Seedance2.0 Real Human: Image to Video

# Python 3.10+: pip install comfy-sdk==0.4.0
import os

from comfy_sdk import Comfy

api_key = os.environ.get("COMFY_API_KEY", "").strip()
if not api_key: raise RuntimeError("Set COMFY_API_KEY")
os.environ.setdefault("COMFY_BASE_URL", "https://cloud.comfy.org")
client = Comfy(api_key=api_key)
workflow = client.workflows.from_json({
    "9": {
        "class_type": "ByteDanceCreateImageAsset",
        "inputs": {
            "group_id": "",
            "image": [
                "20",
                0
            ]
        },
        "_meta": {
            "title": "ByteDance Create Image Asset"
        }
    },
    "12": {
        "class_type": "PreviewAny",
        "inputs": {
            "source": [
                "9",
                1
            ]
        },
        "_meta": {
            "title": "Preview as Text (group_id)"
        }
    },
    "14": {
        "class_type": "ByteDance2ReferenceNode",
        "inputs": {
            "model": "Seedance 2.0",
            "model.auto_downscale": False,
            "model.auto_upscale": False,
            "model.duration": 7,
            "model.generate_audio": True,
            "model.prompt": "Use @asset_1 as a reference character. A young person with curly auburn hair floats underwater, eyes gently closed, \nexpression weightless and serene. Prismatic light refractions drift and morph \nacross their face in slow waves — shifting between teal, peach, and white — \nas the camera glides gently around them in a slow orbital move. \nCaustic light patterns ripple continuously across skin and hair. \nThe water carries a soft teal glow; bubbles rise in lazy clusters. \nShallow depth of field, soft film grain, dreamlike stillness, \nslow motion, 4K, pastel-teal color grade.",
            "model.ratio": "16:9",
            "model.reference_assets.asset_1": [
                "18",
                0
            ],
            "model.resolution": "720p",
            "seed": 118383194,
            "watermark": False
        },
        "_meta": {
            "title": "ByteDance Seedance 2.5 Reference to Video (Legacy)"
        }
    },
    "15": {
        "class_type": "SaveVideo",
        "inputs": {
            "codec": "auto",
            "filename_prefix": "video/Seedance2.0",
            "format": "auto",
            "format.codec": "auto",
            "video": [
                "14",
                0
            ]
        },
        "_meta": {
            "title": "Save Video"
        }
    },
    "18": {
        "class_type": "PreviewAny",
        "inputs": {
            "source": [
                "9",
                0
            ]
        },
        "_meta": {
            "title": "Preview as Text (asset_id)"
        }
    },
    "20": {
        "class_type": "LoadImage",
        "inputs": {
            "image": "real_human_demo.png"
        },
        "_meta": {
            "title": "Load Image (Real Human)"
        }
    }
})

# run() also passes api_key to the partner nodes in this workflow.
job = client.run(workflow, api_key=api_key)