# Re-voice and audio in a video What you can do about the voice and sound of a video today: lip sync at creation, and the Audio tools to change a voice, dub or clean a recording. Source: https://infinall.ai/docs/video/re-voice-and-audio Last checked: 2026-10-26 ## What it is There is no **Re-voice** button on a finished video card. This page says what you can do today to change the voice or sound of a video, and which Audio tools work on a recording you bring. ## Who can use it Pro only. Video is part of the Pro plan, and accounts on a trial get the Pro audio features. The backend checks your plan for the voice changer, dubbing and noise removal, and for making videos. On Free, these modes show a **Pro** badge. ## Cost Uses credits. The voice changer, dubbing and noise removal are charged by the length of your file, and a hold is taken first. Lip sync is part of the video price. See [Price before you confirm](/docs/credits/price-before-you-confirm). ## Where to find it For lip sync, use the video composer. For the other tools, open the Audio tab on Home or Audio mode in a Studio project, press the mode chip and look under **Edit audio**. ## Buttons and controls | # | Name in the app | What it does | Plan | | --- | --- | --- | --- | | 1 | Lip sync | A switch in the video composer. Turns on your avatar's voice with matching lips. See [Voice](/docs/video/voice). | Pro | | 2 | Voice changer | In **Edit audio**. Re-voices a recording in another voice. Its subtitle reads "Re-voice a recording". The button reads **Change voice**. | Pro | | 3 | Dub a video | In **Edit audio**. Makes your video or audio in another language. Its subtitle reads "Your video in another language". The button reads **Dub it**. | Pro | | 4 | Remove noise | In **Edit audio**. Keeps the voice and drops the background. The button reads **Clean it**. | Pro | | | Dub into (language) | A language picker that shows with **Dub a video**. It has a search box, "Search language...". | Pro | | | Re-voice | A button on a finished audio take. It does not show on video cards. | Pro | ## How to turn on your voice for a new video 1. Pick your avatar in the plus menu. 2. Pick a model that shows the **Lip sync** switch. 3. Turn **Lip sync** on, then press **Create video**. To change the voice of a video you already made, make a new one with the setting you want. See [Edit a finished video](/docs/video/edit-a-finished-video) for what a chat change can and cannot do. ## How to dub a video into another language 1. Open Audio mode and press the mode chip. 2. Under **Edit audio**, choose **Dub a video**. 3. Upload your video or audio file. 4. Choose the language in **Dub into**. 5. Press **Dub it**. The result appears as a new card. ## How to change the voice in a recording 1. Open Audio mode and choose **Voice changer** under **Edit audio**. 2. Upload an audio recording. 3. Pick the voice you want. 4. Press **Change voice**. The result appears as a new take. ## How to remove background noise 1. Open Audio mode and choose **Remove noise** under **Edit audio**. 2. Upload an audio recording. 3. Press **Clean it**. ## How to add your own narration or music 1. Press the plus button in the composer and choose **Add photos & files**. 2. Pick an audio file. 3. In **Role for (file name)**, choose **narration** for a spoken recording, or **music_bed** for background music. 4. Tick the rights and consent box and press **Create video**. Your recording is mixed with the footage. A narration recording does not match the lips of a person on screen, so use **Lip sync** for that. ## Options explained **What works on a video.** Only **Dub a video** takes a video file. **Voice changer** and **Remove noise** take audio files. To use them on the sound of a video, you need the audio as its own file. **What the dub makes.** If you upload a video, the result is a dubbed video. If you upload audio, the result is dubbed audio. **Re-voice on an audio take.** A finished audio take has a **Re-voice** panel with Voice, Style, Speed and Pitch. It makes a new take from the same words and keeps the original. It does not show for video. **Lip sync on or off.** On: your avatar speaks in your voice and the lips match, and the model's own music is replaced by our music track. Off: the model keeps its own voice, music and sound. **Captions and subtitles.** For text of what is said, see [Captions and transcription](/docs/audio/captions-and-transcription). ## Limits - A file for the voice changer, dubbing or noise removal can be up to 50 MB. - Dubbing is limited to 10 minutes per file. - Noise removal needs at least 5 seconds of audio. ## When something goes wrong | Message in the app | What it means | What to do | | --- | --- | --- | | Premium voices, music, sound effects, voice changer, noise removal, voice cloning and dubbing are Pro features. Upgrade to Pro to use them. | Your account is not on Pro. | Upgrade in Billing. | | Dubbing is limited to 10 minutes per file. | The file is too long. | Cut it shorter. | | Noise removal needs at least 5 seconds of audio. | The recording is too short. | Use a longer one. | | Could not read that file. | The file could not be read. | Try another file. | | That file type isn't supported. Upload audio (MP3, WAV, M4A, OGG) or video (MP4, MOV, WEBM). | The file type is not accepted. | Use one of the listed types. | | That file is empty. | The file has no content. | Pick another file. | | No audio came back. You have not been charged. | A re-voice returned nothing. | Try again. | | Couldn't re-voice that take. | A re-voice failed. | Try again. | ## Questions ### Can I change the voice of a video I already made? Not with a button or a chat message today. Make a new video with the avatar and the **Lip sync** setting you want. For audio-only changes, use the tools above on a recording. ### Can I add my own music or narration to a video? Yes, when you create it. Attach an audio file with the plus button and set its role to **narration** or **music_bed**. See the section on your own audio above. You cannot add it to a video that is already finished. ### Can I dub my finished video? Yes. Save the video, then upload it to **Dub a video** in Audio mode. It makes a new file in the language you pick. ### Does the voice changer work on a video file? It takes audio files. Use **Dub a video** for a video, or take the audio out first. ### Is there an audio mixer for video? The Mix with music panel is on audio cards, not on video cards.