> ## 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. # Veo3.1-Pro 视频生成 > - Veo 3.1 Generate Preview (veo-3.1-generate-preview) 模型支持文生视频、首帧图生视频等多种模式 - 异步处理模式，使用返回的任务ID [进行查询](/cn/api-manual/task-management/get-task-detail) - 生成的视频链接，有效期为24小时，请尽快保存 ## OpenAPI ````yaml cn/api-manual/video-series/veo3.1/veo-3.1-generate-preview-generate.json POST /v1/videos/generations openapi: 3.1.0 info: title: veo-3.1-generate-preview接口 description: 使用AI模型创建视频生成任务，支持文本转视频、图片转视频等多种生成模式 license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: 生产环境 security: - bearerAuth: [] tags: - name: 视频生成 description: AI视频生成相关接口 paths: /v1/videos/generations: post: tags: - 视频生成 summary: veo-3.1-generate-preview接口 description: >- - Veo 3.1 Generate Preview (veo-3.1-generate-preview) 模型支持文生视频、首帧图生视频等多种模式 - 异步处理模式，使用返回的任务ID [进行查询](/cn/api-manual/task-management/get-task-detail) - 生成的视频链接，有效期为24小时，请尽快保存 operationId: createVideoGeneration requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/VideoGenerationRequest' examples: text_to_video: summary: 文本生成视频 value: model: veo-3.1-generate-preview prompt: A cat playing piano responses: '200': description: 视频生成任务创建成功 content: application/json: schema: $ref: '#/components/schemas/VideoGenerationResponse' '400': description: 请求参数错误 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_request message: Invalid request parameters type: invalid_request_error '401': description: 未认证、Token无效或过期 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: 配额不足、需要充值 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: 无权限访问 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: >- Token does not have access to model: veo-3.1-generate-preview type: invalid_request_error '429': description: 请求频率超限 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: 服务器内部错误 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: 视频生成模型名称 enum: - veo-3.1-generate-preview default: veo-3.1-generate-preview example: veo-3.1-generate-preview prompt: type: string description: 提示词，描述想要生成什么样的视频，限制为2000token example: A cat playing piano maxLength: 2000 image_urls: type: array description: |- 参考图像URL列表，用于图生视频功能 **注意：** - 单次请求最多支持`3`张图像（`FIRST&LAST`模式支持1~2张，`REFERENCE`模式支持最多3张） - 图像大小：不超过 `10MB` - 支持的文件格式：`.jpg`、`.jpeg`、`.png`、`.webp` items: type: string format: uri maxItems: 3 example: - http://example.com/image1.jpg generation_type: type: string description: >- 视频生成模式，默认会根据图像数量进行匹配，建议手动选择，可选三种模式： - `TEXT`：文本生视频 - `FIRST&LAST`：首尾帧生视频，可传入`1`~`2`张图像 - `REFERENCE`：参考图生视频，最多可传入`3`张图像，时长需固定为`8`秒，比例需固定为`16:9`，除`generate_audio`参数外，其他高级参数均不支持 enum: - TEXT - FIRST&LAST - REFERENCE aspect_ratio: type: string description: 视频宽高比。设置为 `auto` 时：图生视频会根据输入图片的比例自动选择，文生视频会根据提示词内容自动选择 enum: - auto - '16:9' - '9:16' generate_audio: type: boolean description: 是否生成音频，启用后会增加费用，默认为`true` duration: type: integer description: 视频时长（秒），时长越长费用越高，默认为`4` enum: - 4 - 6 - 8 'n': type: integer description: 生成视频数量，数量越多费用越高，默认为`1` minimum: 1 maximum: 4 quality: type: string description: 视频分辨率，默认为`720p` enum: - 720p - 1080p - 4k seed: type: integer description: 随机种子，用于复现生成结果 minimum: 1 maximum: 4294967295 negative_prompt: type: string description: 负面提示词，描述不希望在视频中出现的内容 person_generation: type: string description: >- 人物生成控制，默认为`allow_adult`。`allow_adult`：仅允许生成成人；`dont_allow`：禁止在视频中包含人物/人脸 enum: - allow_adult - dont_allow resize_mode: type: string description: 调整模式（仅图生视频有效），默认为`pad` enum: - pad - crop callback_url: type: string description: 任务完成后的HTTPS回调地址 format: uri example: https://your-domain.com/webhooks/video-task-completed VideoGenerationResponse: type: object properties: created: type: integer description: 任务创建时间戳 example: 1757169743 id: type: string description: 任务ID example: task-unified-1757169743-7cvnl5zw model: type: string description: 实际使用的模型名称 example: veo-3.1-generate-preview status: type: string description: 任务状态 enum: - pending - processing - completed - failed example: pending ErrorResponse: type: object properties: error: type: object properties: code: type: string description: 错误代码标识符 message: type: string description: 错误描述信息 type: type: string description: 错误类型 securitySchemes: bearerAuth: type: http scheme: bearer description: |- ##所有接口均需要使用Bearer Token进行认证## **获取 API Key：** 访问 [API Key 管理页面](https://evolink.ai/dashboard/keys) 获取您的 API Key **使用时在请求头中添加：** ``` Authorization: Bearer YOUR_API_KEY ``` ````