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

# Happy Horse 1.0 - Create video from image

> Animate a single image into a high-quality AI video using Happy Horse 1.0, Alibaba's image-to-video model. The image is used as the first frame and an optional text prompt guides motion and style.

**Key features:**
- 720P and 1080P resolution support
- Duration: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 seconds
- Optional prompt up to 2500 characters




## OpenAPI

````yaml post /v1/ai/image-to-video/happy-horse-1
openapi: 3.0.0
info:
  description: >-
    The Magnific API is your gateway to a vast collection of high-quality
    digital resources for your applications and projects. As a leading platform,
    it offers a wide range of graphics, including vectors, photos,
    illustrations, icons, PSD templates, and more, all curated by talented
    designers from around the world.
  title: Magnific API
  version: 1.0.0
servers:
  - description: B2B API Production V1
    url: https://api.magnific.com
security:
  - magnificApiKey: []
paths:
  /v1/ai/image-to-video/happy-horse-1:
    post:
      tags:
        - image-to-video
      summary: Happy Horse 1.0 - Create video from image
      description: >
        Animate a single image into a high-quality AI video using Happy Horse
        1.0, Alibaba's image-to-video model. The image is used as the first
        frame and an optional text prompt guides motion and style.


        **Key features:**

        - 720P and 1080P resolution support

        - Duration: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 seconds

        - Optional prompt up to 2500 characters
      operationId: create_video_happy_horse_1_i2v
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/i2v-request_1'
        required: true
      responses:
        '200':
          content:
            application/json:
              examples:
                success - created task:
                  $ref: '#/components/examples/200-task-created'
                success - in progress task:
                  $ref: '#/components/examples/200-task-in-progress'
                success - completed task:
                  $ref: '#/components/examples/200-task-completed'
                success - failed task:
                  $ref: '#/components/examples/200-task-failed'
              schema:
                $ref: >-
                  #/components/schemas/_v1_ai_text_to_image_hyperflux_post_200_response
          description: OK - The task exists and the status is returned
        '400':
          content:
            application/json:
              examples:
                invalid_page:
                  summary: Parameter 'page' is not valid
                  value:
                    message: Parameter 'page' must be greater than 0
                invalid_query:
                  summary: Parameter 'query' is not valid
                  value:
                    message: Parameter 'query' must not be empty
                invalid_filter:
                  summary: Parameter 'filter' is not valid
                  value:
                    message: Parameter 'filter' is not valid
                generic_bad_request:
                  summary: Bad Request
                  value:
                    message: Parameter ':attribute' is not valid
              schema:
                $ref: '#/components/schemas/get_all_style_transfer_tasks_400_response'
            application/problem+json:
              examples:
                invalid_page:
                  summary: Parameter 'page' is not valid
                  value:
                    message: Validation error
                    invalid_params:
                      - field: page
                        reason: Parameter 'page' must be greater than 0
                      - field: per_page
                        reason: Parameter 'per_page' must be greater than 0
              schema:
                $ref: >-
                  #/components/schemas/get_all_style_transfer_tasks_400_response_1
          description: >-
            Bad Request - The server could not understand the request due to
            invalid syntax.
        '401':
          content:
            application/json:
              examples:
                invalid_api_key:
                  summary: API key is not valid
                  value:
                    message: Invalid API key
                missing_api_key:
                  summary: API key is not provided
                  value:
                    message: Missing API key
              schema:
                $ref: '#/components/schemas/get_all_style_transfer_tasks_400_response'
          description: >-
            Unauthorized - The client must authenticate itself to get the
            requested response.
        '500':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/get_all_style_transfer_tasks_500_response'
          description: >-
            Internal Server Error - The server has encountered a situation it
            doesn't know how to handle.
        '503':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/get_all_style_transfer_tasks_503_response'
          description: Service Unavailable
components:
  schemas:
    i2v-request_1:
      description: >-
        Animate a single image into video using Happy Horse 1.0. The image is
        used as the first frame; an optional text prompt guides motion and
        style.
      properties:
        webhook_url:
          description: >
            Optional callback URL that will receive asynchronous notifications
            whenever the task changes status. The payload sent to this URL is
            the same as the corresponding GET endpoint response, but without the
            data field.
          example: https://www.example.com/webhook
          format: uri
          type: string
        image_url:
          description: >
            URL of the image to use as the first frame for image-to-video
            generation.


            **Supported formats:** JPEG, JPG, PNG, BMP, WEBP

            **Pixel dimensions:** at least 300px (width and height)

