How AI Subtitle Translation Works: the Deepgram + Gemini Two-Phase Pipeline

A single AI model rarely does both transcription and translation well. SublyAI splits the work into two specialized phases.

Phase 1 — Deepgram transcription

Deepgram produces a word-level accurate transcript with precise timestamps. This timing is the foundation of clean subtitles.

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Word-level timestamps from Phase 1

Google Gemini refines the text for the target language and readability, keeping the original timestamps intact — no drift.

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Explainer: two-phase subtitle pipeline