Help

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)

Step-by-step help for AI Video Translator. Each page says which platform and app version it applies to.

• Getting started: Install the app, answer the first-launch questions, then take one video from transcription through editing, translation and voices to an exported file, with the exact free-tier allowance.
• Apple Intelligence unavailable: What to check when Apple Foundation Models reports that Apple Intelligence is not available on this Mac, and which other provider to use instead.
• App basics: What to click first, what words like transcription, segment, model, provider and API key mean, whether it costs money, whether it is safe, whether you need the internet, how long it takes and where the finished video goes.
• Providers and API keys: Which AI services the app can use for transcription, translation and voices, which of them need your own API key, how to add, check, change or remove a key, how keys are stored, and how to use a local OpenAI-compatible server such as LM Studio or Ollama.
• On-device models: The downloadable on-device models for transcription, translation, voices and source separation with their approximate sizes, what the badges mean, memory and GPU use on Windows and Mac, the hardware compatibility test, where models are stored, and how downloads, resuming and deleting work.
• Apple features: How the Mac app uses Apple's on-device speech recognition, Apple Foundation Models and Apple Translation, and Apple system voices, which macOS versions they need, how to install missing languages and voices, what stays on your Mac, and how Help works with Apple Intelligence and Siri, and video translation works in Shortcuts.
• Voices and speakers: How to give each speaker in a video their own voice, how automatic speaker detection (diarization) works, voice speed, voice tags, what happens when a translated line is longer than the original, and how to regenerate the voice of a single line.
• Editing and translation: How to correct the transcript and translation, change segment timing, add, merge and delete segments, use undo and history, translate everything or only what is missing, and improve accuracy with the project context, glossary and terms fields.
• Export and audio tracks: What Create Final Video produces, where the file is saved, output formats and audio codecs on Windows and Mac, adding the dub as a second audio track or replacing the original, keeping background music with source separation, and what the export checks before it starts.
• Local MCP assistant: Connect an assistant, inspect and edit projects, explicitly translate, voice, retranscribe or export, track jobs, and understand costs, file access and consent.
• Privacy and data: What stays on your computer and what can leave it, how to use the app on-device only, usage statistics and crash reports and how to turn them off, where projects, models, settings and keys are stored, how to delete everything, and notes for company IT.
• Subscription and free tier: Exactly what the free tier includes, what the subscription adds, plans and prices, trials, watermarks, commercial use, Windows versus Mac purchases, restoring and managing a subscription, and what to do when a purchase does not show as active.
• Troubleshooting: What common messages mean and what to do, including FFmpeg on Windows, missing or moved files, disk space, memory, model downloads, network and certificate errors, no speech found, a slow computer, and how to send a report with the app log.
• What's new: Changes by app version, as shown in the app’s What’s New dialog.

Terms, privacy and support are in the legal page.