# Kling v3 视频生成

> 视频生成

提交异步任务。请求体中的模型和参数按本模型文档填写，响应会返回任务 ID。

## 请求地址

`POST https://api.modelverse.cn/v1/tasks/submit`

## 请求体

## 响应

- **200** — 任务提交成功。
- **400** — 请求参数无效或任务创建失败。
- **default** — 错误响应。

## OpenAPI 定义

```json
{
  "openapi": "3.1.0",
  "x-language": "zh-CN",
  "info": {
    "title": "Kling-v3接口文档",
    "version": "1.0.0",
    "description": "这是 ModelVerse 上 `Kling-v3` 的视频接口文档，说明如何提交生成任务、查询任务状态、读取视频结果以及处理错误。\n接口路径包括 `POST /v1/tasks/submit`、`GET /v1/tasks/status`。\n"
  },
  "servers": [
    {
      "url": "https://api.modelverse.cn",
      "description": "该模型文档中使用的 ModelVerse API 端点。"
    }
  ],
  "tags": [
    {
      "name": "Kling/v3",
      "description": "Kling/v3 的异步视频任务接口。"
    }
  ],
  "security": [
    {
      "bearerAuth": []
    }
  ],
  "paths": {
    "/v1/tasks/submit": {
      "post": {
        "tags": [
          "Kling/v3"
        ],
        "operationId": "submitKlingV3Task",
        "summary": "Kling v3 视频生成",
        "description": "提交异步任务。请求体中的模型和参数按本模型文档填写，响应会返回任务 ID。\n",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/KlingV3TaskSubmitRequest"
              },
              "examples": {
                "textToVideo": {
                  "summary": "文生视频 请求",
                  "value": {
                    "model": "kling-v3",
                    "input": {
                      "prompt": "A beautiful sunset over the ocean with waves gently crashing"
                    },
                    "parameters": {
                      "kling_v3_type": "t2v",
                      "mode": "pro",
                      "aspect_ratio": "16:9",
                      "duration": 5,
                      "sound": "on"
                    }
                  }
                },
                "imageToVideo": {
                  "summary": "图生视频请求带a 首帧图像",
                  "value": {
                    "model": "kling-v3",
                    "input": {
                      "prompt": "The image comes to life with gentle movement"
                    },
                    "parameters": {
                      "kling_v3_type": "i2v",
                      "mode": "pro",
                      "duration": 5,
                      "image": "https://example.com/first_frame.jpg"
                    }
                  }
                },
                "firstAndTailFrames": {
                  "summary": "图生视频请求带first and tail frames",
                  "value": {
                    "model": "kling-v3",
                    "input": {
                      "prompt": "A girl walking through a garden"
                    },
                    "parameters": {
                      "kling_v3_type": "i2v",
                      "mode": "pro",
                      "duration": 5,
                      "image": "https://example.com/first_frame.jpg",
                      "image_tail": "https://example.com/last_frame.jpg"
                    }
                  }
                },
                "multiShotTextToVideo": {
                  "summary": "Multi-shot 文生视频 请求",
                  "value": {
                    "model": "kling-v3",
                    "parameters": {
                      "kling_v3_type": "t2v",
                      "mode": "pro",
                      "aspect_ratio": "16:9",
                      "duration": 5,
                      "multi_shot": true,
                      "shot_type": "customize",
                      "multi_prompt": [
                        {
                          "index": 1,
                          "prompt": "A person walking through a misty forest at dawn",
                          "duration": "2"
                        },
                        {
                          "index": 2,
                          "prompt": "A car speeding down a rainy street, headlights glowing",
                          "duration": "3"
                        }
                      ],
                      "sound": "on"
                    }
                  }
                },
                "motionControl": {
                  "summary": "Motion-control请求带参考图 and video",
                  "value": {
                    "model": "kling-v3",
                    "input": {
                      "img_url": "https://example.com/character.jpg",
                      "video_url": "https://example.com/motion_reference.mp4",
                      "prompt": "A person dancing gracefully"
                    },
                    "parameters": {
                      "kling_v3_type": "motion_control",
                      "duration": 5,
                      "aspect_ratio": "16:9",
                      "character_orientation": "image",
                      "mode": "std"
                    }
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "任务提交成功。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3TaskSubmitResponse"
                },
                "examples": {
                  "submitted": {
                    "summary": "已提交任务",
                    "value": {
                      "output": {
                        "task_id": "task_id"
                      },
                      "request_id": "request_id"
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "请求参数无效或任务创建失败。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3ErrorResponse"
                },
                "examples": {
                  "taskCreationError": {
