> ## 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. # Kling 4K I2V - Generate video from image > Generate AI video in 4K resolution from an image using Kling 4K Image-to-Video. **Features:** - **Image-to-video**: Use a reference image to guide 4K video generation - **End frame control**: Optionally specify an end frame image - **Motion brush**: Use static and dynamic masks for precise motion control **Duration:** 3-15 seconds **Resolution:** 4K output quality. ## OpenAPI ````yaml post /v1/ai/video/kling-4k-i2v 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/video/kling-4k-i2v: post: tags: - video - kling-4k-i2v - background_tasks summary: Kling 4K I2V - Generate video from image description: > Generate AI video in 4K resolution from an image using Kling 4K Image-to-Video. **Features:** - **Image-to-video**: Use a reference image to guide 4K video generation - **End frame control**: Optionally specify an end frame image - **Motion brush**: Use static and dynamic masks for precise motion control **Duration:** 3-15 seconds **Resolution:** 4K output quality. operationId: postAiVideoKling4kI2v requestBody: content: application/json: schema: $ref: '#/components/schemas/kling-4k-i2v-request' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/task-detail-200-default-response' description: OK - Task created successfully '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: kling-4k-i2v-request: properties: webhook_url: description: > Optional callback URL that receives asynchronous notifications when the task changes status. The payload includes the task status and result URL when completed. format: uri type: string image: description: > Reference image for video generation. Supports Base64 encoding or URL (ensure accessibility). For URL, must be publicly accessible. **Image requirements:** - Minimum: 300x300 pixels - Maximum: 10MB file size - Aspect ratio: 1:2.5 to 2.5:1 - Formats: JPG, JPEG, PNG type: string image_tail: description: > Optional end frame control image. Supports Base64 encoding or URL. For URL, must be publicly accessible. Must follow the same format requirements as the `image` field. **Image requirements:** - Same as `image` field type: string prompt: description: > Text prompt describing the desired video content. Maximum 2500 characters. **Tips for better results:** - Be specific about motion, camera angles, and actions - Describe the scene, characters, and atmosphere maxLength: 2500 type: string negative_prompt: default: blur, distort, and low quality description: >- Undesired elements to avoid in the generated video. Maximum 2500 characters. maxLength: 2500 type: string cfg_scale: default: 0.5 description: > Guidance scale controlling prompt adherence versus creative freedom. Range: 0 to 1. - **0**: Maximum creative freedom, loosest interpretation of the prompt - **0.5** (default): Balanced between prompt adherence and creativity - **1**: Strongest adherence to the prompt, least creative variation format: float maximum: 1 minimum: 0 type: number duration: default: 5 description: | Duration of the generated video in seconds. **Range:** 3-15 seconds enum: - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 type: integer static_mask: description: >- Static mask image for defining motion brush application areas. ● Supports both Base64 encoding and image URLs (ensure URLs are publicly accessible and follow the same format requirements as the `image` field). ● Supported image formats include .jpg / .jpeg / .png. ● The aspect ratio of the mask image MUST match the input image (`image` field); otherwise, the task will fail. ● The resolutions of the `static_mask` image and the `dynamic_masks.mask` images must be identical; otherwise, the task will fail. ● The static brush feature allows you to define areas where motion will be applied in the generated video. type: string dynamic_masks: items: $ref: '#/components/schemas/itvkp_request_content_dynamic_masks_inner' type: array required: - image type: object task-detail-200-default-response: description: OK - The task exists and the status is returned 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 itvkp_request_content_dynamic_masks_inner: properties: mask: description: >- Dynamic mask image for defining motion brush application areas with trajectories. ● Support inputting image Base64 encoding or image URL (ensure the URL is accessible and follows the same format requirements as the image field). ● Supported image formats include .jpg / .jpeg / .png ● The aspect ratio of the mask image must match the input image (image field); otherwise, the task will fail (failed). ● The resolutions of the static_mask image and the dynamic_masks.mask image must be identical; otherwise, the task will fail (failed). type: string trajectories: description: Motion Trajectory Coordinate Sequence items: $ref: >- #/components/schemas/itvkp_request_content_dynamic_masks_inner_trajectories_inner type: array required: - mask - trajectories type: object 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 itvkp_request_content_dynamic_masks_inner_trajectories_inner: properties: x: description: Horizontal coordinate (X-coordinate) in 2D pixel system. type: integer 'y': description: Vertical coordinate (Y-coordinate) in 2D pixel system. type: integer required: - x - 'y' 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 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 ````