[2025 Guide] How to Prompt for Speaking in Veo 3 with Tips and Examples

Think of it like directing an actor—telling them exactly how to say their lines with the right mood and pauses. That's what writing a prompt for speaking in Veo 3 is all about. You want your AI character to sound real, not robotic.

So how do you get there? In this guide, I'll show you how to write clear and easy Veo 3 prompts that make your videos feel alive. I'll also walk you through common issues like how to access the platform and fix audio glitches. And if you want a shortcut, there are AI tools that can help you tweak and improve your prompts in just one click—no coding or internet required. Let's break down!

A prompt is basically the instructions you give to your AI actor. Think of it like a director's script — you tell your character who they are, what they feel, and what to say. Writing good veo 3 prompts helps your videos sound and look much better.

To get started, you can follow a simple formula: Character + Emotion + Tone + Context.

• Character: Who is talking? Describe their age, style, or personality.
• Emotion: How do they feel? Happy, sad, excited, nervous?
• Tone: Is the voice serious, casual, funny, or formal?
• Context: Where are they? What’s happening around them?

Here's a basic example of a veo 3 prompt:

Pro Tips

Keep your dialogue short — about 8 seconds or less. Long sentences might make your character talk too fast or sound unnatural.

To make your Veo 3 prompts even better, you can use AI tools that help test different scripts and emotions. For example, Nut Studio offers a Prompt Optimization Expert Agent that lets you try out and improve your prompts offline with many AI voices and styles. This way, you can find the perfect prompt before generating your video, especially if you want to explore how an llm for writing or coding can boost your creative workflow.

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1 Describe What Happens — Paint the Scene

Start by describing who or what is in your scene and what they're doing. The more details you provide in your prompt, the better your video will turn out.

Include these key visual elements:

• Subject: Who's in the shot? A person, animal, or object?
• Context: Where are they? Indoors, city street, or forest?
• Action: What's happening? Walking, laughing, looking around?
• Style: Cinematic, animated, or other visual style?
• Camera Movement: Close-up, pan, selfie-style?
• Composition: Wide shot or close-up?
• Ambiance: Mood and lighting like "warm sunset" or "nighttime."

Here's a basic example of a veo 3 prompt:

2 Write Clear, Short Dialogue for Natural Speech

Your veo 3 prompt guide should also cover audio — what your character says and how. There are two ways:

• Explicit dialogue: Use a colon to specify exact words, e.g., "A woman says: 'Hello, welcome to the park.'"
• Implicit dialogue: Let Veo 3 create the words, e.g., "A woman tells us her life story."

Tips:

• Keep dialogue short (around 8 seconds).
• Too much speech sounds rushed; too little causes silence or gibberish.
• Use implicit prompts if unsure, then save good outputs for later.

Example of bad vs good dialogue prompts:

3 Maintain Character Consistency Across Videos

If you want your character to look the same in different scenes or videos, keep their description exact and detailed every time you write a prompt.

Example:

"John, a man in his 40s with short brown hair, wearing a blue jacket and glasses, looking thoughtful..."

Copy this whole description verbatim for all prompts involving John. This helps Veo 3 generate consistent visuals and audio, making your story feel seamless.

4 Chain Actions and Emotions to Create Realistic Scenes

Veo 3 can handle complex sequences in one prompt. Tell it what your character does first, then next — including emotional changes or gestures. This helps your AI character feel more lifelike.

Example:

"He bursts into wild laughter, head thrown back, body rocking. Mid-laugh, he stops suddenly, eyes wide with terror, face frozen."

This creates dynamic and believable AI performances — like directing an actor.

5 Control Background Sounds and Avoid Unwanted Subtitles

Audio matters as much as visuals in Veo 3 videos. Tell Veo 3 what sounds to include:

• Ambient noises: busy street, café chatter, festival crowd
• Sound effects: phone ringing, footsteps
• Music: tense score, cheerful pop song

To avoid distracting or incorrect subtitles:

• Use colons for dialogue, not quotation marks
• Add "(no subtitles)" in your prompt
• Repeat "No subtitles!" if needed

For background audio, specify it clearly:

"A standup comic tells a joke at a music festival: sounds of distant bands, noisy crowd, ambient background of a busy festival field (no studio audience)."

6 Experiment and Refine Your Prompts

Veo 3 tends to generate very similar results when you run the same prompt multiple times. That's great for consistency — but not so great if you're exploring new ideas.

To get more variety, change key parts of your prompt, like the character's appearance, setting, actions, and emotions.

Here are some sample tweaks you can try:

Change how your character looks. Instead of:
“A woman laughs quietly in her living room.”

Try:

Pro Tips

Write like you're describing a movie scene to a friend — the more emotion and imagery, the better the output.

7 The Best Shortcut: Use Nut Studio's Prompt Optimization Expert

When I first started writing Veo 3 prompts, I kept getting stuck. Some characters sounded robotic, others spoke too quickly, or the tone felt totally off. I realized it wasn't just about what the character said — it was how I framed the whole scene. That's where prompt structure became a game changer.