                    "$ref": "#/components/examples/KlingV3TaskCreationError"
                  }
                }
              }
            }
          },
          "default": {
            "description": "错误响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3ErrorResponse"
                },
                "examples": {
                  "error": {
                    "$ref": "#/components/examples/KlingV3TaskCreationError"
                  }
                }
              }
            }
          }
        }
      }
    },
    "/v1/tasks/status": {
      "get": {
        "tags": [
          "Kling/v3"
        ],
        "operationId": "getKlingV3TaskStatus",
        "summary": "Kling v3 任务状态",
        "description": "查询异步任务状态。任务完成后，响应中会包含结果 URL、用量信息或错误信息。\n",
        "parameters": [
          {
            "name": "task_id",
            "in": "query",
            "required": true,
            "description": "Asynchronous task identifier returned by `/v1/tasks/submit`.",
            "schema": {
              "type": "string"
            },
            "examples": {
              "documented": {
                "summary": "源文档占位值",
                "value": "task_id"
              }
            }
          }
        ],
        "responses": {
          "200": {
            "description": "任务状态响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3TaskStatusResponse"
                },
                "examples": {
                  "success": {
                    "summary": "成功任务",
                    "value": {
                      "output": {
                        "task_id": "task_id",
                        "task_status": "Success",
                        "urls": [
                          "https://xxxxx/xxxx.mp4"
                        ],
                        "submit_time": 1756959000,
                        "finish_time": 1756959050
                      },
                      "usage": {
                        "duration": 5
                      },
                      "request_id": ""
                    }
                  },
                  "failure": {
                    "summary": "失败任务",
                    "value": {
                      "output": {
                        "task_id": "task_id",
                        "task_status": "Failure",
                        "submit_time": 1756959000,
                        "finish_time": 1756959019,
                        "error_message": "error_message"
                      },
                      "usage": {
                        "duration": 5
                      },
                      "request_id": ""
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "任务标识无效或任务状态查询失败。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3ErrorResponse"
                },
                "examples": {
                  "taskResponseError": {
                    "$ref": "#/components/examples/KlingV3TaskResponseError"
                  }
                }
              }
            }
          },
          "default": {
            "description": "错误响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/KlingV3ErrorResponse"
                },
                "examples": {
                  "error": {
                    "$ref": "#/components/examples/KlingV3TaskResponseError"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "securitySchemes": {
      "bearerAuth": {
        "type": "http",
        "scheme": "bearer",
        "bearerFormat": "API key",
        "description": "查询异步任务状态。任务完成后，响应中会包含结果 URL、用量信息或错误信息。\n"
      }
    },
    "schemas": {
      "KlingV3TaskSubmitRequest": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "model"
        ],
        "properties": {
          "model": {
            "type": "string",
            "const": "kling-v3",
            "description": "Model name. This schema is pinned to `kling-v3`."
          },
          "input": {
            "$ref": "#/components/schemas/KlingV3Input"
          },
          "parameters": {
            "$ref": "#/components/schemas/KlingV3Parameters"
          }
        }
      },
      "KlingV3Input": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "prompt": {
            "type": "string",
            "maxLength": 2500,
            "description": "Prompt used to guide video generation. Required for `t2v` and `i2v`\nwhen `parameters.multi_shot` is `false`; optional for\n`motion_control`.\n",
            "examples": [
              "A beautiful sunset over the ocean with waves gently crashing"
            ]
          },
          "negative_prompt": {
            "type": "string",
            "maxLength": 2500,
            "description": "用于限制不期望内容的负向提示词。"
          },
          "img_url": {
            "type": "string",
            "minLength": 1,
            "description": "Reference image URL or raw Base64 image. In `motion_control` mode,\nthis field is required together with `input.video_url`. When used\nwithout `input.video_url`, the source document lists it as a\nfirst-frame signal for implicit `i2v` routing.\n",
            "examples": [
              "https://example.com/character.jpg"
            ]
          },
          "video_url": {
            "type": "string",
            "format": "uri",
