Choose a source language, upload your video, and get a full English text + translation instantly
What does this tool do?
This free, browser-based app transcribes and translates Japanese or Korean video and audio files directly to English using OpenAI Whisper (speech recognition) and GPT-4o (translation). Your files are never stored on any server — processing goes directly from your browser to the OpenAI API using your own key.
✅ Supports mp4, mov, avi, webm, mp3, m4a and more
✅ Max file size: 25 MB (Whisper API limit)
✅ 100% private — no file upload to any third-party server
✅ Copy transcript and translation to clipboard with one click
✅ Works offline-ready as a standalone HTML file
🌐 Source Language (Video Language)
🔑 OpenAI API Key
ℹ️ Your API key is used only in your browser and is never sent to any server other than OpenAI.
Max file size: 25 MB (Whisper API limit) · Supported formats: mp4, mov, avi, webm, mp3, m4a, etc.