> ## 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 T2V - Generate video from text > Generate AI video in 4K resolution from a text prompt using Kling 4K Text-to-Video. **Features:** - **Text-to-video**: Generate 4K videos from text prompts - **Camera control**: Optionally specify camera movement type and configuration **Duration:** 3-15 seconds **Resolution:** 4K output quality. ## OpenAPI ````yaml post /v1/ai/video/kling-4k-t2v 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-t2v: post: tags: - video - kling-4k-t2v - background_tasks summary: Kling 4K T2V - Generate video from text description: > Generate AI video in 4K resolution from a text prompt using Kling 4K Text-to-Video. **Features:** - **Text-to-video**: Generate 4K videos from text prompts - **Camera control**: Optionally specify camera movement type and configuration **Duration:** 3-15 seconds **Resolution:** 4K output quality. operationId: postAiVideoKling4kT2v requestBody: content: application/json: schema: $ref: '#/components/schemas/kling-4k-t2v-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-t2v-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 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 aspect_ratio: default: '16:9' description: > Aspect ratio for the generated video: - `16:9`: Landscape (widescreen) - ideal for YouTube, presentations - `9:16`: Portrait (vertical) - ideal for TikTok, Instagram Stories, Reels - `1:1`: Square - ideal for Instagram posts, social media enum: - '16:9' - '9:16' - '1:1' type: string 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 required: - prompt 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 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 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 ````