it.
Open toolWords per Minute Calculator
Measure your speaking pace in words per minute and see how it rates.
Open toolScript Length Checker
Find out whether your script fits the target length and what to change.
Open toolSRT to VTT
Turn an SRT subtitle file into a WebVTT file that HTML5 players accept.
Open toolBring the take you almost deleted
Run your next walkthrough through Polysh. Founding teams keep their rate.