# Vidu Extend 视频续写

> 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。
- **default** — 错误响应。

## OpenAPI 定义

```json
{
  "openapi": "3.1.0",
  "x-language": "zh-CN",
  "info": {
    "title": "Vidu-Extend接口文档",
    "version": "1.0.0",
    "description": "这是 ModelVerse 上 `Vidu-Extend` 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": "Vidu Extend",
      "description": "Video extension asynchronous task operations for Vidu Extend."
    }
  ],
  "paths": {
    "/v1/tasks/submit": {
      "post": {
        "tags": [
          "Vidu Extend"
        ],
        "operationId": "submitViduExtendTask",
        "summary": "Vidu Extend 视频续写",
        "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",
        "security": [
          {
            "bearerAuth": []
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/ViduExtendSubmitRequest"
              },
              "examples": {
                "documentedVideoUrl": {
                  "summary": "源文档 视频续写 请求",
                  "value": {
                    "model": "viduq2-turbo",
                    "input": {
                      "video_url": "https://umodelverse-inference.cn-wlcb.ufileos.com/maxcot-dance.mp4",
                      "last_frame_url": "https://umodelverse-inference.cn-wlcb.ufileos.com/ucloud-maxcot.jpg",
                      "prompt": "Continue the video with smooth camera movement"
                    },
                    "parameters": {
                      "vidu_type": "extend",
                      "duration": 5,
                      "resolution": "720p"
                    }
                  }
                },
                "base64LastFrame": {
                  "summary": "Extension请求带a Base64 last-frame reference",
                  "value": {
                    "model": "viduq2-pro",
                    "input": {
                      "video_url": "https://example.com/source-video.mp4",
                      "last_frame_url": "data:image/png;base64,{base64_encode}",
                      "prompt": "Extend the final action naturally with stable motion."
                    },
                    "parameters": {
                      "vidu_type": "extend",
                      "duration": 7,
                      "resolution": "1080p"
                    }
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "任务提交成功。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendSubmitResponse"
                },
                "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。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendErrorResponse"
                },
                "examples": {
                  "paramError": {
                    "$ref": "#/components/examples/ViduExtendParamError"
                  }
                }
              }
            }
          },
          "default": {
            "description": "错误响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendErrorResponse"
                },
                "examples": {
                  "error": {
                    "$ref": "#/components/examples/ViduExtendParamError"
                  }
                }
              }
            }
          }
        }
      }
    },
    "/v1/tasks/status": {
      "get": {
        "tags": [
          "Vidu Extend"
        ],
        "operationId": "getViduExtendTaskStatus",
        "summary": "Vidu Extend 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",
        "security": [
          {
            "bearerAuth": []
          }
        ],
        "parameters": [
          {
            "name": "task_id",
            "in": "query",
            "required": true,
            "description": "Asynchronous task identifier returned by `/v1/tasks/submit`.",
            "schema": {
              "type": "string"
            },
            "examples": {
              "placeholder": {
                "summary": "源文档占位值",
                "value": "task_id"
              }
            }
          }
        ],
        "responses": {
          "200": {
            "description": "任务状态响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendStatusResponse"
                },
                "examples": {
                  "success": {
                    "summary": "成功任务",
                    "value": {
                      "output": {
                        "task_id": "task_id",
                        "task_status": "Success",
                        "urls": [
                          "https://xxxxx/xxxx-extended.mp4"
                        ],
                        "submit_time": 1756959000,
                        "finish_time": 1756959050
                      },
                      "usage": {
                        "duration": 5
                      },
                      "request_id": ""
                    }
                  },
                  "failure": {
                    "summary": "失败任务",
                    "value": {
                      "output": {
                        "task_id": "task_id",
                        "task_status": "Failure",
                        "submit_time": 1756959000,
                        "finish_time": 1756959019,
                        "error_message": "error_message"
                      },
                      "usage": {
                        "duration": 5
                      },
                      "request_id": ""
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "任务标识或请求参数无效。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendErrorResponse"
                },
                "examples": {
                  "paramError": {
                    "$ref": "#/components/examples/ViduExtendParamError"
                  }
                }
              }
            }
          },
          "default": {
            "description": "错误响应。",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ViduExtendErrorResponse"
                },
                "examples": {
                  "error": {
                    "$ref": "#/components/examples/ViduExtendParamError"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "securitySchemes": {
      "bearerAuth": {
        "type": "http",
        "scheme": "bearer",
        "bearerFormat": "API key",
        "description": "查询异步任务状态。任务完成后，响应中会包含结果 URL、用量信息或错误信息。\n"
      }
    },
