Kling 2.1 Pro is an advanced endpoint for the Kling 2.1 model, offering professional-grade videos with enhanced visual fidelity, precise camera movements, and dynamic motion control, perfect for cinematic storytelling.

fal-ai/kling-video/v2.1/pro/image-to-video

Inference

Commercial use

Partner

This endpoint is deprecated

This model is no longer supported.

Schema

LLMs

Playground API Examples

SandboxOpen in Sandbox

Input

Prompt*

Additional Settings

Customize your input with more control.

Result

Idle

What would you like to do next?

fal-ai/kling-video/v2.1/pro/image-to-video

Schema

LLMs

Input

Prompt*

Additional Settings

Customize your input with more control.

Result

Idle

What would you like to do next?

Input

Prompt*

Warm, incandescent streetlights paint the rain-slicked cobblestones in pools of amber light as a couple walks hand-in-hand, their silhouettes stark against the blurry backdrop of a city shrouded in a gentle downpour; the camera lingers on the subtle textures of their rain-soaked coats and the glistening reflections dancing on the wet pavement, creating a sense of intimate vulnerability and shared quietude.

Type # to reference inputs.

Image Url*

Hint: Drag and drop image files from your computer, images from web pages, paste from clipboard (Ctrl/Cmd+V), or provide a URL. Accepted file types: jpg, jpeg, png, webp, gif, avif, heic, heif

Tail Image Url

Hint: Drag and drop image files from your computer, images from web pages, paste from clipboard (Ctrl/Cmd+V), or provide a URL. Accepted file types: jpg, jpeg, png, webp, gif, avif, heic, heif

Additional Settings

Customize your input with more control.

For 5s video your request will cost $0.49. For every additional second you will be charged $0.098.

Result

Idle

This generation takes approximately 5m.

What would you like to do next?

For 5s video your request will cost $0.49. For every additional second you will be charged $0.098.

Readme

Kling AI v2.1 Pro - Professional Image-to-Video Generation

Transform static images into dynamic, fluid video content with Kling AI v2.1 Pro, the advanced image-to-video generation model from Kuaishou. Perfect for content creators, marketers, and developers who need high-quality video content at scale.

Overview

Kling AI v2.1 Pro brings professional-grade video generation capabilities to your applications. Built on advanced machine learning architecture, it excels at creating natural motion patterns and seamless transitions from single images with enhanced visual fidelity, precise camera movements, and dynamic motion control.

Key Capabilities:

Generate 5 or 10-second videos from any input image
Advanced motion interpolation for smooth transitions
Preserve fine details and textures throughout animation
Support for diverse image types and subjects
Professional-grade visual quality perfect for cinematic storytelling

Getting Started

Getting up and running with Kling AI is straightforward. First, set up your development environment:

Using npm:

bash
npm install --save @fal-ai/client

Using pip:

python
pip install fal-client

Configure your authentication:

typescript
import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY_HERE"
});

Making Your First API Call

Here's a simple example of generating a video from an image:

typescript
import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Sunlight dapples through budding branches, illuminating a vibrant tapestry of greens",
    image_url: "https://example.com/your-image.jpg",
    duration: "5",
    aspect_ratio: "16:9",
    negative_prompt: "blur, distort, and low quality",
    cfg_scale: 0.5
  }
});

console.log(result.video.url);

API Parameters

prompt (required): Text description of the desired motion and scene
image_url (required): URL of the input image
duration: Video duration - "5" or "10" seconds
aspect_ratio: Output aspect ratio (e.g., "16:9", "9:16", "1:1")
negative_prompt: Elements to avoid in the generation
cfg_scale: Classifier Free Guidance scale (default: 0.5)
static_mask_url: URL for static motion brush mask
dynamic_mask_url: URL for dynamic motion brush mask
special_fx: Special effects like "hug", "kiss", "heart_gesture", "squish", "expansion"
input_image_urls: Array of up to 4 images for multi-image generation

Advanced Features

The Pro version includes several advanced capabilities that set it apart:

Motion Control

Fine-tune the intensity and direction of motion with precise controls using motion brush masks and cfg_scale parameters.

Quality Preservation

Advanced interpolation algorithms maintain image quality throughout the video sequence, ensuring crisp details and accurate color reproduction.

Special Effects

typescript
const result = await fal.subscribe("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Romantic scene with special effects",
    image_url: "your-image-url",
    special_fx: "heart_gesture"
  }
});

Model Variants

Kling 2.1 offers multiple quality tiers:

Pro: Professional-grade quality (this model)
Standard: fal-ai/kling-video/v2.1/standard/image-to-video - Cost-efficient option
Master: fal-ai/kling-video/v2.1/master/image-to-video - Premium tier with unparalleled quality

Best Practices

To achieve optimal results:

Provide high-quality input images (recommended: 1080p or higher)
Write detailed prompts describing motion, camera movement, and scene dynamics
Use negative prompts to avoid unwanted elements
Test different cfg_scale values (0.3-0.7) for motion control
Consider aspect ratio based on your target platform

Technical Specifications

Processing Capabilities:

Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF
Output format: MP4
Resolution: Up to 1080p
Frame rate: Standard video frame rates
Processing time: Approximately 5 minutes

Queue Management

For asynchronous processing:

typescript
// Submit request
const { request_id } = await fal.queue.submit("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Your detailed video description",
    image_url: "your-image-url",
    duration: "10"
  }
});

// Check status
const status = await fal.queue.status("fal-ai/kling-video/v2.1/pro/image-to-video", {
  requestId: request_id,
  logs: true
});

// Get result
const result = await fal.queue.result("fal-ai/kling-video/v2.1/pro/image-to-video", {
  requestId: request_id
});

Pricing and Usage

5-second video: $0.45
Additional seconds: $0.09 per second
10-second video: $0.90
Processing time: Approximately 5 minutes

View detailed pricing or contact sales for enterprise solutions.

