Vidu Q3 Image-to-Video with Audio

# 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({
    "14": {
        "class_type": "Vidu3ImageToVideoNode",
        "inputs": {
            "image": [
                "16",
                0
            ],
            "model": "viduq3-pro",
            "model.audio": True,
            "model.duration": 6,
            "model.resolution": "720p",
            "prompt": "Shot 1 (0-2s): Boy turns alarmed, shouts: \"Run! NOW!\" They break pose, start running right, exit frame. Snow kicks up.\nShot 2 (2-4s): Side tracking. Running through forest hand-in-hand, hair streaming, trees blur past. Look back fearfully.\nShot 3 (4-6s): Low angle. Leap over log, airborne slow-mo, land and run into mist. Dark shapes pursue behind.\nSound: shout, rapid footsteps, breathing, branches, pursuit sounds. Color: increased contrast, dark shadows behind.",
            "seed": 861064363
        },
        "_meta": {
            "title": "Vidu Q3 Image-to-Video Generation"
        }
    },
    "15": {
        "class_type": "SaveVideo",
        "inputs": {
            "filename_prefix": "video/vidu_q3_i2v",
            "format": "auto",
            "format.codec": "auto",
            "video": [
                "14",
                0
            ]
        },
        "_meta": {
            "title": "Save Video"
        }
    },
    "16": {
        "class_type": "LoadImage",
        "inputs": {
            "image": "two_characters.png"
        },
        "_meta": {
            "title": "Load Image"
        }
    }
})

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