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API 参考
API 参考

HeyGen Video Text-to-Video

根据文本生成带有声音的 5 至 15 秒视频，可选择用参考图像、视频或音频引导。

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01

概览

使用支持的模型提交Text to Video请求。使用返回的 Task ID 查询状态，或提供 callback_url 接收下方列出的投递。

快速开始

  1. 创建 API Key，并将其设置为 RUNAPI_API_KEY。
  2. 选择一个支持的模型，并发送与该模型 Schema 匹配的 POST 请求。
  3. 保存返回的任务 ID，随后轮询到终态，或处理下方列出的回调。

端点

POST /api/v1/heygen_video/text_to_video
基础 URL
https://runapi.ai
API 版本
v1
身份验证
Authorization: Bearer YOUR_API_TOKEN
02

支持的模型

打开模型页可查看当前价格、限流和商业使用详情。

03

请求 Schema

JSON 请求体

字段和允许的取值取决于所选模型。提供 callback_url 后，它会收到下方列出的 Task 投递。

heygen-video-110 个字段
aspect_ratiostring
可选

Generated video aspect ratio; adaptive follows the first reference image or video and is available only with reference media at 480p or 768p.

可选值: adaptive, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16
callback_urlstring
可选

Webhook URL for async notifications.

duration_secondsinteger
可选

Generated video duration in seconds.

可选值: 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 默认值: 5
modelstring
必填

Model slug.

output_resolutionstring
可选

Generated video resolution; 1080p and 2k support only 16:9 and 9:16.

可选值: 480p, 768p, 1080p, 2k 默认值: 768p
promptstring
必填

Video generation prompt describing the scene, dialogue, and sound.

范围: 1 - 16000
reference_audio_urlsarray
可选

Public HTTPS reference audio URLs, up to 32 MB each; requires reference images or videos.

项数限制: 3
reference_image_urlsarray
可选

Public HTTPS reference image URLs, up to 16 MB each; up to 12 reference files in total across images, videos, and audio.

项数限制: 9
reference_video_urlsarray
可选

Public HTTPS reference video URLs with aspect ratio between 1:4 and 4:1, up to 32 MB each; only the first 5 seconds of each video are used.

项数限制: 3
seedinteger
可选

Random seed for reproducible generation.

范围: 0 - 4294967295

条件规则

当列出的全部条件同时匹配时，应用这些要求。

  1. 当 reference_audio_urls present
    必填
    不可提供
  2. 当 reference_image_urls absent, reference_video_urls absent
    必填
    不可提供
  3. 当 output_resolution = 1080p
    必填
    不可提供
  4. 当 output_resolution = 2k
    必填
    不可提供
04

创建已接受

HTTP 202

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "processing"
      ],
      "type": "string"
    },
    "task_replayed": {
      "type": "boolean"
    }
  },
  "required": [
    "id",
    "status"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "id": "tsk_reference_demo",
  "status": "processing"
}
05

轮询处理中

HTTP 200

GET /api/v1/heygen_video/text_to_video/:id

响应 Schema
JSON 
{
  "properties": {
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "processing"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "id": "tsk_reference_demo",
  "status": "processing"
}
06

轮询已完成

HTTP 200

GET /api/v1/heygen_video/text_to_video/:id

响应 Schema
JSON 
{
  "properties": {
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "completed"
      ],
      "type": "string"
    },
    "usage": {
      "properties": {
        "cost": {
          "type": "number"
        }
      },
      "required": [
        "cost"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "videos": {
      "items": {
        "properties": {
          "url": {
            "type": "string",
            "x-runapi-generated-media": true
          }
        },
        "required": [
          "url"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    }
  },
  "required": [
    "id",
    "status",
    "videos",
    "usage"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "id": "tsk_reference_demo",
  "status": "completed",
  "usage": {
    "cost": 0.05
  },
  "videos": [
    {
      "url": "https://file.runapi.ai/reference-video.mp4"
    }
  ]
}
07

