Bytedance Seedance 1.5 Pro API | Pricing & Docs

bytedance/seedance-v1.5-pro/image-to-video

Seedance 1.5 Pro는 텍스트나 이미지에서 동기화된 대화, 카메라 컨트롤, 원활한 오디오-비주얼 스토리텔링이 포함된 시네마틱 다국어 비디오를 생성하여 광고, 더빙, 크리에이티브 쇼트 제작에 활용됩니다.

1. Get started

Use RunComfy's API to run bytedance/seedance-v1.5-pro/image-to-video. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-v1.5-pro/image-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same.  The subway train moves rapidly, emitting a low rumbling echo. ",
    "first_frame_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.png"
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-v1.5-pro/image-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same.  The subway train moves rapidly, emitting a low rumbling echo. ",
    "first_frame_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.png"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

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

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

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

Cancel a request

Cancel a queued job by request_id, in-progress jobs cannot be cancelled.

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

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input",
  "required": [
    "prompt",
    "first_frame_image_url"
  ],
  "properties": {
    "prompt": {
      "title": "프롬프트",
      "description": "더 나은 결과를 위해 프롬프트는 500자 미만이어야 합니다.",
      "type": "string",
      "default": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same.  The subway train moves rapidly, emitting a low rumbling echo. "
    },
    "first_frame_image_url": {
      "title": "시작 이미지",
      "description": "",
      "type": "string",
      "validations": [
        {
          "validation_rule": "width_pixels<",
          "validation_value": 6000,
          "validation_error": "업로드된 이미지의 너비와 높이는 6000픽셀을 초과할 수 없습니다."
        },
        {
          "validation_rule": "height_pixels<",
          "validation_value": 6000,
          "validation_error": "업로드된 이미지의 너비와 높이는 6000픽셀을 초과할 수 없습니다."
        },
        {
          "validation_rule": "width_pixels>",
          "validation_value": 300,
          "validation_error": "업로드된 이미지의 너비와 높이는 300픽셀 미만이어서는 안 됩니다."
        },
        {
          "validation_rule": "height_pixels>",
          "validation_value": 300,
          "validation_error": "업로드된 이미지의 너비와 높이는 300픽셀 미만이어서는 안 됩니다."
        },
        {
          "validation_rule": "width/height>",
          "validation_value": 0.4,
          "validation_error": "화면 비율은 0.4에서 2.5 사이여야 합니다."
        },
        {
          "validation_rule": "width/height<",
          "validation_value": 2.5,
          "validation_error": "화면 비율은 0.4에서 2.5 사이여야 합니다."
        },
        {
          "validation_rule": "file_size_mb<",
          "validation_value": 30,
          "validation_error": "파일 크기는 30MB 미만이어야 합니다."
        }
      ],
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.png"
    },
    "resolution": {
      "title": "해상도",
      "description": "",
      "type": "string",
      "enum": [
        "480p",
        "720p",
        "1080p"
      ],
      "default": "480p"
    },
    "ratio": {
      "title": "화면 비율 (가로:세로)",
      "description": "",
      "type": "string",
      "enum": [
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16",
        "21:9",
        "adaptive"
      ],
      "default": "adaptive"
    },
    "duration": {
      "title": "길이",
      "description": "",
      "type": "integer",
      "enum": [
        4,
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12
      ],
      "default": 5
    },
    "generate_audio": {
      "title": "오디오 생성",
      "description": "",
      "type": "boolean",
      "default": true
    },
    "camera_fixed": {
      "title": "카메라 고정",
      "description": "비디오에서 카메라를 고정할지 여부를 설정합니다.",
      "type": "boolean",
      "default": true
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": { "type": "string", "format": "uri" }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": { "type": "string", "format": "uri" }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

Seedance 1.5 Pro: 내장 오디오 및 립싱크가 포함된 시네마틱 비디오 생성 | RunComfy