Lightricks

Access Lightricks' LTX-2 AI models for cinematic video generation through Runware's unified API. Professional-grade motion control, HDR pipelines, and real-time rendering capabilities.

Introduction

Lightricks' AI models are integrated into the Runware platform through our unified API, providing access to advanced cinematic video generation technology built for creators, brands, and studios. The LTX-2 model family delivers fast, efficient video generation with professional-grade motion control and lighting precision.

Through the providerSettings.lightricks object, you can access Lightricks' unique features such as audio generation, while maintaining the consistency of Runware's standard API structure. This page documents the technical specifications, parameter requirements, and provider-specific settings for all Lightricks models available through our platform.

providerSettings » lightricks lightricks object

Configuration object for Lightricks-specific video generation settings. These parameters provide access to specialized features and controls available across Lightricks' video generation models.

View example

"providerSettings": {
  "lightricks": { 
    "generateAudio": true
  } 
}

Properties ⁨1⁩ property

providerSettings » lightricks » generateAudio generateAudio boolean Default: false: Controls whether to generate synchronized audio for the video output. When enabled, the model creates audio that matches the visual content and motion in the generated video.

Video models

LTX-2 Pro

Professional edition of LTX-2 built for cinematic video creation. It focuses on realistic motion and precise lighting control, giving creators full command over pacing and atmosphere.

Model AIR ID: lightricks:2@0.

Supported workflows: Text-to-video, image-to-video.

Technical specifications:

Positive prompt: 2-10000 characters.
No seed support.
Supported dimensions:
- 1080p: 1920×1080 (16:9).
- 1440p: 2560×1440 (16:9).
- 2160p (4K): 3840×2160 (16:9).
Frame rate: 25 or 50 FPS (Default: 25).
Duration: 6, 8 or 10 seconds (default: 6).
Frame images: Supports first frame for frameImages.
Input image requirements: Maximum 7MB file size.

Provider-specific settings:

Parameters supported: generateAudio.

Text-to-video 1080p w/sound

{
  "taskType": "videoInference",
  "taskUUID": "f47ac10b-58cc-4372-a567-0e02b2c3d492",
  "model": "lightricks:2@0",
  "positivePrompt": "A cinematic tracking shot of a character walking through a rain-soaked city street at night, neon lights reflecting in puddles",
  "duration": 8,
  "width": 1920,
  "height": 1080,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  }
}

Image-to-video 4K

{
  "taskType": "videoInference",
  "taskUUID": "6ba7b831-9dad-11d1-80b4-00c04fd430c8",
  "model": "lightricks:2@0",
  "frameImages": [
    {
      "inputImage": "c64351d5-4c59-42f7-95e1-eace013eddab",
      "frame": "first"
    }
  ],
  "positivePrompt": "Camera slowly pushes in as dramatic lighting illuminates the scene",
  "duration": 6,
  "width": 3840,
  "height": 1440
}

LTX-2 Fast

High-speed edition of LTX-2 designed for quick cinematic generation. It renders complex motion efficiently while preserving strong visual consistency.

Model AIR ID: lightricks:2@1.

Supported workflows: Text-to-video, image-to-video.

Technical specifications:

Positive prompt: 2-10000 characters.
No seed support.
Supported dimensions:
- 1080p: 1920×1080 (16:9).
- 1440p: 2560×1440 (16:9).
- 2160p (4K): 3840×2160 (16:9).
Frame rate: 25 or 50 FPS (Default: 25).
Duration: 6, 8 or 10 seconds (default: 6).
Frame images: Supports first frame for frameImages.
Input image requirements: Maximum 7MB file size.

Provider-specific settings:

Parameters supported: generateAudio.

Text-to-video 1080p w/sound

{
  "taskType": "videoInference",
  "taskUUID": "f47ac10b-58cc-4372-a567-0e02b2c3d493",
  "model": "lightricks:2@1",
  "positivePrompt": "Fast-paced action sequence with dynamic camera movements following a chase through urban environment",
  "duration": 6,
  "width": 1920,
  "height": 1080,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  }
}

Image-to-video 4K

{
  "taskType": "videoInference",
  "taskUUID": "6ba7b832-9dad-11d1-80b4-00c04fd430c8",
  "model": "lightricks:2@1",
  "frameImages": [
    {
      "inputImage": "c64351d5-4c59-42f7-95e1-eace013eddab",
      "frame": "first"
    }
  ],
  "positivePrompt": "Quick zoom out revealing the full scene with smooth motion",
  "duration": 8,
  "width": 3840,
  "height": 1440
}

LTX-2 Retake

Specialized model from the LTX-2 family designed for segment-based video regeneration. Allows retaking a portion of an input video using prompts, with controlled start time, duration, and selective audio or video replacement. Ideal for refining specific segments without regenerating entire videos.

Model AIR ID: lightricks:3@1.

Supported workflows: Video-to-video.

Technical specifications:

Positive prompt: 1-5000 characters (optional).
Segment editing: Define startTime and duration for the section to regenerate.
Dimensions: Automatically matches input video resolution.
Input video requirements: Maximum 20 seconds duration, maximum 505 frames, maximum resolution 3840×2160 (4K), 32MB file size limit.

Provider-specific settings:

Parameters supported: startTime, duration, mode.

Replace video segment

{
  "taskType": "videoInference",
  "taskUUID": "f47ac10b-58cc-4372-a567-0e02b2c3d495",
  "model": "lightricks:3@1",
  "inputs": {
    "video": "c64351d5-4c59-42f7-95e1-eace013eddab"
  },
  "positivePrompt": "Character turns toward camera with dramatic lighting change",
  "providerSettings": {
    "lightricks": {
      "startTime": 3,
      "duration": 4,
      "mode": "replace_video"
    }
  }
}

Replace audio and video

{
  "taskType": "videoInference",
  "taskUUID": "6ba7b834-9dad-11d1-80b4-00c04fd430c8",
  "model": "lightricks:3@1",
  "inputs": {
    "video": "c64351d5-4c59-42f7-95e1-eace013eddab"
  },
  "positivePrompt": "Explosion with intense sound effects and visual impact",
  "providerSettings": {
    "lightricks": {
      "startTime": 5,
      "duration": 2,
      "mode": "replace_audio_and_video"
    }
  }
}

Replace audio only

{
  "taskType": "videoInference",
  "taskUUID": "550e8400-e29b-41d4-a716-446655440010",
  "model": "lightricks:3@1",
  "inputs": {
    "video": "c64351d5-4c59-42f7-95e1-eace013eddab"
  },
  "positivePrompt": "Ambient forest sounds with birds chirping",
  "providerSettings": {
    "lightricks": {
      "startTime": 0,
      "duration": 10,
      "mode": "replace_audio"
    }
  }
}