With tools like Nut Studio's Prompt Optimization Expert, you get more than just auto-suggestions. Instead, it gives you a complete prompt framework that you fill in yourself — kind of like building a scene with Lego blocks. This lets you stay creative while following the right format that Veo 3 understands best.

Nut Studio

• No cloud, no spying. Run AI offline on your PC anytime, anywhere, or boost it with online web search when you want.
• Use LLaMA, DeepSeek, Gemma, and 50+ powerful models in one app — no coding or setup.
• Upload your own docs — txt, pdf, ppt, and more — and build a smart personal knowledge base that answers your way.
• Unlock 180+ AI agents with real roles — from writing buddy to life coach — all work offline.

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Even better, Nut Studio lets you use different LLMs like Gemini, Claude, or DeepSeek inside the app to brainstorm or refine your descriptions. Each model has its strengths — some are better at emotion, others at structure. Learn which LLMs are best for writing prompts if you want to explore further.

How to Use Prompt Templates in Nut Studio

Step 1: Download and Open Nut Studio

Install Nut Studio on your PC. It's a lightweight local app that works fully offline.

Step 2: Launch the Prompt Optimization Expert

In the left sidebar, click "Prompt Agent", then go to the "Career" category.

Find "Prompt Optimization Expert" and hit "Chat" to start.

Step 3: Pick an LLM to Generate Your Prompt

You'll be asked to choose a large language model. You can try different options like DeepSeek or Gemini — each one has its own style when generating veo 3 prompts.

Step 4: Describe What You Want

Once the model loads, type a request like:
Help me write a vivid and natural prompt for a speaking character in Veo 3.
The agent will return a clean, structured prompt template — including fields like Role, Context, Emotion, and Constraints. You can fill in the details based on your video scene.

If you're wondering how to access Google Veo 3, here's the truth: it's not on a separate site like veo3.ai, and you won’t find it by just Googling "Veo Cam 3."

Instead, Veo 3 lives inside Google Gemini Advanced, which is only available through the AI Ultra Plan. You'll need a Google account and a paid subscription.

Once you subscribe, open gemini.google.com, and head to the chat window. You'll see a "Video" button next to the input box. Click that, and Veo 3's video generation tool will appear. From there, you can enter prompts like we discussed earlier to create rich, speaking videos with Veo 3.

Many users ask if they can access veo3.ai directly — the answer is no. The Gemini interface is the only way to use Veo 3 at the moment.

Question

Google Veo 3 is now available in 71 countries（source）, including Argentina, Australia, Brazil, Canada, Japan, Kenya, Malaysia, Nepal, New Zealand, Pakistan, Singapore, South Africa, South Korea, Sri Lanka, the US, and Zimbabwe.
You can access it through the Gemini app or the official website, but only if you're a paid subscriber.

If you've tried to generate audio in Flow/Veo 3 and got total silence, you're not alone. Many users on Reddit and Google support forums have hit the same wall — myself included. I lost credits testing audio generation because my videos played with no sound at all. Here's a step-by-step guide to help you fix this issue before wasting more time or tokens.

Step 1 Use the Right Mode and Settings

Audio only works in Text-to-Video mode. If you're using "Ingredients to Video" or "First Frame to Video", speech and dialogue will likely fail or switch to an older model (like Veo 2) with limited sound features.

To avoid the flow veo 3 no audio problem:

• Always use Text-to-Video when you need speech.
• Make sure you select "Highest Quality (Experimental Audio)". Yes, it's labeled "experimental" for a reason — it can still glitch, but this is your best bet for getting audio.
• Check if the volume icon inside the player is unmuted. It's often muted by default.
• Confirm that you're using the correct Google account with an active AI Ultra subscription, and your region supports Veo 3 audio.

Step 2 Preview the Audio Before You Download

Before downloading your Veo 3 video, always preview it inside the Flow interface. If there's sound in the preview but not after download, it's likely caused by:

• 1080p upscale bug: Many users lose audio when exporting at 1080p. Stick to 720p if audio matters.
• SceneBuilder glitch: Adding audio-enabled clips into SceneBuilder often strips the sound completely. If you need to stitch multiple clips, download each one separately at 720p and combine them using external tools like iMovie or DaVinci Resolve.

Step 3 Write Audio-Friendly Prompts

If you're still getting silent videos, tweak your prompt style:

• Use quotation marks for speech:
  "She smiles and says, 'Welcome to Veo 3.'"
• Add a line like: "Please generate this with clear speech."
• For ambient noise or effects, be specific:
  "Audio: festival crowd, upbeat music, clinking drinks."

Want to test different prompt styles fast?

Nut Studio helps you compare prompt outputs from multiple AI models like DeepSeek, Claude, and Gemini. This makes it easier to figure out what phrasing triggers speech in Veo 3 prompts and where things go wrong. Learn more in the Prompt Optimization Expert section above.

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Step 4 Still No Sound? Report It

If your video is still silent, report it to Google:

• Click "Send Feedback" in the Gemini or Flow app.
• Share the full prompt, date/time, selected mode, and video settings.
• If credits were used up, ask for a refund. Some users got theirs back, though results vary.

