Blackforestlabs FLUX 3 Draft Key Frames to Video API | 定价与文档

blackforestlabs/flux-3/keyframes-to-video/draft

FLUX 3 草稿关键帧到视频从锁定到帧位置的静态图像构建快速 720p 草稿，并具有可重复使用的缓存以供以后增强。

1. 快速开始

使用 RunComfy 的 API 运行 blackforestlabs/flux-3/keyframes-to-video/draft。可接受的输入与输出请参阅模型的数据结构说明。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/keyframes-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
        "frame_index": 120
      }
    ]
  }'

2. 身份验证

将 YOUR_API_TOKEN 环境变量设置为您的 API 密钥（在个人资料中管理密钥），并在每个请求的 Authorization 标头中以 Bearer 令牌形式携带： Authorization: Bearer $YOUR_API_TOKEN。

3. API 参考

提交请求

提交异步生成任务，将立即获得 request_id 以及用于查询状态、获取结果和取消的 URL。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/keyframes-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
        "frame_index": 120
      }
    ]
  }'

查询请求状态

根据 request_id 获取当前状态（"in_queue"、"in_progress"、"completed" 或 "cancelled"）。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

获取请求结果

获取指定 request_id 的最终输出与元数据；若任务未完成，响应会返回当前状态，便于继续轮询。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

取消请求

通过 request_id 取消排队中的任务；进行中的任务无法取消。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. 文件输入

托管文件（URL）

请提供可公网访问的 HTTPS 地址。确保目标主机允许服务端拉取（无需登录或 Cookie）、未被限流或拦截爬虫。建议：图片 ≤ 50 MB（约 4K），视频 ≤ 100 MB（约 720p 下 2–5 分钟）。私有资源请使用稳定或预签名 URL。

5. 数据结构

输入结构

{
  "type": "object",
  "title": "输入结构",
  "required": [
    "prompt",
    "keyframes"
  ],
  "properties": {
    "prompt": {
      "title": "迅速的",
      "description": "描述草稿视频的文本提示。",
      "type": "string",
      "default": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds."
    },
    "keyframes": {
      "title": "关键帧",
      "description": "关键帧图像固定到生成的草稿中的帧位置。最多 10 个具有唯一帧索引值的关键帧（从 0 开始，在 24 fps 时最多持续时间 × 24）。",
      "type": "array",
      "default": [
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
          "frame_index": 0
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
          "frame_index": 60
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
          "frame_index": 120
        }
      ],
      "items": {
        "image_url": {
          "title": "图片网址",
          "description": "关键帧图像（PNG、JPEG 或 WebP）的 URL。",
          "type": "string",
          "format": "image_uri",
          "default": ""
        },
        "frame_index": {
          "title": "帧索引",
          "description": "该关键帧在生成的 24 fps 视频中的帧位置。必须是唯一的，且最多持续时间 × 24。",
          "type": "integer",
          "format": "int_slider_with_range",
          "minimum": 0,
          "maximum": 480,
          "default": 0
        }
      },
      "maxItems": 10,
      "minItems": 1
    },
    "aspect_ratio": {
      "title": "纵横比",
      "description": "生成的拔模的纵横比。 auto 让模型选择。",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "auto"
    },
    "duration": {
      "title": "期间",
      "description": "草稿持续时间以整秒为单位，从 5 到 20。",
      "type": "integer",
      "enum": [
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15,
        16,
        17,
        18,
        19,
        20
      ],
      "default": 5
    },
    "generate_audio": {
      "title": "生成音频",
      "description": "是否为草稿视频生成音频。",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "安全耐受性",
      "description": "生成视频的安全容差级别。 0 是最严格的，4 是最宽松的。",
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 2
    }
  }
}

输出结构

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "单张图片 URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "单个视频 URL"
      },
      "images": {
        "type": "array",
        "description": "多张图片 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "多个视频 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy 是首选的 ComfyUI 平台，提供 ComfyUI 在线环境和服务，以及 ComfyUI 工作流具有惊艳的视觉效果。 RunComfy还提供 AI Models, 帮助艺术家利用最新的AI工具创作出令人惊叹的艺术作品。

