Vidu Q3 API

Complete API reference for Vidu Q3 video generation models by Vidu.

Model Variants

This API supports seven model variants:

Quick Comparison

Vidu Q3 Text to Video (Turbo & Pro)

Endpoint

POST /api/v1/video/task

Request Parameters

Required

Optional

Example Request

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const response = await fetch('https://api.flaq.ai/api/v1/video/task', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model_name: 'viduq3-turbo-text-to-video',
    prompt: 'A cinematic drone shot over misty mountains at sunrise',
    aspect_ratio: '16:9',
    resolution: '720p',
    duration: 5,
    sound: true,
    bgm: false,
    style: 'general',
    seed: 42
  })
});

const { data } = await response.json();
const taskId = data.task_id;

Vidu Q3 Image to Video (Turbo & Pro)

Request Parameters

Required

Optional

Example Request

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{
  model_name: 'viduq3-pro-image-to-video',
  image_url: 'https://example.com/image.jpg',
  prompt: 'Smooth pan across the scene with natural motion',
  aspect_ratio: '16:9',
  resolution: '720p',
  duration: 5,
  sound: true,
  bgm: false,
  seed: 42
}

Vidu Q3 Start-End Frame (Turbo & Pro)

Generate a video that transitions between a start frame and an end frame.

Request Parameters

Required

Optional

Example Request

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{
  model_name: 'viduq3-pro-start-end-frame',
  image_url: 'https://example.com/start.jpg',
  image_end_url: 'https://example.com/end.jpg',
  prompt: 'Smooth transition from day to night with stars appearing',
  aspect_ratio: '16:9',
  resolution: '720p',
  duration: 5,
  sound: true,
  bgm: false,
  seed: 42
}

Vidu Q3 Reference to Video

Generate a video from one to four ordered reference images. Reference audio and reference video inputs are not supported.

Request Parameters

Required

@ (AT) Reference Placeholders

The @ (AT) reference feature links reference images to the prompt through numbered <<<image_N>>> placeholders. Numbering starts at 1 and follows the order of the images array.

Optional

Unsupported Parameters: This model does not support audios or videos.

Example Request

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{
  model_name: 'viduq3-reference-to-video',
  prompt: 'Keep the character from image one and the jacket details from image two while walking through a rainy city',
  images: [
    'https://example.com/character-reference.jpg',
    'https://example.com/outfit-reference.jpg'
  ],
  aspect_ratio: '9:16',
  resolution: '1080p',
  duration: 8,
  sound: true,
  seed: 42
}

@ (AT) Reference-to-Video Request Example

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{
  model_name: 'viduq3-reference-to-video',
  prompt: 'Keep the character from <<<image_1>>> wearing the coat from <<<image_2>>> while entering the rainy city shown in <<<image_3>>>, then return to a close-up of <<<image_1>>>',
  images: [
    'https://example.com/character-reference.jpg',
    'https://example.com/outfit-reference.jpg',
    'https://example.com/city-reference.jpg'
  ],
  aspect_ratio: '9:16',
  resolution: '1080p',
  duration: 8,
  sound: true,
  seed: 42
}

Response Format

Initial Response

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{
  "code": 0,
  "message": "success",
  "data": {
    "task_id": "{task_id}",
    "response_url": "https://api.flaq.ai/api/v1/video/{task_id}",
    "task_status": "submitted"
  }
}

Polling Response

Poll GET /api/v1/video/{taskId} to check status:

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{
  "code": 0,
  "message": "success",
  "data": {
    "task_id": "{task_id}",
    "response_url": "https://api.flaq.ai/api/v1/video/{task_id}",
    "task_status": "succeed",
    "task_status_msg": null,
    "task_result": {
      "videos": [
        {
          "url": "https://example.com/generated-video.mp4"
        }
      ]
    }
  }
}

Status Values

• submitted: Task accepted and waiting to be processed
• processing: Video generation in progress
• succeed: Video generation completed
• failed: Video generation failed

Processing Time

• Turbo: 1-3 minutes
• Pro: 3-6 minutes

Best Practices

1. Tier Selection: Use Turbo for rapid iteration, Pro for final output
2. Prompt Writing: Describe both subject motion and camera movement for clearer results
3. Image Inputs: Use clear, high-resolution source frames for image-to-video and start-end workflows
4. Resolution Planning: Choose 540p, 720p, or 1080p based on speed, quality, and credit budget
5. Reference Images: For reference-to-video, submit 1-4 images in intentional order and refer to them consistently in the prompt
6. Unsupported Media: Do not send audios or videos to the reference-to-video model