Upload audio or video → audio extracted on-device → transcribed by a Gemini model → play back with live captions. 100% client-side.
Keys stay in this page on your device. This is a private link — don't share it.
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Export:
How to get a Google Client ID (one-time, ~2 min)
1. Open Google Cloud Console and create a project (any name).
2. APIs & Services → OAuth consent screen → External → enter app name + your email → save.
3. Credentials → Create Credentials → OAuth client ID → Web application.
4. Under "Authorized JavaScript origins" add: https://transcribe-tester.pages.dev → Create.
5. Copy the Client ID and paste it when the app asks — it's saved on your device.