If there's an audio track but no sound, it may be a codec issue.

Veo 3's audio tools are powerful but still evolving. With the right approach, you can work around bugs and get your videos talking again.

Let's be real — when I first checked the Google Veo 3 price, I nearly closed the tab. The subscription cost for full access through the AI Ultra plan? A whopping $249.99/month. That's way too much if you're just testing or learning.

But here's the good news: you don't need to spend that much to try Veo 3. I've tested a few cheaper — even free — ways to access it. Let me walk you through them.

1 Use the Google AI Pro Free Trial (Yes, You Get 10 Free Uses)

If you're new, sign up for the Google AI Pro free trial. It gives you 1,000 AI credits, and each Veo 3 video costs 100 credits. That's 0 free videos1 — no payment needed.

Once the free credits are gone, you can upgrade to the Pro plan for $20/month, which renews 1,000 credits monthly. That works out to $2 per Veo 3 video, way cheaper than the Ultra plan.

Tips

This only works if you're okay with 10 videos per month. Need more? Keep reading.

2 Try "Veo 3 Fast" — A Cheaper Version

Google recently introduced Veo 3 Fast — it's 5x cheaper than the regular version. That means with your 1,000 free credits, you can generate up to 50 videos instead of just 10.

The quality is slightly lower, but for short-form content or drafts, it's totally worth it.

3 Join the Google Student Program

Are you a student? There's a special Google Veo 3 student access via the Google One AI Student Plan.

If you verify your student email (.edu or student ID), you can unlock Google AI Pro for free. That includes:

• Veo 3 video generation
• Access to Google Flow
• Gemini Advanced tools

Tips

Live outside the US? Try a VPN. Some regions don't show the student plan yet.

4

If you're a bit tech-savvy, Google Cloud gives $300 in credits for new users. You'll need to use the Vertex AI API and Veo model ID (veo-3.0-generate-preview). It takes a few setup steps, but you can create about 14 minutes of video this way.
Just be aware — Veo 3 is in private preview, so you might need to apply for access first.

Looking for even more budget-friendly tools to test AI video generation locally?

Nut Studio is a great option if you're exploring voice, script, and prompt generation across different LLMs like Claude, Gemini, and DeepSeek. It’s totally offline, totally private, and perfect for refining prompts before you spend credits on Veo 3.

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1 How do I write a Veo 3 prompt for a medical device?

Writing a Veo 3 prompt for a medical device is all about clarity. Start by naming the device (e.g., "a portable ECG monitor"), then describe how it works, who is using it, and in what setting. If you want dialogue, use short, realistic speech in quotation marks:
"This portable ECG sends results to your phone," the doctor explains.

Need help generating accurate medical dialogue or scenes? Try testing your prompts in Nut Studio first. You can run AI models like Claude or DeepSeek locally to refine your script before using Veo 3.

2 Where can I use Veo 3 for free?

You can use Veo 3 for free with Google's AI Protrial plan . It gives you 1,000 credits — enough for 10 regular Veo 3 videos or 50 videos with Veo 3 Fast.

Students can also access it through the Google One AI Student Plan. Just verify your .edu email and you're in. Don't forget: these free plans only work through the Gemini app or Flow interface.

3 Why is there no audio in Flow Veo 3 and how do I fix it?

This is a common problem. The "Flow Veo 3 no audio" issue usually happens if:

• You're not using "Text-to-Video" mode.
• "Highest Quality (Experimental Audio)"" isn't selected.
• Your video was added to Scenebuilder or upscaled to 1080p (which can break sound).

Before downloading, always check audio in the preview player. Still no sound? Rerun the prompt or try again in a private browser window.

You can also use Nut Studio to compare model outputs and refine your prompts for voice. It’s helpful when troubleshooting what's going wrong.

4 Is Veo 3 completely free to use?

No, Veo 3 is not fully free. The free trial gives you limited uses. After that, you’ll need to pay:

• $20/month for AI Pro (1000 credits)
• Or $250/month for full AI Ultra access

Students and developers can explore alternative access through trial credits or university programs. For creative testing, Nut Studio offers a free local tool to help you brainstorm and prep prompts before spending credits.

5 Is Veo 3 available in India

Yes! As of mid-2025, Veo 3 is available in India through the Gemini app for users with a Google AI Pro subscription. Just make sure you're signed in with a Google account and on a supported plan.

If you're still wondering how to prompt for speaking in Veo 3, the answer is simple: be clear, be direct, and always test your dialogue in "Text-to-Video" mode with audio enabled. From scene setting to character lines, small tweaks make a big difference.

Remember, Veo 3 is powerful — but it's not always predictable. That's why I always recommend trying out your ideas locally first with Nut Studio. It helps you refine prompts across multiple models before you burn credits in Flow.

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Article by

Aaron Smith

Aaron brings over a decade of experience in crafting SEO-optimized content for tech-focused audiences. At Nut Studio, he leads the blog’s content strategy and focuses on the evolving intersection of AI and content creation. His work dives deep into topics like large language models (LLMs) and AI deployment frameworks, turning complex innovations into clear, actionable guides that resonate with both beginners and experts.