Omni · Advanced Omni Tricks
Directing the Sound
Direct audio to match your vision
Directing the Sound
So far, you've learned to work with visuals. But there's another dimension that affects your final result: sound.
In this lesson, you'll learn how to direct the audio in your videos — from ambient noise to spoken dialogue — instead of leaving those decisions to Omni.
Why Sound Matters
Until now, Omni has generated audio automatically for every video you created.
However, you can direct the audio yourself and control the mood, realism, and emotional impact.
Choose one
Why do you think directing audio is important instead of letting Omni decide?
Think about memorable movie scenes:
- Rain hitting a window
- Distant thunder
- A door slowly creaking open
These sounds create atmosphere and emotion just as much as visuals. And, you can design it in Omni!
How to Direct Audio
Directing sound in Omni works the same way as directing visuals: you describe what you want in the prompt.
The format is straightforward. Add phrases like:
- Ambient noise: [description]
- SFX: [specific sound effect]
- [Subject] says, "[phrase]"
Let's break down each type.
Sound Type 1: Ambient Noise
Ambient noise is the background sound that fills a space — the hum of an office, birds chirping in a forest, distant traffic on a city street.
Ambient sound tells viewers where they are before they consciously process the visuals.
Choose one
What happens when you don't specify ambient noise in your prompt?
To control ambient sound, use this prompt: "Ambient noise: [specific sound]."
practice preview
Interactive practice
Fill in the blank
Complete this prompt to create a realistic café atmosphere.
Great! See how the ambient sound completes the scene? Without it, the café would feel unnaturally quiet. With it, the scene feels real.
This works for any environment — busy streets, quiet libraries, bustling markets, peaceful parks.
Sound Type 2: Sound Effects (SFX)
Sound effects are specific, noticeable sounds tied to actions — a door closing, footsteps on gravel, wind rustling leaves, a car engine starting.
SFX adds realism to your video.
The key is being specific:
- "Wind blowing" is vague.
- "SFX: strong wind rattling window panes" tells Omni exactly what you want to hear.
So, the prompt format for this type is: "SFX: [specific sound effect]."
practice preview
Interactive practice
Fill in the blank
Complete this prompt to add realistic sound effects.
The sound details place the viewer inside the moment. The footsteps, the breathing, the environment — all working together.
This is perfect for product demos, action sequences, or any scene where specific sounds matter.
Sound Type 3: Dialogue
Remember creating a birthday greeting in the previous lesson? It was actually done with the "Dialogue" technique.
But instead of loosely suggesting speech, you can control the exact words that will be said.
Use this format: [Subject] says, "[phrase]"
Keep it short. Remember that Omni generates a 10-second video at a time.
practice preview
Interactive practice
Fill in the blank
Complete this prompt to create a video with spoken dialogue.
Here, we did one more thing — combined the dialogue with ambient noise.
This approach is the most effective because videos often combine multiple audio elements. For example: ambient noise for atmosphere, SFX for specific actions, and dialogue when appropriate.
You can layer these in a single prompt, just like you layer visual elements.
practice preview
Interactive practice
Fill in the blank
Complete this prompt using ambient noise, SFX, and dialogue.
See? Each sound plays a role. The dialogue communicates welcome, the door creak adds realism, and the rain sets the atmosphere.
This is how you create a complete experience — by directing every layer of the video.
- Ambient noise sets the environment and atmosphere: Be specific.
- Sound effects (SFX) add realism to specific actions: Describe exactly what you want to hear.
- Dialogue brings characters to life: Use the format "[Subject] says, '[line]'" and keep it under five seconds.
- Layer audio elements for complete, immersive videos.
What's Next?
You now know how to control both the visual and sound. Next, you'll learn how to maintain character consistency across multiple videos.
See you there!
