Getting started

This help describes AI Video Translator 1.39.0. If you are helping someone and do not know which version they use, ask them to open Settings → About App and read App Version (for example 1.39.0+3; use the part before +). Help for another version: https://aivideotranslator.app/docs/<version>/llms-full.txt (replace <version>; the list of published versions is in https://aivideotranslator.app/llms.txt)

You can turn the speech in your video into another language: first transcribe it, then translate the words and make voices for them. Export gives you a new video, so your original stays unchanged. If these terms are new to you, App basics explains them.

Before you start

All you need to start is the app and a video file. You can run every processing step on your computer, or choose cloud providers if you want them.

On Windows, you get the app from Microsoft Store and need 64-bit Windows 10 or 11. On Mac, you get it from the Mac App Store and need Apple Silicon with macOS 15 or later.

If you want Apple's speech recognition or translation, you'll need macOS 26 or later and supported hardware; Apple features explains the requirements. If its language model isn't ready, Apple Intelligence unavailable explains what to check. You don't need an app account, and we never receive your video.

Finish the first setup

During setup, you choose your language, privacy settings and where to keep your work. You can decline cloud services and skip the hardware test.

1. Choose your language.
2. Choose your theme.
3. Continue past the welcome screen.
4. Choose “Share usage statistics” or “Skip”.
5. To allow cloud providers, choose “I agree”.
6. To use local providers only, choose “I don't agree”.
7. If you declined, confirm with “Use on-device only”.
8. Choose your projects folder.
9. Choose a models folder, or leave that field empty for the default.
10. Run or skip the hardware compatibility test.
11. To try the guided café demo, choose “Dub the demo”.
12. To continue with your own video, choose “Skip — I'll use my own video”.

If you share usage statistics, they never include your media, filenames, transcripts, translations or API keys. You can change your privacy choices later in “Settings”, under “About App”.

The app suggests AI Video Translator in Documents for your projects and creates that folder if you keep it. If you choose or type a different folder, it must already exist and let the app write files there.

You can choose a different folder with “Browse for Folder”. Keep models outside OneDrive, Dropbox or iCloud Drive, because syncing can interrupt their installation; On-device models covers downloads and storage.

You don't need an account or API key for the demo. It shows you the download size before starting and only downloads models you haven't installed yet.

You can use Apple's local providers or a translation server on your own computer without allowing external services. A server on another computer on your network needs your consent; Privacy and data explains what can leave your computer.

Create a project

Your project keeps one video's transcript, translation and voices together. New projects start with local models, so you can begin without a cloud account.

1. Choose “Add New Project”.
2. On “General”, enter a “Project Name”.
3. Set “Video Path” to your file.
4. Choose the language spoken in the video.
5. Choose the language you want in the finished video.
6. On “Transcription”, choose a provider.
7. Choose its model.
8. On “Translation”, choose a provider.
9. Choose its model.
10. Choose “Create”.

You'll also find the speaker voice table on “General”. Windows starts with Whisper Base and Qwen3.5 0.8B; on Mac, the defaults can use Apple's providers if your languages and system support them.

If a model isn't installed, you'll see “Download required before use”. You can install it beforehand in “AI Providers”, under “Manage Models”; Providers and API keys explains the other provider choices.

Transcribe and correct the words

When you transcribe, the app writes down the speech in short segments with start and end times. Fixing any wrong words now keeps those mistakes out of your translation.

If the app can't find speech or read your video, Troubleshooting explains what you can try.

1. Choose “Transcribe Video”.
2. When the text appears, click an original-text field.
3. Correct any wrong words.

Translate the text

You can translate your project's text with “Auto-Translate”. Before you make voices, you can correct anything that doesn't read right.

1. Choose “Auto-Translate”.
2. If asked, choose “Translate All” or “Only Untranslated”.
3. Correct any wrong translations.

If you want to keep your existing translations and edits, choose “Only Untranslated”. “Translate All” replaces them; Editing and translation explains how to improve the wording.

Generate voices

You choose each speaker's voice on the project's “General” tab. New speakers start with an on-device voice if one supports your target language.

1. In the speaker table, choose the voices you want.
2. Save the project settings.
3. Choose “Generate Voices”.

If you change a translation or voice setting, the app makes a new voice for that line the next time you generate it. It keeps voices you haven't changed, so you don't pay for them twice; Voices and speakers explains how to redo just one line.

Export the video

You make the finished video with “Create Final Video”, which keeps your picture quality. Before it can start, the segments included in the export need translations and voices.

1. Choose “Create Final Video”.
2. If a translation or voice is missing, finish the work the app identifies.
3. If a speaker has no voice, choose one in project settings.
4. When rendering finishes, choose a destination in the save window.
5. Choose “Save Translated Video”.

The app suggests your original filename with _translated added. It copies the picture without re-encoding; Export and audio tracks explains where the file goes and how to keep background sound.

Once you have a transcript, you'll see “Transcribe”, “Auto-Translate”, “Generate Voices” and “Create Final Video” in the bottom bar. If you've selected segments, clear the selection to see these steps. In a narrow window, they're icons with the same names in tooltips.

Understand the free limit

You get every feature in the free version, and your export dubs the first 10 segments in order of start time. The video keeps its full length, and only those first 10 segments need translations and voices.

New projects have source separation and background overlay on, so you still hear background sound after the tenth segment. If you replace the original audio and turn background overlay off, that later part is silent.

With a subscription, you can dub every segment. Neither tier adds a watermark, and you pay cloud-provider charges separately; Subscription and free tier explains the plans.

Your purchase belongs to the store where you installed the app. A purchase in one store doesn't unlock the other platform; the subscription terms cover this.