Veo 3.1 API Tutorial — Generate AI Videos via NexaAPI (Python + JS Guide)

Google just dropped Veo 3.1 — the most advanced video generation model in the Gemini API. Here's how to access it in under 5 minutes, without Google Cloud setup, without complex billing, and at 5x cheaper than direct Vertex AI pricing.

What is Veo 3.1?

Veo 3.1 is Google DeepMind's latest video generation model, supporting:

• Text-to-video generation with cinematic quality
• Image-to-video animation
• Audio generation built-in
• Up to 30-second videos at 1080p
• Aspect ratio control (16:9, 9:16)

Why Use NexaAPI Instead of Raw Gemini API?

Feature	Direct Gemini API	NexaAPI
Setup	Google Cloud + billing	2-minute signup
Pricing	$0.40/request	$0.15/request
Models	Veo only	56+ models
Auth	Complex OAuth	Simple API key
Free tier	Limited	Yes

Installation

pip install nexaapi

npm install nexaapi

Python Tutorial: Text-to-Video with Veo 3.1

# pip install nexaapi
from nexaapi import NexaAPI

# Get your API key at https://nexa-api.com
client = NexaAPI(api_key='YOUR_API_KEY')

# Text-to-Video with Veo 3.1
response = client.video.generate(
    model='veo-3.1',
    prompt='A cinematic aerial shot of a futuristic city at sunset, 4K quality',
    aspect_ratio='16:9',
    resolution='1080p'
)

print(response.video_url)

# Save video locally
with open('output.mp4', 'wb') as f:
    f.write(response.content)
print('Video saved as output.mp4')

Python Tutorial: Image-to-Video with Veo 3.1

from nexaapi import NexaAPI

client = NexaAPI(api_key='YOUR_API_KEY')

# Image-to-Video with Veo 3.1
response = client.video.generate(
    model='veo-3.1',
    prompt='The scene comes to life with dramatic motion and cinematic lighting',
    image_url='https://example.com/your-image.jpg',
    aspect_ratio='16:9',
    resolution='1080p'
)

print(f'Image-to-Video URL: {response.video_url}')

JavaScript Tutorial: Veo 3.1 Video Generation

// npm install nexaapi
import NexaAPI from 'nexaapi';
import fs from 'fs';

// Get your API key at https://nexa-api.com
const client = new NexaAPI({ apiKey: 'YOUR_API_KEY' });

async function generateVideo() {
  // Text-to-Video with Veo 3.1
  const response = await client.video.generate({
    model: 'veo-3.1',
    prompt: 'A cinematic aerial shot of a futuristic city at sunset, 4K quality',
    aspectRatio: '16:9',
    resolution: '1080p'
  });

  console.log('Video URL:', response.videoUrl);
  fs.writeFileSync('output.mp4', response.content);
  console.log('Video saved as output.mp4');
}

generateVideo().catch(console.error);

JavaScript Tutorial: Image-to-Video

import NexaAPI from 'nexaapi';

const client = new NexaAPI({ apiKey: 'YOUR_API_KEY' });

async function imageToVideo() {
  const response = await client.video.generate({
    model: 'veo-3.1',
    prompt: 'The scene comes to life with dramatic motion',
    imageUrl: 'https://example.com/your-image.jpg',
    aspectRatio: '16:9'
  });

  console.log('Image-to-Video URL:', response.videoUrl);
}

imageToVideo().catch(console.error);

Advanced: Aspect Ratio & Resolution Control

from nexaapi import NexaAPI

client = NexaAPI(api_key='YOUR_API_KEY')

# Vertical video for TikTok/Reels (9:16)
vertical_video = client.video.generate(
    model='veo-3.1',
    prompt='A person dancing in a colorful studio',
    aspect_ratio='9:16',
    resolution='1080p'
)

# Standard widescreen (16:9)
widescreen_video = client.video.generate(
    model='veo-3.1',
    prompt='Epic mountain landscape timelapse',
    aspect_ratio='16:9',
    resolution='720p'  # Use 720p for faster generation
)

print(f'Vertical: {vertical_video.video_url}')
print(f'Widescreen: {widescreen_video.video_url}')

Pricing Comparison

Provider	Price per Request	Free Tier
Google Vertex AI (direct)	~$0.40	Limited
NexaAPI	$0.15	Yes
Other aggregators	$0.20-0.35	No

NexaAPI is 2.7x cheaper than direct Google Vertex AI pricing.

FAQ

Q: Do I need a Google Cloud account?
No! NexaAPI handles all the Google Cloud complexity. You just need a NexaAPI key.

Q: Is there a free tier?
Yes! Sign up at nexa-api.com for free credits.

Q: What's the maximum video length?
Veo 3.1 supports up to 30 seconds at 1080p.

Q: Can I generate videos with audio?
Yes, Veo 3.1 includes built-in audio generation.

Get Started

1. 🚀 Sign up free at nexa-api.com
2. 📦 Install: pip install nexaapi or npm install nexaapi
3. 🎬 Generate your first video!

Resources

• NexaAPI Website — Sign up for free
• RapidAPI Hub — Try the API
• Python SDK on PyPI — pip install nexaapi
• Node.js SDK on npm — npm install nexaapi
• Official Veo 3.1 Docs — Google reference

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Generate AI videos with Veo 3.1 today — no Google Cloud setup, no complex billing, just 5 lines of code.