    "schemas": {
      "ViduExtendSubmitRequest": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "model",
          "input",
          "parameters"
        ],
        "properties": {
          "model": {
            "type": "string",
            "description": "Vidu Extend model name. This schema is pinned to the\n`Vidu-Extend` source document and only allows its documented\nvideo extension model values.\n",
            "enum": [
              "viduq2-turbo",
              "viduq2-pro"
            ]
          },
          "input": {
            "$ref": "#/components/schemas/ViduExtendInput"
          },
          "parameters": {
            "$ref": "#/components/schemas/ViduExtendParameters"
          }
        }
      },
      "ViduExtendInput": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "video_url"
        ],
        "properties": {
          "video_url": {
            "type": "string",
            "format": "uri",
            "description": "Publicly accessible video URL to extend. The source video duration\nmust be at least 4 seconds and no more than 1 minute.\n",
            "examples": [
              "https://umodelverse-inference.cn-wlcb.ufileos.com/maxcot-dance.mp4"
            ]
          },
          "last_frame_url": {
            "type": "string",
            "description": "Last-frame reference image as a URL or Base64-encoded image. The\nimage may be png, jpeg, jpg, or webp; its aspect ratio must be\nwithin the documented 1:4 to 4:1 bounds; it must not exceed 50 MB;\nand Base64-decoded bytes must be less than 10 MB. Base64 values\nmust include the content type prefix, for example\n`data:image/png;base64,{base64_encode}`.\n",
            "examples": [
              "https://umodelverse-inference.cn-wlcb.ufileos.com/ucloud-maxcot.jpg",
              "data:image/png;base64,{base64_encode}"
            ]
          },
          "prompt": {
            "type": "string",
            "description": "Text prompt used to control the extended video content.",
            "examples": [
              "Continue the video with smooth camera movement"
            ]
          }
        }
      },
      "ViduExtendParameters": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "vidu_type"
        ],
        "properties": {
          "vidu_type": {
            "type": "string",
            "const": "extend",
            "description": "Vidu interface type. This schema is pinned to `extend`."
          },
          "duration": {
            "type": "integer",
            "minimum": 1,
            "maximum": 7,
            "default": 5,
            "description": "Extension duration in seconds."
          },
          "resolution": {
            "type": "string",
            "enum": [
              "540p",
              "720p",
              "1080p"
            ],
            "default": "720p",
            "description": "Extended video resolution."
          }
        }
      },
      "ViduExtendSubmitResponse": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "output",
          "request_id"
        ],
        "properties": {
          "output": {
            "$ref": "#/components/schemas/ViduExtendSubmitOutput"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识。"
          }
        }
      },
      "ViduExtendSubmitOutput": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "task_id"
        ],
        "properties": {
          "task_id": {
            "type": "string",
            "description": "异步任务唯一标识。"
          }
        }
      },
      "ViduExtendStatusResponse": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "output",
          "request_id"
        ],
        "properties": {
          "output": {
            "$ref": "#/components/schemas/ViduExtendStatusOutput"
          },
          "usage": {
            "$ref": "#/components/schemas/ViduExtendUsage"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识。"
          }
        }
      },
      "ViduExtendStatusOutput": {
        "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": {
            "$ref": "#/components/schemas/ViduExtendTaskStatus"
          },
          "urls": {
            "type": "array",
            "description": "视频结果 URL 列表。",
            "items": {
              "type": "string",
              "format": "uri"
            }
          },
          "submit_time": {
            "type": "integer",
            "format": "int64",
            "description": "任务提交时间戳。"
          },
          "finish_time": {
            "type": "integer",
            "format": "int64",
            "description": "任务完成时间戳。"
          },
          "error_message": {
            "type": "string",
            "description": "任务失败时返回的错误信息。"
          }
        }
      },
      "ViduExtendTaskStatus": {
        "type": "string",
        "enum": [
          "Pending",
          "Running",
          "Success",
          "Failure"
        ],
        "description": "查询异步任务状态。任务完成后，响应中会包含结果 URL、用量信息或错误信息。\n"
      },
      "ViduExtendUsage": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "duration": {
            "type": "integer",
            "description": "Extended video duration in seconds."
          }
        }
      },
      "ViduExtendErrorResponse": {
        "type": "object",
        "additionalProperties": true,
        "required": [
          "error"
        ],
        "properties": {
          "error": {
            "$ref": "#/components/schemas/ViduExtendErrorObject"
          },
          "request_id": {
            "type": "string",
            "description": "唯一请求标识，如可用。"
          }
        }
      },
      "ViduExtendErrorObject": {
        "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": "错误码。",
            "examples": [
              "param_error"
            ]
          },
          "param": {
            "type": [
              "string",
              "null"
            ],
            "description": "与错误相关的请求参数。"
          }
        }
      }
    },
    "examples": {
      "ViduExtendParamError": {
        "summary": "参数错误",
        "value": {
          "error": {
            "message": "Invalid param",
            "type": "invalid_request_error",
            "code": "param_error",
            "param": "parameters.duration"
          },
          "request_id": "request_id"
        }
      }
    }
  }
}
```