Support and Resources

Need help? Access comprehensive support through:

Technical documentation at docs.fal.ai
API Reference: fal.ai/models/fal-ai/kling-video/v2.1/pro/image-to-video/api
Community forums for peer support
Direct support channels for Pro users

Ready to Create Professional Videos?

Get started with Kling AI v2.1 Pro today by signing up at fal.ai and generating your API key. Transform your static images into engaging, cinematic videos with professional-grade quality.

Readme

Kling AI v2.1 Pro - Professional Image-to-Video Generation

Overview

Key Capabilities:

Generate 5 or 10-second videos from any input image
Advanced motion interpolation for smooth transitions
Preserve fine details and textures throughout animation
Support for diverse image types and subjects
Professional-grade visual quality perfect for cinematic storytelling

Getting Started

Getting up and running with Kling AI is straightforward. First, set up your development environment:

Using npm:

bash
npm install --save @fal-ai/client

Using pip:

python
pip install fal-client

Configure your authentication:

typescript
import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY_HERE"
});

Making Your First API Call

Here's a simple example of generating a video from an image:

typescript
import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Sunlight dapples through budding branches, illuminating a vibrant tapestry of greens",
    image_url: "https://example.com/your-image.jpg",
    duration: "5",
    aspect_ratio: "16:9",
    negative_prompt: "blur, distort, and low quality",
    cfg_scale: 0.5
  }
});

console.log(result.video.url);

API Parameters

prompt (required): Text description of the desired motion and scene
image_url (required): URL of the input image
duration: Video duration - "5" or "10" seconds
aspect_ratio: Output aspect ratio (e.g., "16:9", "9:16", "1:1")
negative_prompt: Elements to avoid in the generation
cfg_scale: Classifier Free Guidance scale (default: 0.5)
static_mask_url: URL for static motion brush mask
dynamic_mask_url: URL for dynamic motion brush mask
special_fx: Special effects like "hug", "kiss", "heart_gesture", "squish", "expansion"
input_image_urls: Array of up to 4 images for multi-image generation

Advanced Features

The Pro version includes several advanced capabilities that set it apart:

Motion Control

Fine-tune the intensity and direction of motion with precise controls using motion brush masks and cfg_scale parameters.

Quality Preservation

Advanced interpolation algorithms maintain image quality throughout the video sequence, ensuring crisp details and accurate color reproduction.

Special Effects

typescript
const result = await fal.subscribe("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Romantic scene with special effects",
    image_url: "your-image-url",
    special_fx: "heart_gesture"
  }
});

Model Variants

Kling 2.1 offers multiple quality tiers:

Pro: Professional-grade quality (this model)
Standard: fal-ai/kling-video/v2.1/standard/image-to-video - Cost-efficient option
Master: fal-ai/kling-video/v2.1/master/image-to-video - Premium tier with unparalleled quality

Best Practices

To achieve optimal results:

Provide high-quality input images (recommended: 1080p or higher)
Write detailed prompts describing motion, camera movement, and scene dynamics
Use negative prompts to avoid unwanted elements
Test different cfg_scale values (0.3-0.7) for motion control
Consider aspect ratio based on your target platform

Technical Specifications

Processing Capabilities:

Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF
Output format: MP4
Resolution: Up to 1080p
Frame rate: Standard video frame rates
Processing time: Approximately 5 minutes

Queue Management

For asynchronous processing:

typescript
// Submit request
const { request_id } = await fal.queue.submit("fal-ai/kling-video/v2.1/pro/image-to-video", {
  input: {
    prompt: "Your detailed video description",
    image_url: "your-image-url",
    duration: "10"
  }
});

// Check status
const status = await fal.queue.status("fal-ai/kling-video/v2.1/pro/image-to-video", {
  requestId: request_id,
  logs: true
});

// Get result
const result = await fal.queue.result("fal-ai/kling-video/v2.1/pro/image-to-video", {
  requestId: request_id
});

Pricing and Usage

5-second video: $0.45
Additional seconds: $0.09 per second
10-second video: $0.90
Processing time: Approximately 5 minutes

View detailed pricing or contact sales for enterprise solutions.

Support and Resources

Need help? Access comprehensive support through:

Technical documentation at docs.fal.ai
API Reference: fal.ai/models/fal-ai/kling-video/v2.1/pro/image-to-video/api
Community forums for peer support
Direct support channels for Pro users

Ready to Create Professional Videos?

Get started with Kling AI v2.1 Pro today by signing up at fal.ai and generating your API key. Transform your static images into engaging, cinematic videos with professional-grade quality.