轮询失败

HTTP 200

GET /api/v1/heygen_video/text_to_video/:id

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "failed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Task processing failed.",
  "id": "tsk_reference_demo",
  "status": "failed"
}
08

客户回调：已完成

HTTP 200

POST callback_url

响应 Schema
JSON 
{
  "properties": {
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "completed"
      ],
      "type": "string"
    },
    "usage": {
      "properties": {
        "cost": {
          "type": "number"
        }
      },
      "required": [
        "cost"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "videos": {
      "items": {
        "properties": {
          "url": {
            "type": "string",
            "x-runapi-generated-media": true
          }
        },
        "required": [
          "url"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    }
  },
  "required": [
    "id",
    "status",
    "videos",
    "usage"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "id": "tsk_reference_demo",
  "status": "completed",
  "usage": {
    "cost": 0.05
  },
  "videos": [
    {
      "url": "https://file.runapi.ai/reference-video.mp4"
    }
  ]
}
09

客户回调：失败

HTTP 200

POST callback_url

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "properties": {
            "code": {
              "type": "string"
            },
            "limit_cents": {
              "type": "integer"
            },
            "message": {
              "type": "string"
            },
            "reset_at": {
              "format": "date-time",
              "type": [
                "string",
                "null"
              ]
            },
            "used_cents": {
              "type": "integer"
            },
            "window": {
              "enum": [
                "1h",
                "1d",
                "7d",
                "daily",
                "weekly",
                "monthly",
                "lifetime"
              ],
              "type": "string"
            }
          },
          "required": [
            "code",
            "message"
          ],
          "type": "object",
          "unevaluatedProperties": false
        }
      ]
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "failed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": {
    "code": "generation_failed",
    "message": "Task processing failed."
  },
  "id": "tsk_reference_demo",
  "status": "failed"
}
10

错误

HTTP 401

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Authentication required"
}
11

错误

HTTP 401

GET /api/v1/heygen_video/text_to_video/:id

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Authentication required"
}
12

错误

HTTP 400

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "oneOf": [
    {
      "properties": {
        "error": {
          "description": "Human-readable error message.",
          "type": "string"
        }
      },
      "required": [
        "error"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    {
      "properties": {
        "error": {
          "description": "Human-readable validation summary.",
          "type": "string"
        },
        "errors": {
          "additionalProperties": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "description": "Validation messages keyed by public request field, with an array of human-readable strings for each field.",
          "type": "object"
        }
      },
      "required": [
        "error",
        "errors"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  ]
}

响应示例

JSON 
{
  "error": "model must be one of: heygen-video-1"
}
13

错误

HTTP 402

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Insufficient balance"
}
14

错误

HTTP 429

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "API key credit limit exceeded"
}
15

错误

HTTP 409

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "The request uses features that are not supported for the selected model"
}
16

错误

HTTP 429

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Rate limit reached. Please retry later."
}
17

错误

HTTP 503

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Service under maintenance, please try again later"
}
18

错误

HTTP 504

POST /api/v1/heygen_video/text_to_video

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "The request timed out"
}
19

错误

HTTP 404

GET /api/v1/heygen_video/text_to_video/:id

响应 Schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

响应示例

JSON 
{
  "error": "Task with id 'tsk_reference_demo' not found"
}
20

生成的代码示例

直接使用 cURL，或安装所用语言的 SDK。每个示例都会提交本参考中经过验证的请求。

安装

Shell 
pip install runapi-heygen-video
PYTHON 
import os
from runapi.heygen_video import HeyGenVideoClient

client = HeyGenVideoClient(api_key=os.environ["RUNAPI_API_KEY"])
task = client.text_to_video.create(
  model="heygen-video-1",
  prompt="A plant supervisor in a plain grey coat stands beside a conveyor line and speaks to camera.",
  aspect_ratio="16:9",
  output_resolution="768p"
)