Free AI narration audio tool

Voiceover for Video

Time narration to your footage without uploading files. Generate voices or drop in clips, check the timing in your browser, and export audio for your editor.

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Audio-only video voiceover builder

Time narration against your video

Video stays on this device

Upload a video for timing, add generated or recorded narration, then download WAV, MP3, SRT, or a cue sheet. This tool does not render a video file.

1. Load the reference video

2. Add narration

One generated clip at a time0 / 5,000

3. Preview and export audio

Set original audio to 0% to replace it. Mixing depends on whether your browser can decode the video's audio track.

Project status

Load a video and add narration to begin.

No video output: import the downloaded audio into CapCut, Premiere Pro, DaVinci Resolve, Final Cut Pro, or another video editor.

What it does

Build your soundtrack before opening your editor

Timing is much simpler with reference video, but your footage never needs to leave your computer. Line up narration clips with the picture, adjust background sound levels, and export a clean track ready to drop straight onto your timeline.

Related use cases

YouTube voiceover Instagram voiceover TikTok voiceover
The quick answer

This tool creates audio tracks, not finished videos. Your footage stays private in your browser purely for timing. You download WAV or MP3 audio, SRT subtitle files, and cues ready for your video editor.

Step by step

How to create a voiceover for video

  1. 01

    Select a reference video

    Pick an MP4, MOV, or WebM clip. Your browser checks the running time locally, so nothing gets uploaded.

  2. 02

    Add your narration clips

    Turn text into speech or add your own audio files. Adjust start times, trim ends, reorder clips, and balance volume levels.

  3. 03

    Check the timing

    Play your reference video to check how the voiceover lines up. You can keep the original audio, mute it, or lower the level while narration plays.

  4. 04

    Download audio and cue files

    Download WAV or MP3 files, along with SRT, CSV, and JSON timing markers. Then drop the audio into your video editor to finish up.

FAQ

Frequently asked questions: video voiceovers

01

Does this tool export a finished video?

No. It exports only voiceover audio and timing files. Your video stays local and acts as a timing reference. To complete your cut, drop the downloaded audio into editing software like CapCut, Premiere Pro, DaVinci Resolve, or Final Cut Pro.
02

Is my video uploaded anywhere?

No. Your browser opens the video directly from your device. In cloud mode, only the voiceover text is sent for speech generation. In-browser mode keeps both your script and the generated audio entirely on your device.
03

Can I keep the original video's audio?

Yes, provided your browser can decode the sound track. You can adjust the level, use auto-ducking to quieten it during speech, or mute it completely if you only want the voiceover.
04

What happens if the voiceover runs longer than the video?

The tool highlights the overrun and pauses the timed audio export. You can adjust the start time, trim the clip, or regenerate a quicker read. The standalone voiceover audio remains available to download.
05

What file formats can I use?

Reference videos can be MP4, MOV, or WebM, up to 200 MB and 10 minutes long. Audio uploads support WAV, MP3, M4A, AAC, or OGG, as long as your browser handles the format.
06

What do the cue files include?

The cue download gives you a CSV timing sheet and a JSON project manifest. Each entry includes the clip name, script text, start and end points, trim boundaries, and playback volume.

Still wondering? Get in touch →

Keep going

Script to sound ↗

Text to WAV

Produce lossless voiceover files ready for your editing timeline.

Subtitles and captions ↗

SRT to Speech

Convert subtitle cues into timed spoken audio.

Creator workflow ↗

YouTube Voiceover

Plan and produce narration section by section.

Short-form video ↗

TikTok Text to Speech

Create quick voiceovers for vertical video.