> ## Documentation Index > Fetch the complete documentation index at: https://evolink.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Kling-4.0 图生视频 > - Kling-4.0 Image to Video (kling-v4-image-to-video) 模型支持图生视频功能 - 支持首帧、尾帧，以及首尾帧之间的中间帧 - 画面比例由首帧图决定，**不接受 `aspect_ratio`** - 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/kling/kling-v4-image-to-video.json POST /v1/videos/generations openapi: 3.1.0 info: title: kling-v4-image-to-video接口 description: 使用AI模型创建图生视频任务 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: kling-v4-image-to-video接口 description: >- - Kling-4.0 Image to Video (kling-v4-image-to-video) 模型支持图生视频功能 - 支持首帧、尾帧，以及首尾帧之间的中间帧 - 画面比例由首帧图决定，**不接受 `aspect_ratio`** - 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: basic: summary: 首帧图生视频 value: model: kling-v4-image-to-video prompt: 让画面中的人物缓缓转头微笑 image_start: https://example.com/portrait.jpg duration: 5 quality: 720p first_last_frame: summary: 首帧 + 尾帧 value: model: kling-v4-image-to-video prompt: 从白天过渡到夜晚 image_start: https://example.com/day.jpg image_end: https://example.com/night.jpg duration: 10 quality: 1080p with_keyframes: summary: 首帧 + 中间帧 + 尾帧 value: model: kling-v4-image-to-video prompt: 花苞缓缓绽放，随后镜头拉远 image_start: https://example.com/bud.jpg keyframes: - image_url: https://example.com/half-open.jpg - image_url: https://example.com/open.jpg image_end: https://example.com/wide.jpg duration: 5 quality: 720p keyframes_without_end: summary: 首帧 + 中间帧（不传尾帧） value: model: kling-v4-image-to-video prompt: 镜头从清晨的街道推进到傍晚的广场，光线逐渐变暖 image_start: https://example.com/morning.jpg keyframes: - image_url: https://example.com/noon.jpg - image_url: https://example.com/afternoon.jpg duration: 8 quality: 1080p 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: kling-v4-image-to-video' 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 - image_start - prompt properties: model: type: string description: 视频生成模型名称 enum: - kling-v4-image-to-video default: kling-v4-image-to-video example: kling-v4-image-to-video image_start: type: string format: uri description: |- 首帧图片URL，用于图生视频功能（**必传**） **注意：** - 图像大小：不超过 `10MB` - 支持的文件格式：`.jpg`、`.jpeg`、`.png` - 图像尺寸：宽高 ≥ `300px`，宽高比在 `1:2.5` ~ `2.5:1` 之间 - 图像URL需要服务器能直接访问，或者访问时会直接下载 example: https://example.com/portrait.jpg image_end: type: string format: uri description: |- 尾帧图片URL **注意：** - 必须同时提供 `image_start`（首帧） - 支持的文件格式：`.jpg`、`.jpeg`、`.png` - 图像大小：不超过 `10MB` - 图像URL需要服务器能直接访问，或者访问时会直接下载 example: https://example.com/night.jpg keyframes: type: array description: >- 中间帧图片列表，按顺序均匀分布在首帧与尾帧之间 **注意：** - 数量：`1` ~ `8` 张 - 首帧、中间帧、尾帧合计不超过 `10` 张，且不超过 `duration` + 1（如 `3` 秒最多 `4` 张、`5` 秒最多 `6` 张） - 可不传尾帧，此时结尾画面由模型生成 - 图像大小：不超过 `10MB` - 支持的文件格式：`.jpg`、`.jpeg`、`.png` - 图像尺寸：宽高 ≥ `300px`，宽高比在 `1:2.5` ~ `2.5:1` 之间 - 图像URL需要服务器能直接访问，或者访问时会直接下载 items: type: object properties: image_url: type: string format: uri description: 中间帧图片URL required: - image_url additionalProperties: false minItems: 0 maxItems: 8 example: - image_url: https://example.com/half-open.jpg - image_url: https://example.com/open.jpg prompt: type: string description: |- 文本提示词，描述想要生成什么样的视频 **注意：** - 最长`2500`字符 example: 让画面中的人物缓缓转头微笑 maxLength: 2500 duration: type: integer description: |- 视频时长（秒），默认为`5`秒 **说明：** - 范围：`3` ~ `30` 的整数 minimum: 3 maximum: 30 default: 5 example: 5 quality: type: string description: |- 分辨率档位 **说明：** - `720p`：标准画质 - `1080p`：高品质画质 enum: - 720p - 1080p default: 720p example: 720p callback_url: type: string description: |- 任务完成后的HTTPS回调地址 **回调时机：** - 任务完成（completed）、失败（failed）或取消（cancelled）时触发 - 在计费确认完成后发送 **安全限制：** - 仅支持HTTPS协议 - 禁止回调到内网IP地址（127.0.0.1、10.x.x.x、172.16-31.x.x、192.168.x.x等） - URL长度不超过`2048`字符 **回调机制：** - 超时时间：`10`秒 - 失败后最多重试`3`次（会分别在失败的`1`秒/`2`秒/`4`秒后进行重试） - 回调响应体格式与任务查询接口返回的格式一致 - 回调地址若返回2xx状态码视为成功，其他状态码会触发重试 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: kling-v4-image-to-video object: type: string enum: - video.generation.task description: 任务的具体类型 progress: type: integer description: 任务进度百分比 (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: 任务状态 enum: - pending - processing - completed - failed example: pending task_info: $ref: '#/components/schemas/VideoTaskInfo' description: 视频任务详细信息 type: type: string enum: - text - image - audio - video description: 任务的输出类型 example: video usage: $ref: '#/components/schemas/VideoUsage' description: 使用量和计费信息 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 VideoTaskInfo: type: object properties: can_cancel: type: boolean description: 任务是否可以取消 example: true estimated_time: type: integer description: 预估完成时间(秒) minimum: 0 example: 300 video_duration: type: integer description: 视频时长(秒) example: 5 VideoUsage: type: object description: 使用量和计费信息 properties: billing_rule: type: string description: 计费规则 enum: - per_call - per_token - per_second example: per_second credits_reserved: type: number description: 预估消耗积分数 minimum: 0 example: 53.38 user_group: type: string description: 用户组类别 example: default 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 ``` ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.