Video Narration

Add professional voiceover to a video. Analyze the video, write or refine a timed script, generate speech via Azure TTS or Gemini 3.1 Flash TTS, and merge — producing a narrated video where audio and visuals stay in sync.

Input: $ARGUMENTS

Additional resources

• Voice table and timing estimates: references/voices.md
• Gemini TTS API and AI Studio request shape: references/gemini-tts.md
• Python script template: scripts/narration_script_template.py — copy into the video's directory as narration_script.py and fill in the placeholders

Phase 0: Setup

Provider

Default to azure unless the user explicitly asks for Gemini or already has GEMINI_API_KEY configured. When using Gemini, use the official Gemini TTS request pattern documented in references/gemini-tts.md.