Blackforestlabs FLUX 3 Keyframes to Video API | 定价与文档

blackforestlabs/flux-3/keyframes-to-video

FLUX 3 Keyframes to Video 根据锁定到精确帧位置的静止图像之间的提示引导运动构建剪辑，并在 720p 或 1080p 处提供可选的本机音频。

1. 快速开始

使用 RunComfy 的 API 运行 blackforestlabs/flux-3/keyframes-to-video。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 \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/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 \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/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": "提示词",
      "description": "描述你想生成的视频内容的文本提示词。",
      "type": "string",
      "default": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt."
    },
    "keyframes": {
      "title": "关键帧",
      "description": "固定在生成视频帧位置上的关键帧图片。最多 10 个关键帧，每个需有唯一的 frame_index（从 0 起，不超过时长 × 24，24 fps）。",
      "type": "array",
      "default": [
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
          "frame_index": 0
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
          "frame_index": 60
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-3.webp",
          "frame_index": 120
        }
      ],
      "items": {
        "image_url": {
          "title": "图片 URL",
          "description": "关键帧图片的 URL（PNG、JPEG 或 WebP）。",
          "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。必须唯一，且不超过时长 × 24。",
          "type": "integer",
          "format": "int_slider_with_range",
          "minimum": 0,
          "maximum": 480,
          "default": 0
        }
      },
      "maxItems": 10,
      "minItems": 1
    },
    "aspect_ratio": {
      "title": "宽高比",
      "description": "生成视频的宽高比。auto 表示由模型自动选择。",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "resolution": {
      "title": "分辨率",
      "description": "生成视频的分辨率。",
      "type": "string",
      "enum": [
        "720p",
        "1080p"
      ],
      "default": "720p"
    },
    "duration": {
      "title": "时长",
      "description": "生成视频的时长（秒）。需要明确时长以便校验关键帧位置。",
      "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": "是否为视频生成同步音频。",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "安全容忍度",
      "description": "生成视频的安全容忍级别。0 最严格，4 最宽松。",
      "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。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 \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/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 \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt.",
    "keyframes": [
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
        "frame_index": 0
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
        "frame_index": 60
      },
      {
        "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/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": "提示词",
      "description": "描述你想生成的视频内容的文本提示词。",
      "type": "string",
      "default": "One continuous tracking shot: she starts on the wet coastal road facing the distant lighthouse, walks through the wooden gate as the mist thins, and arrives at the lighthouse base just as sunlight breaks through. Soft ocean spray, distant gulls, natural footsteps on wet asphalt."
    },
    "keyframes": {
      "title": "关键帧",
      "description": "固定在生成视频帧位置上的关键帧图片。最多 10 个关键帧，每个需有唯一的 frame_index（从 0 起，不超过时长 × 24，24 fps）。",
      "type": "array",
      "default": [
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-1.webp",
          "frame_index": 0
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-2.webp",
          "frame_index": 60
        },
        {
          "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7399/media-files/ref-promo-3.webp",
          "frame_index": 120
        }
      ],
      "items": {
        "image_url": {
          "title": "图片 URL",
          "description": "关键帧图片的 URL（PNG、JPEG 或 WebP）。",
          "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。必须唯一，且不超过时长 × 24。",
          "type": "integer",
          "format": "int_slider_with_range",
          "minimum": 0,
          "maximum": 480,
          "default": 0
        }
      },
      "maxItems": 10,
      "minItems": 1
    },
    "aspect_ratio": {
      "title": "宽高比",
      "description": "生成视频的宽高比。auto 表示由模型自动选择。",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "resolution": {
      "title": "分辨率",
      "description": "生成视频的分辨率。",
      "type": "string",
      "enum": [
        "720p",
        "1080p"
      ],
      "default": "720p"
    },
    "duration": {
      "title": "时长",
      "description": "生成视频的时长（秒）。需要明确时长以便校验关键帧位置。",
      "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": "是否为视频生成同步音频。",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "安全容忍度",
      "description": "生成视频的安全容忍级别。0 最严格，4 最宽松。",
      "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 Keyframes to Video 根据锁定到精确帧位置的静止图像之间的提示引导运动构建剪辑，并在 720p 或 1080p 处提供可选的本机音频。

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 Keyframes to Video 根据锁定到精确帧位置的静止图像之间的提示引导运动构建剪辑，并在 720p 或 1080p 处提供可选的本机音频。

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 Keyframes to Video：模型和 API 上的多关键帧图像到视频 | RunComfy

FLUX 3 Keyframes to Video 根据锁定到精确帧位置的静止图像之间的提示引导运动构建剪辑，并在 720p 或 1080p 处提供可选的本机音频。

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 Keyframes to Video：模型和 API 上的多关键帧图像到视频 | RunComfy

FLUX 3 Keyframes to Video 根据锁定到精确帧位置的静止图像之间的提示引导运动构建剪辑，并在 720p 或 1080p 处提供可选的本机音频。

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