> ## Documentation Index > Fetch the complete documentation index at: https://docs.evolink.ai/llms.txt > Use this file to discover all available pages before exploring further. # Sora-2 Video Generation > - Sora 2 Preview (sora-2-preview) supports text-to-video, image-to-video and more - Async processing, use returned task ID to [query status](/en/api-manual/task-management/get-task-detail) - Generated video links are valid for 24 hours, please save promptly **Note:** - Sora2 has very strict content moderation, tasks may fail due to this - Real person images are not supported ## OpenAPI ````yaml /en/api-manual/video-series/sora2/sora-2-preview-video-generate.json POST /v1/videos/generations openapi: 3.1.0 info: title: Sora-2-Preview API description: >- Create video generation tasks using AI models, supporting text-to-video, image-to-video and more license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: Production security: - bearerAuth: [] tags: - name: Video Generation description: AI video generation APIs paths: /v1/videos/generations: post: tags: - Video Generation summary: Sora-2-Preview API description: >- - Sora 2 Preview (sora-2-preview) supports text-to-video, image-to-video and more - Async processing, use returned task ID to [query status](/en/api-manual/task-management/get-task-detail) - Generated video links are valid for 24 hours, please save promptly **Note:** - Sora2 has very strict content moderation, tasks may fail due to this - Real person images are not supported operationId: createVideoGeneration requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/VideoGenerationRequest' examples: text_to_video: summary: Text-to-Video value: model: sora-2-preview prompt: A cat playing piano responses: '200': description: Video generation task created successfully content: application/json: schema: $ref: '#/components/schemas/VideoGenerationResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_request message: Invalid request parameters type: invalid_request_error '401': description: Unauthenticated, invalid or expired token content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: Insufficient quota, recharge required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: insufficient_quota message: Insufficient quota. Please top up your account. type: insufficient_quota '403': description: Access denied content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: 'Token does not have access to model: sora-2-preview' type: invalid_request_error '429': description: Rate limit exceeded content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: rate_limit_exceeded message: Too many requests, please try again later type: rate_limit_error '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: internal_error message: Internal server error type: api_error components: schemas: VideoGenerationRequest: type: object required: - model - prompt properties: model: type: string description: Video generation model name default: sora-2-preview example: sora-2-preview prompt: type: string description: Prompt describing the video to generate, max 5000 tokens example: A cat playing piano maxLength: 5000 aspect_ratio: type: string description: >- Video aspect ratio. `1280x720` generates landscape video, `720x1280` generates portrait video enum: - 1280x720 - 720x1280 - '16:9' - '9:16' example: '16:9' duration: type: integer description: |- Video duration (seconds), default `4` **Note:** - Only supports `4`, `8`, `12` seconds - Longer duration costs more example: 4 image_urls: type: array description: >- Reference image URLs for image-to-video **Note:** - Real person images not supported - Max 1 image per request - Max size: 10MB - Formats: .jpg, .jpeg, .png, .webp - **Image pixel dimensions must exactly match the selected aspect_ratio** (e.g., if aspect_ratio is `1280x720`, the uploaded image must be exactly 1280x720 pixels) - Image URL must be directly accessible by server, or trigger download when accessed (typically URLs ending with image extensions like .png, .jpg) items: type: string format: uri maxItems: 1 example: - http://example.com/image1.jpg callback_url: type: string description: >- HTTPS callback URL for task completion **Callback Timing:** - Triggered when task is completed, failed, or cancelled - Sent after billing confirmation **Security Restrictions:** - HTTPS protocol only - Private IP addresses not allowed (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.) - URL length max 2048 characters **Callback Mechanism:** - Timeout: 10 seconds - Max 3 retries on failure (at 1s/2s/4s intervals) - Response format matches task query API - 2xx status code = success, other codes trigger retry format: uri example: https://your-domain.com/webhooks/video-task-completed VideoGenerationResponse: type: object properties: created: type: integer description: Task creation timestamp example: 1757169743 id: type: string description: Task ID example: task-unified-1757169743-7cvnl5zw model: type: string description: Model name used example: sora-2-preview object: type: string enum: - video.generation.task description: Task type progress: type: integer description: Task progress (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: Task status enum: - pending - processing - completed - failed example: pending task_info: $ref: '#/components/schemas/VideoTaskInfo' type: type: string enum: - text - image - audio - video description: Output type example: video usage: $ref: '#/components/schemas/VideoUsage' ErrorResponse: type: object properties: error: type: object properties: code: type: string description: Error code identifier message: type: string description: Error description type: type: string description: Error type VideoTaskInfo: type: object properties: can_cancel: type: boolean description: Whether task can be cancelled example: true estimated_time: type: integer description: Estimated completion time (seconds) minimum: 0 example: 300 video_duration: type: integer description: Video duration (seconds) example: 9 VideoUsage: type: object properties: billing_rule: type: string description: Billing rule enum: - per_call - per_token - per_second example: per_call credits_reserved: type: number description: Estimated credits minimum: 0 example: 7 user_group: type: string description: User group category example: default securitySchemes: bearerAuth: type: http scheme: bearer description: >- ##All APIs require Bearer Token authentication## **Get API Key:** Visit [API Key Management Page](https://evolink.ai/dashboard/keys) to get your API Key **Add to request header:** ``` Authorization: Bearer YOUR_API_KEY ``` ````