> ## Documentation Index > Fetch the complete documentation index at: https://docs.powertokens.ai/llms.txt > Use this file to discover all available pages before exploring further. # HappyHorse 1.1 Text to Video > Submit an asynchronous Aliyun HappyHorse `happyhorse-1.1-t2v` text-to-video task. After submitting a task, query its status via `GET /ali/api/v1/tasks/{task_id}`. ## OpenAPI ````yaml api-reference/en/zmodelVideo/ali/happyhorse-1.1-t2v.json POST /ali/api/v1/services/aigc/video-generation/video-synthesis openapi: 3.0.1 info: title: HappyHorse 1.1 Text to Video version: 1.0.0 description: >- Aliyun HappyHorse `happyhorse-1.1-t2v` text-to-video capability documentation. The unified API endpoint is `/ali/api/v1/services/aigc/video-generation/video-synthesis`, used to create asynchronous video generation tasks. Generates physically realistic and smoothly moving video content from a text prompt. license: name: Project License url: https://github.com/QuantumNous/new-api/blob/main/LICENSE servers: - url: https://api.powertokens.ai description: Baze API server endpoint security: [] tags: - name: HappyHorse Video description: Aliyun HappyHorse video generation capability paths: /ali/api/v1/services/aigc/video-generation/video-synthesis: post: tags: - HappyHorse Video summary: Create happyhorse-1.1-t2v text-to-video task description: >- Submit an asynchronous Aliyun HappyHorse `happyhorse-1.1-t2v` text-to-video task. After submitting a task, query its status via `GET /ali/api/v1/tasks/{task_id}`. operationId: aliHappyHorse11T2VCreate parameters: - name: Content-Type in: header required: true schema: type: string description: >- Request content type. This parameter must be set to application/json. - name: X-DashScope-Async in: header required: true schema: type: string description: >- Asynchronous processing configuration parameter. HTTP requests only support async mode and must be set to enable. Missing this header will raise the error: "current user api does not support synchronous calls". requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/HappyHorse11T2VRequest' examples: text_to_video: summary: Text to video value: model: happyhorse-1.1-t2v input: prompt: 一座由硬纸板和瓶盖搭建的微型城市，在夜晚焕发出生机。一列硬纸板火车缓缓驶过，小灯点缀其间，照亮前路。 parameters: resolution: 720P ratio: '16:9' duration: 5 responses: '200': description: Submitted successfully. Returns a video task object. content: application/json: schema: $ref: '#/components/schemas/VideoTaskResponse' example: output: task_status: PENDING task_id: 0385dc79-5ff8-4d82-bcb6-xxxxxx request_id: 4909100c-7b5a-9f92-bfe5-xxxxxx '400': description: Invalid request parameters. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Authentication failed, e.g. missing or invalid token. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '429': description: Rate limit triggered or insufficient account quota. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: An internal error occurred while processing the request. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - BearerAuth: [] components: schemas: HappyHorse11T2VRequest: type: object required: - model - input properties: model: type: string enum: - happyhorse-1.1-t2v description: 'Model name. Available value: `happyhorse-1.1-t2v`.' input: $ref: '#/components/schemas/HappyHorse11T2VInput' parameters: $ref: '#/components/schemas/HappyHorse11T2VParameters' VideoTaskResponse: type: object properties: output: type: object properties: task_id: type: string description: Task ID. Valid for 24 hours for querying. task_status: type: string description: |- Task status. Enum values: - PENDING: Task queued - RUNNING: Task processing - SUCCEEDED: Task completed successfully - FAILED: Task failed - CANCELED: Task canceled - UNKNOWN: Task does not exist or status unknown request_id: type: string description: >- Unique request ID. Can be used for request tracing and issue diagnosis. code: type: string description: Error code. Only returned when the request fails. message: type: string description: Error message. Only returned when the request fails. ErrorResponse: type: object properties: code: type: string description: Error code. message: type: string description: Error message. request_id: type: string description: Request ID. HappyHorse11T2VInput: type: object required: - prompt properties: prompt: type: string description: >- Text prompt describing the desired video content. Supports input in any language, up to 5000 non-Chinese characters or 2500 Chinese characters. Excess content will be automatically truncated. maxLength: 5000 HappyHorse11T2VParameters: type: object properties: resolution: type: string enum: - 720P - 1080P description: |- Specifies the resolution tier of the generated video. - `720P` - `1080P`: default value. default: 1080P ratio: type: string enum: - '16:9' - '9:16' - '1:1' - '4:3' - '3:4' - '4:5' - '5:4' - '9:21' - '21:9' description: |- Specifies the aspect ratio of the generated video. - `16:9`: default value. - `9:16` - `1:1` - `4:3` - `3:4` - `4:5` - `5:4` - `9:21` - `21:9` default: '16:9' duration: type: integer description: >- Specifies the duration of the generated video in seconds. An integer in the range [3, 15]. Default: 5. minimum: 3 maximum: 15 default: 5 watermark: type: boolean description: >- Whether to add a watermark on the generated video. The watermark is positioned at the bottom-right corner with the fixed text "Happy Horse". - `true`: default value, add watermark. - `false`: no watermark. default: true seed: type: integer description: >- Random seed, range [0, 2147483647]. When unspecified, the system auto-generates a random seed. For better reproducibility, set a fixed seed. Note: due to the probabilistic nature of model generation, the same seed does not guarantee identical results every time. minimum: 0 maximum: 2147483647 securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: 'Pass `Authorization: Bearer ` in the request header.' ````