> ## Documentation Index
> Fetch the complete documentation index at: https://docs.leapx-hub.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Image to Video - First/Last Frame Mode - Submit Task

## Introduction

Submit image-to-video task in first/last frame mode, used to generate video based on start and end images.

## Authentication

<ParamField header="Authorization" type="string" required>
  Bearer Token, e.g., `Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...`
  How to get: Obtain via the POST interface in the Authentication module at the top left, `https://docs.leapx-hub.com/en/leapx-lab-v4/endpoint/get-token`
</ParamField>

## Request Parameters

<ParamField body="image_urls" type="string[]" required>
  List of image URLs, including first and last images, must be 2 images
</ParamField>

<ParamField body="prompt" type="string" required>
  Text prompt
</ParamField>

<ParamField body="duration" type="long" required>
  Video duration (seconds)
</ParamField>

<ParamField body="req_key" type="string">
  Request key
</ParamField>

<ParamField body="resolution" type="string">
  Resolution
</ParamField>

<ParamField body="return_url" type="boolean">
  Whether to return video URL
</ParamField>

### Response Example

<ResponseExample>
  ```json theme={null}
  {
    "code": 200,
    "msg": "Operation successful",
    "data": {
      "id": "task-1234567890"
    }
  }
  ```
</ResponseExample>