            **Aspect ratio:** between 1:2.5 and 2.5:1

            **Maximum file size:** 10 MB
          example: https://example.com/start-frame.jpg
          format: uri
          type: string
        prompt:
          description: >-
            Text prompt to guide the animation. Optional but recommended for
            better control over the generated video content.
          example: >-
            The character walks forward slowly with wind blowing through their
            hair
          maxLength: 2500
          type: string
        resolution:
          $ref: '#/components/schemas/resolution'
        duration:
          $ref: '#/components/schemas/duration'
        seed:
          description: >-
            Random seed for reproducibility. Use the same seed with identical
            parameters to improve reproducibility (does not guarantee identical
            results). Leave unset for a random seed.
          example: 12345
          maximum: 2147483647
          minimum: 0
          type: integer
      required:
        - image_url
      title: Image to Video - Happy Horse 1.0
      type: object
    _v1_ai_text_to_image_hyperflux_post_200_response:
      example:
        data:
          generated:
            - https://openapi-generator.tech
            - https://openapi-generator.tech
          task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
          status: CREATED
      properties:
        data:
          $ref: '#/components/schemas/task-detail_1'
      required:
        - data
      type: object
    get_all_style_transfer_tasks_400_response:
      example:
        message: message
      properties:
        message:
          type: string
      type: object
    get_all_style_transfer_tasks_400_response_1:
      properties:
        problem:
          $ref: >-
            #/components/schemas/get_all_style_transfer_tasks_400_response_1_problem
      type: object
    get_all_style_transfer_tasks_500_response:
      example:
        message: Internal Server Error
      properties:
        message:
          example: Internal Server Error
          type: string
      type: object
    get_all_style_transfer_tasks_503_response:
      example:
        message: Service Unavailable. Please try again later.
      properties:
        message:
          example: Service Unavailable. Please try again later.
          type: string
      type: object
    resolution:
      default: 1080P
      description: |
        Output video resolution:
        - `720P`: 720p HD (1280x720)
        - `1080P`: 1080p Full HD (1920x1080)
      enum:
        - 720P
        - 1080P
      type: string
    duration:
      default: 5
      description: >-
        Duration of the generated video in seconds. One of: 3, 4, 5, 6, 7, 8, 9,
        10, 11, 12, 13, 14, 15.
      enum:
        - 3
        - 4
        - 5
        - 6
        - 7
        - 8
        - 9
        - 10
        - 11
        - 12
        - 13
        - 14
        - 15
      type: integer
    task-detail_1:
      allOf:
        - $ref: '#/components/schemas/task'
        - properties:
            generated:
              items:
                description: URL of the generated image
                format: uri
                type: string
              type: array
          required:
            - generated
          type: object
      example:
        generated:
          - https://openapi-generator.tech
          - https://openapi-generator.tech
        task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
        status: CREATED
    get_all_style_transfer_tasks_400_response_1_problem:
      properties:
        message:
          example: Validation error
          type: string
        invalid_params:
          items:
            $ref: >-
              #/components/schemas/get_all_style_transfer_tasks_400_response_1_problem_invalid_params_inner
          type: array
      required:
        - invalid_params
        - message
      type: object
    task:
      example:
        task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
        status: CREATED
      properties:
        task_id:
          description: Task identifier
          format: uuid
          type: string
        status:
          description: Task status
          enum:
            - CREATED
            - IN_PROGRESS
            - COMPLETED
            - FAILED
          type: string
      required:
        - status
        - task_id
      type: object
    get_all_style_transfer_tasks_400_response_1_problem_invalid_params_inner:
      properties:
        name:
          description: Name of the invalid parameter.
          example: page
          type: string
        field:
          description: Field of the invalid parameter. Mirrors `name`.
          example: page
          type: string
        reason:
          example: Parameter 'page' must be greater than 0
          type: string
      required:
        - field
        - name
        - reason
      type: object
  examples:
    200-task-created:
      summary: Success - Task created
      value:
        data:
          generated: []
          task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
          status: CREATED
    200-task-in-progress:
      summary: Success - Task in progress
      value:
        data:
          generated: []
          task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
          status: IN_PROGRESS
    200-task-completed:
      summary: Success - Task completed
      value:
        data:
          generated:
            - https://ai-statics.freepik.com/completed_task_image.jpg
          task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
          status: COMPLETED
    200-task-failed:
      summary: Success - Task failed
      value:
        data:
          generated: []
          task_id: 046b6c7f-0b8a-43b9-b35d-6489e6daee91
          status: FAILED
  securitySchemes:
    magnificApiKey:
      description: >
        Your Magnific API key. Required for authentication. [Learn how to obtain
        an API key](https://docs.magnific.com/quickstart)
      in: header
      name: x-magnific-api-key
      type: apiKey

````