Fit narration to a video's exact length

Your cut is locked at 22.4 seconds but the voiceover runs 26? Set the target to your video's duration and Audio2Time returns narration that fills it exactly — silences trimmed, tempo nudged without changing pitch. Upload the audio, or the video itself (only its audio is used). Free, no signup.

Lock the picture, fit the read to it

Editors and motion designers hit this constantly: the edit is timed, but the narration doesn't match the frame. Rerecording or nudging clips by hand is slow. Audio2Time fixes the audio instead — it removes the pauses first, then applies a small pitch-preserving tempo change so the read lands on the exact duration of your cut. Drop the result back on the timeline and it fills the shot end to end.

Perfect for

Matching VO to a locked edit Reels / TikTok / Shorts durations Explainer & product videos E-learning slides Trailers and promos

Frequently asked questions

How do I match a voiceover to a video's length?

Read the video's exact duration in your editor, set it as the target here, and upload the narration. The output matches that length exactly.

Can I upload the video itself?

Yes — MP4 or MOV; only the audio track is used. Or upload the standalone audio file.

Will it stay in sync with the picture?

The output is the exact target length and pacing stays natural, so it fills the clip end to end.

Fit your narration now →

Related: fit a voiceover to exactly 30 seconds · shorten a voiceover without changing pitch