FLUX 3 First Last Frame to Video：首尾關鍵幀影片生成，模型與 API | RunComfy

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/first-last-frame-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "start_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7398/media-files/ref-promo-start.webp",
    "end_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7398/media-files/ref-promo-end.webp",
    "prompt": "He grips the rope tightly on the dock, then moves beside the boat as the camera follows in one continuous shot. Soft harbor water and distant gulls."
  }'

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": [
    "start_image_url",
    "end_image_url",
    "prompt"
  ],
  "properties": {
    "start_image_url": {
      "title": "起始圖 URL",
      "description": "用作影片首幀的圖片 URL（PNG、JPEG 或 WebP）。",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7398/media-files/ref-promo-start.webp"
    },
    "end_image_url": {
      "title": "結束圖 URL",
      "description": "用作影片末幀的圖片 URL（PNG、JPEG 或 WebP）。",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7398/media-files/ref-promo-end.webp"
    },
    "prompt": {
      "title": "提示詞",
      "description": "描述你想生成的影片內容的文字提示詞。",
      "type": "string",
      "default": "He grips the rope tightly on the dock, then moves beside the boat as the camera follows in one continuous shot. Soft harbor water and distant gulls."
    },
    "aspect_ratio": {
      "title": "寬高比",
      "description": "生成影片的寬高比。auto 表示由模型自動選擇。",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "resolution": {
      "title": "解析度",
      "description": "生成影片的解析度。",
      "type": "string",
      "enum": [
        "720p",
        "1080p"
      ],
      "default": "720p"
    },
    "duration": {
      "title": "時長",
      "description": "生成影片的時長（秒）。需要明確時長以便放置結束幀。",
      "type": "integer",
      "enum": [
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15,
        16,
        17,
        18,
        19,
        20
      ],
      "default": 5
    },
    "generate_audio": {
      "title": "生成音訊",
      "description": "是否為影片生成同步音訊。",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "安全容忍度",
      "description": "生成影片的安全容忍級別。0 最嚴格，4 最寬鬆。",
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 2
    }
  }
}