1. 快速开始

使用 RunComfy 的 API 运行 blackforestlabs/flux-3/keyframes-to-video/draft。可接受的输入与输出请参阅模型的数据结构说明。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/keyframes-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
        "frame_index": 120
      }
    ]
  }'

3. API 参考

提交请求

提交异步生成任务，将立即获得 request_id 以及用于查询状态、获取结果和取消的 URL。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/keyframes-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
        "frame_index": 120
      }
    ]
  }'

查询请求状态

根据 request_id 获取当前状态（"in_queue"、"in_progress"、"completed" 或 "cancelled"）。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

获取请求结果

获取指定 request_id 的最终输出与元数据；若任务未完成，响应会返回当前状态，便于继续轮询。

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

取消请求

通过 request_id 取消排队中的任务；进行中的任务无法取消。

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

{
  "type": "object",
  "title": "输入结构",
  "required": [
    "prompt",
    "keyframes"
  ],
  "properties": {
    "prompt": {
      "title": "迅速的",
      "description": "描述草稿视频的文本提示。",
      "type": "string",
      "default": "One continuous tracking shot of a mountain steam train: it pulls away from a timber station, curves through a pine forest bend, and arrives at a stone tunnel mouth. Soft steam hiss, wheel clatter, distant forest birds."
    },
    "keyframes": {
      "title": "关键帧",
      "description": "关键帧图像固定到生成的草稿中的帧位置。最多 10 个具有唯一帧索引值的关键帧（从 0 开始，在 24 fps 时最多持续时间 × 24）。",
      "type": "array",
      "default": [
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-1.webp",
          "frame_index": 0
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-2.webp",
          "frame_index": 60
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7408/media-files/ref-promo-3.webp",
          "frame_index": 120
        }
      ],
      "items": {
        "image_url": {
          "title": "图片网址",
          "description": "关键帧图像（PNG、JPEG 或 WebP）的 URL。",
          "type": "string",
          "format": "image_uri",
          "default": ""
        },
        "frame_index": {
          "title": "帧索引",
          "description": "该关键帧在生成的 24 fps 视频中的帧位置。必须是唯一的，且最多持续时间 × 24。",
          "type": "integer",
          "format": "int_slider_with_range",
          "minimum": 0,
          "maximum": 480,
          "default": 0
        }
      },
      "maxItems": 10,
      "minItems": 1
    },
    "aspect_ratio": {
      "title": "纵横比",
      "description": "生成的拔模的纵横比。 auto 让模型选择。",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "auto"
    },
    "duration": {
      "title": "期间",
      "description": "草稿持续时间以整秒为单位，从 5 到 20。",
      "type": "integer",
      "enum": [
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15,
        16,
        17,
        18,
        19,
        20
      ],
      "default": 5
    },
    "generate_audio": {
      "title": "生成音频",
      "description": "是否为草稿视频生成音频。",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "安全耐受性",
      "description": "生成视频的安全容差级别。 0 是最严格的，4 是最宽松的。",
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 2
    }
  }
}

输出结构

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "单张图片 URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "单个视频 URL"
      },
      "images": {
        "type": "array",
        "description": "多张图片 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "多个视频 URL",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

FLUX 3 草稿关键帧到视频从锁定到帧位置的静态图像构建快速 720p 草稿，并具有可重复使用的缓存以供以后增强。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

FLUX 3 草稿关键帧到视频从锁定到帧位置的静态图像构建快速 720p 草稿，并具有可重复使用的缓存以供以后增强。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

FLUX 3 草稿关键帧到视频：模型和 API 上的快速多关键帧草稿 |运行舒适 | Models and API | RunComfy

FLUX 3 草稿关键帧到视频从锁定到帧位置的静态图像构建快速 720p 草稿，并具有可重复使用的缓存以供以后增强。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构

FLUX 3 草稿关键帧到视频：模型和 API 上的快速多关键帧草稿 |运行舒适 | Models and API | RunComfy

FLUX 3 草稿关键帧到视频从锁定到帧位置的静态图像构建快速 720p 草稿，并具有可重复使用的缓存以供以后增强。

目录

1. 快速开始

2. 身份验证

3. API 参考

提交请求

查询请求状态

获取请求结果

取消请求

4. 文件输入

托管文件（URL）

5. 数据结构

输入结构

输出结构