Summary  
This chapter explains how to structure prompts for built-in audio in a multimedia generation system by adding an “Audio:” line that specifies ambient sounds, effects, dialogue, or music.

General domain of usage  
AI-powered video generation and editing

Veo 3.1 generates sound as part of the video, not as a separate step. Describe audio the same way you describe visuals — just add an "Audio:" line.

```prompt
Audio: soft rain ambience, distant thunder, a woman quietly humming.
```

You can prompt for:
- **Ambient sound** — rain, traffic, wind
- **Sound effects** — footsteps, a door closing
- **Dialogue** — short spoken lines, synced to lip movement
- **Music** — a simple mood cue like "soft piano in the background"



Keep dialogue short — one sentence or less. Long spoken lines are harder for the model to sync accurately with lip movement.

Note

AI video generation has moved from novelty to everyday creative tool — and Google Veo 3.1 is currently the most capable model you can access for free. This mini-course teaches you to go from a blank prompt box to a finished, publish-ready video clip. Across 10 short lessons, you'll learn to write prompts that actually work, generate built-in dialogue and sound effects, keep the same character consistent across multiple shots, and export the right format for YouTube, TikTok, or Instagram. No editing software or technical background required — just a browser and an idea.

Prompting for Built-In Audio