Veo 3 API SDK for RunAPI

Veo 3 API SDKs for JavaScript, Ruby, and Go on RunAPI.

The veo api SDK packages JavaScript, Ruby, and Go clients for Veo 3 video generation on RunAPI. Use this veo api SDK for text-to-video, image-to-video, video extension, and 1080p upgrade workflows.

Installation

npm install @runapi.ai/veo-3-1
# or
pnpm add @runapi.ai/veo-3-1
# or
yarn add @runapi.ai/veo-3-1

Quick Start

import { Veo31Client } from '@runapi.ai/veo-3-1';

const client = new Veo31Client({
  apiKey: 'your-api-key',
  baseUrl: 'https://runapi.ai', // optional
});

const result = await client.textToVideo.run({
  prompt: 'A dog playing in a park on a sunny day',
  model: 'veo-3.1-fast',
  aspect_ratio: '16:9',
  duration_seconds: 8,
});

console.log('Video URL:', result.videos?.[0].url);

Features

• Text-to-Video: Generate videos from text prompts
• Image-to-Video: Animate static images or create transitions between two images
• Video Extension: Extend existing videos with additional content
• 1080P Upgrade: Request high-definition versions of generated videos
• Full TypeScript Support: Complete type definitions for all API endpoints
• Automatic Polling: Built-in polling for async video generation
• Error Handling: Comprehensive error types from @runapi.ai/core

API Reference

Client Initialization

const client = new Veo31Client({
  apiKey: string;      // Required: Your RunAPI.ai API key
  baseUrl?: string;    // Optional: API base URL (defaults to production)
});

Video Generation

Text-to-Video

const result = await client.textToVideo.run({
  prompt: 'A beautiful sunset over mountains',
  model: 'veo-3.1-fast', // or 'veo-3.1' for higher quality
  aspect_ratio: '16:9', // or '9:16', 'auto'
  duration_seconds: 8, // optional: 4, 6, or 8 seconds
  seeds: 12345, // optional: for reproducibility
  enable_translation: true, // optional: auto-translate to English
  watermark: 'MyBrand', // optional
  callback_url: 'https://your-domain.com/webhook', // optional
});

Image-to-Video

const result = await client.textToVideo.run({
  prompt: 'The dog starts running energetically',
  model: 'veo-3.1-fast',
  input_mode: 'first_and_last_frames',
  first_frame_image_url: 'https://cdn.runapi.ai/public/samples/image-to-video.jpg',
  aspect_ratio: '16:9',
  duration_seconds: 8,
});

Manual Control (Create + Poll)

const task = await client.textToVideo.create({
  prompt: 'A serene lake',
  model: 'veo-3.1-fast',
});

const status = await client.textToVideo.get(task.id);
console.log('Status:', status.status);

Video Extension

const original = await client.textToVideo.run({
  prompt: 'A dog playing with a ball',
  model: 'veo-3.1-fast',
});

const extended = await client.extendVideo.run({
  source_task_id: original.id,
  prompt: 'The dog catches the ball and runs back',
});

1080P Upgrade

const original = await client.textToVideo.run({
  prompt: 'A cinematic landscape',
  model: 'veo-3.1',
  aspect_ratio: '16:9',
});

const hd = await client.upscaleVideo.run({
  source_task_id: original.id,
  output_resolution: '1080p',
  index: 0,
});

console.log('1080P video:', hd.videos?.[0]?.url);

Models

Model	Description	Pricing	Use Case
veo-3.1	Quality model	Pricing	High fidelity, production use
veo-3.1-fast	Fast model	Pricing	Rapid iteration and drafts

Input Modes

Type	Description	Requirements
text	Pure text-to-video	Prompt only
first_and_last_frames	Image-to-video	first_frame_image_url, optional last_frame_image_url
reference	Reference-based	reference_image_urls with 1-3 images, veo-3.1-fast only, 16:9 only

Aspect Ratios

• 16:9: Landscape (default, supports 1080P upgrade)
• 9:16: Portrait (mobile-friendly)
• auto: Automatic cropping based on input

Duration

Text, image, and reference-image requests can set duration_seconds to 4, 6, or 8 seconds. When omitted, the service uses the default duration.

Error Handling

import {
  Veo31Client,
  AuthenticationError,
  InsufficientCreditsError,
  ValidationError,
  TaskFailedError,
} from '@runapi.ai/veo-3-1';

try {
  const result = await client.textToVideo.run({
    prompt: 'A beautiful scene',
    model: 'veo-3.1-fast',
  });
} catch (error) {
  if (error instanceof AuthenticationError) {
    console.error('Invalid API key');
  } else if (error instanceof InsufficientCreditsError) {
    console.error('Not enough credits');
  } else if (error instanceof ValidationError) {
    console.error('Invalid parameters');
  } else if (error instanceof TaskFailedError) {
    console.error('Video generation failed');
  }
}

Advanced Usage

Callbacks

const result = await client.textToVideo.create({
  prompt: 'A video',
  model: 'veo-3.1-fast',
  callback_url: 'https://your-domain.com/webhook',
});

Webhook payload on completion:

{
  id: string;
  status: 'completed' | 'failed';
  videos?: VideoMetadata[];
  error?: string;
}

Reproducible Generation

const result1 = await client.textToVideo.run({
  prompt: 'A scene',
  model: 'veo-3.1-fast',
  seeds: 42857,
});

const result2 = await client.textToVideo.run({
  prompt: 'A scene',
  model: 'veo-3.1-fast',
  seeds: 42857,
});

For full veo api documentation including all parameters and response formats, visit https://runapi.ai/docs#veo-3.1.

License

MIT

Support

For issues and questions, please visit https://github.com/runapi-ai/runapi.ai