            "description": "Reference video URL for `motion_control` mode. MP4 and MOV are\nsupported. The referenced file must be no larger than 100 MB, with\nwidth and height between 340 px and 3850 px. The video must be at\nleast 3 seconds long; landscape videos can be up to 30 seconds and\nportrait videos can be up to 10 seconds.\n",
            "examples": [
              "https://example.com/motion_reference.mp4"
            ]
          },
          "first_frame_url": {
            "type": "string",
            "format": "uri",
            "description": "First-frame image URL. The source document lists this field as a\nfirst-frame signal for implicit `i2v` routing.\n"
          },
          "images": {
            "type": "array",
            "description": "First-frame image inputs. The source document lists this field as a\nfirst-frame signal for implicit `i2v` routing.\n",
            "items": {
              "type": "string",
              "minLength": 1
            }
          }
        }
      },
      "KlingV3Parameters": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "kling_v3_type": {
            "type": "string",
            "description": "Explicit generation mode. If omitted, the service infers\n`motion_control` when `input.video_url` is present, `i2v` when any\nfirst-frame image field is present, and `t2v` otherwise.\n",
            "enum": [
              "t2v",
              "i2v",
              "motion_control"
            ]
          },
          "mode": {
            "type": "string",
            "description": "Generation quality mode. `std` is 720P and `pro` is 1080P.",
            "enum": [
              "std",
              "pro"
            ],
            "default": "std"
          },
          "aspect_ratio": {
            "type": "string",
            "description": "Generated video aspect ratio. Ignored in `i2v` mode, where the\ninput image aspect ratio is used.\n",
            "enum": [
              "16:9",
              "9:16",
              "1:1"
            ],
            "default": "16:9"
          },
          "duration": {
            "type": "integer",
            "minimum": 3,
            "maximum": 15,
            "default": 5,
            "description": "Generated video duration in seconds. `t2v` and `i2v` support values\nfrom 3 to 15. `motion_control` supports 5 or 10.\n"
          },
          "watermark_enabled": {
            "type": "boolean",
            "description": "Whether to generate the result with a watermark."
          },
          "external_task_id": {
            "type": "string",
            "description": "Client-provided task ID. It does not overwrite the service-generated\ntask ID, but can be used to query the task. It must be unique per\nuser.\n"
          },
          "image": {
            "type": "string",
            "minLength": 1,
            "description": "First-frame reference image for `i2v` mode. Supports a public image\nURL or raw Base64-encoded image string. When using Base64, do not\ninclude a `data:image/...;base64,` prefix. Supported formats are\nJPG, JPEG, and PNG. The file must be no larger than 10 MB, width and\nheight must each be at least 300 px, and the aspect ratio must be\nbetween 1:2.5 and 2.5:1.\n",
            "examples": [
              "https://example.com/first_frame.jpg"
            ]
          },
          "image_tail": {
            "type": "string",
            "minLength": 1,
            "description": "Tail-frame reference image for first-and-last-frame control. Must be\nused together with `parameters.image` and follows the same URL,\nBase64, format, size, dimension, and aspect-ratio requirements.\n",
            "examples": [
              "https://example.com/last_frame.jpg"
            ]
          },
          "sound": {
            "type": "string",
            "description": "Whether to generate sound for `t2v` or `i2v` output.",
            "enum": [
              "on",
              "off"
            ],
            "default": "off"
          },
          "multi_shot": {
            "type": "boolean",
            "default": false,
            "description": "Whether to enable multi-shot mode. When `true`, `input.prompt` is\nignored. When `false`, `parameters.shot_type` and\n`parameters.multi_prompt` are ignored.\n"
          },
          "shot_type": {
            "type": "string",
            "description": "Multi-shot type. Required when `multi_shot` is `true`.",
            "enum": [
              "customize"
            ]
          },
          "multi_prompt": {
            "type": "array",
            "minItems": 1,
            "maxItems": 6,
            "description": "Custom multi-shot prompt list. Required when `multi_shot` is `true`\nand `shot_type` is `customize`. Each shot duration must be at least\n1 second and no greater than the total video duration; the sum of\nall shot durations must equal the total duration.\n",
            "items": {
              "$ref": "#/components/schemas/KlingV3MultiPromptItem"
            }
          },
          "character_orientation": {
            "type": "string",
            "description": "Character facing direction for `motion_control` mode. Required in\n`motion_control`.\n",
            "enum": [
              "image",
              "video"
            ]
          },
          "keep_original_sound": {
            "type": "string",
            "description": "Whether to keep the original audio from the reference video.",
            "enum": [
              "yes",
