FLUX 3 Extend Video：模型和 API 上的视频到视频剪辑延续 | RunComfy

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/extend-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The camera keeps tracking as she slows near a wooden overlook, turns toward the lens and smiles. Soft ocean spray and distant gulls continue.",
    "video_url": "https://playgrounds-storage-public.runcomfy.net/tools/7400/media-files/input.mp4"
  }'

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

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

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

{
  "type": "object",
  "title": "modelApiDoc_navInputSchema",
  "required": [
    "prompt",
    "video_url"
  ],
  "properties": {
    "prompt": {
      "title": "提示词",
      "description": "描述视频如何从源片段末帧继续的文本提示词。",
      "type": "string",
      "default": "The camera keeps tracking as she slows near a wooden overlook, turns toward the lens and smiles. Soft ocean spray and distant gulls continue."
    },
    "video_url": {
      "title": "视频 URL",
      "description": "输入视频的 URL。MP4，小于 50 MB，时长小于 15 秒。",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7400/media-files/input.mp4"
    },
    "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": "auto"
    },
    "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）。auto 表示由模型自动选择。",
      "type": "string",
      "enum": [
        "auto",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20"
      ],
      "default": "auto"
    },
    "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
    }
  }
}