Ambar
English · American
Education · Feminine
American female voice, professional and bright, built for lessons and walkthroughs.
en-US
ProfessionalBrightWarm
0:13
#course#explainer#training
Use this voiceGuide
How to Change the Voice in a Video
If your video is already edited and exported, you do not have to record the voice again. This guide explains how to replace the spoken voice in a finished video with MirrorVox, what happens to the file, and what you can upload.
Step by step
How to change the voice in a video
Three steps. Nothing to re-edit, nothing to re-cut.
- 01
Upload your finished video
Start from the MP4 or MOV you already exported. MirrorVox reads the spoken audio directly from that file.
- 02
Choose a voice
Play the previews in the voice library and pick the voice that fits the video, or select a voice you cloned in your own account.
- 03
Transform and download
MirrorVox generates the new voice, puts it back on your video and gives you an MP4 you can play and download.
The problem it solves
Change the Voice Without Re-recording
The usual way to fix a voice is to record the script again and rebuild the edit around the new take. That means another recording session, another sync pass and another export. MirrorVox starts from the file you already finished: you keep the cut you approved and change only the voice that speaks it.
- No new recording session for a script you already delivered.
- No re-editing: you upload the exported file, not the project.
- The wording and the original language stay as they are — this is a voice change, not a translation or a rewrite.
- You can try a different voice on the same video whenever you want.
What happens to the file
What Happens to the Original Video?
MirrorVox works on the spoken audio of the video you upload and returns a new MP4 with that voice replaced. The picture you edited is not re-rendered creatively: resolution, aspect ratio, frame rate and duration are preserved, and no watermark is added to the result.
- Image
- Kept as you exported it
- Resolution and aspect ratio
- Preserved
- Frame rate
- Preserved
- Duration
- Unchanged
- Spoken voice
- Replaced by the voice you chose
- Result
- MP4 download, no watermark
Limits
Which Videos Can I Upload?
These are the limits MirrorVox accepts today. Files outside them are rejected before the conversion starts.
- Formats
- MP4 and MOV
- Maximum length
- 3 minutes per video
- Maximum size
- 500 MB per file
- Free trial
- One conversion of up to 3 minutes
Your own voice
Can I Use My Own Voice?
Yes. Besides the library voices, you can clone your own voice from your account, with your authorisation, and use it on your videos. A cloned voice is private to the account that created it and can be selected like any other voice once it is ready.
Create Your Own VoiceVoices
Listen before you choose
Every voice in the library has a short preview, so you can hear how it sounds on your video before you spend a single minute.
Atlas
English · American
Narration · Masculine
Deep and composed. Built for documentary narration and long-form storytelling.
en-US
DeepCalmCinematic
0:14
#documentary#voiceover#long-form
Use this voiceAvena
English · British
Narration · Feminine
British female voice with a velvety, composed delivery for long-form narration.
en-GB
VelvetyComposedClear
0:14
#narration#long-form#story
Use this voiceReasons
Why Change the Voice in a Finished Video?
Fixing a performance
The edit works, but the delivery of the voice does not. Replace the voice instead of reopening the timeline.
Changing the voice without re-recording
The script has not changed, so there is no reason to book another session just to say the same words again.
Trying another voice
Hear how the same cut lands with a different narrator before you decide what to publish.
Using a cloned voice you own
Apply the voice you cloned in your account to the videos you produce, without recording each one.
Prefer to just do it? Use the MirrorVox video voice changer
FAQ
Questions about changing a voice
The conversion runs while you wait, with a progress indicator, and the time depends on the length of the video. Videos are limited to 3 minutes, so a conversion covers at most three minutes of audio.
No. You upload the finished MP4 or MOV you already exported. MirrorVox reads the spoken audio from that file, so there is nothing to re-link or re-edit.
Not today. A conversion applies the chosen voice to the whole video you upload. If you only need one section, upload that section as its own file.
Your first conversion, of up to 3 minutes, is free. After that, conversions consume the minutes included in your plan, and you can buy additional minutes if you run out.
No. The wording and the original language are kept. MirrorVox replaces the voice speaking the script, it does not translate or rewrite it.
You get the same video with the new voice as an MP4 you can play and download, with no watermark, and the conversion stays in your history.
Your video is finished. The voice does not have to be.
Upload the file you already exported, pick a voice and download the result.
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