              "no"
            ],
            "default": "yes"
          }
        },
        "dependentRequired": {
          "image_tail": [
            "image"
          ]
        }
      },
      "KlingV3MultiPromptItem": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "index",
          "prompt",
          "duration"
        ],
        "properties": {
          "index": {
            "type": "integer",
            "minimum": 1,
            "description": "Shot index, starting from 1."
          },
          "prompt": {
            "type": "string",
            "minLength": 1,
            "maxLength": 512,
            "description": "Prompt for this shot."
          },
          "duration": {
            "type": "string",
            "minLength": 1,
            "description": "Shot duration in seconds, represented as a string."
          }
        }
      },
      "KlingV3TaskSubmitResponse": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "output",
          "request_id"
        ],
        "properties": {
          "output": {
            "$ref": "#/components/schemas/KlingV3TaskSubmitOutput"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识。"
          }
        }
      },
      "KlingV3TaskSubmitOutput": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "task_id"
        ],
        "properties": {
          "task_id": {
            "type": "string",
            "description": "异步任务唯一标识。"
          }
        }
      },
      "KlingV3TaskStatusResponse": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "output",
          "request_id"
        ],
        "properties": {
          "output": {
            "$ref": "#/components/schemas/KlingV3TaskStatusOutput"
          },
          "usage": {
            "$ref": "#/components/schemas/KlingV3Usage"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识。"
          }
        }
      },
      "KlingV3TaskStatusOutput": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "task_id",
          "task_status"
        ],
        "properties": {
          "task_id": {
            "type": "string",
            "description": "异步任务唯一标识。"
          },
          "task_status": {
            "$ref": "#/components/schemas/KlingV3TaskStatus"
          },
          "urls": {
            "type": "array",
            "description": "视频结果 URL 列表。",
            "items": {
              "type": "string",
              "format": "uri"
            }
          },
          "submit_time": {
            "type": "integer",
            "format": "int64",
            "description": "任务提交时间的 Unix 秒级时间戳。"
          },
          "finish_time": {
            "type": "integer",
            "format": "int64",
            "description": "任务完成时间的 Unix 秒级时间戳。"
          },
          "error_message": {
            "type": "string",
            "description": "任务失败时返回的错误信息。"
          }
        }
      },
      "KlingV3TaskStatus": {
        "type": "string",
        "description": "查询异步任务状态。任务完成后，响应中会包含结果 URL、用量信息或错误信息。\n",
        "enum": [
          "Pending",
          "Running",
          "Success",
          "Failure"
        ]
      },
      "KlingV3Usage": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "duration": {
            "type": "integer",
            "description": "Generated video duration in seconds."
          }
        }
      },
      "KlingV3ErrorResponse": {
        "type": "object",
        "additionalProperties": true,
        "required": [
          "error"
        ],
        "properties": {
          "error": {
            "$ref": "#/components/schemas/KlingV3ErrorObject"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识，如可用。"
          }
        }
      },
      "KlingV3ErrorObject": {
        "type": "object",
        "additionalProperties": true,
        "required": [
          "message",
          "type"
        ],
        "properties": {
          "message": {
            "type": "string",
            "description": "错误信息。"
          },
          "type": {
            "type": "string",
            "description": "错误类型。",
            "examples": [
              "invalid_request_error"
            ]
          },
          "code": {
            "type": [
              "string",
              "null"
            ],
            "description": "Error code. The source model document lists `006001094` for task\nresource shortage, `006001095` for task response error, and\n`006001099` for task creation error.\n",
            "examples": [
              "006001099"
            ]
          },
          "param": {
            "type": [
              "string",
              "null"
            ],
            "description": "相关请求参数，如有。"
          }
        }
      }
    },
    "examples": {
      "KlingV3TaskCreationError": {
        "summary": "Task creation error",
        "value": {
          "error": {
            "message": "Task creation error",
            "type": "invalid_request_error",
            "code": "006001099",
            "param": null
          },
          "request_id": "request_id"
        }
      },
      "KlingV3TaskResponseError": {
        "summary": "Task响应error",
        "value": {
          "error": {
            "message": "Task response error",
            "type": "invalid_request_error",
            "code": "006001095",
            "param": null
          },
          "request_id": "request_id"
        }
      }
    }
  }
}
```