Seedance1.0 Pro: Start End 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({
    "34": {
        "class_type": "ByteDanceFirstLastFrameNode",
        "inputs": {
            "aspect_ratio": "1:1",
            "camera_fixed": False,
            "duration": 10,
            "first_frame": [
                "35",
                0
            ],
            "generate_audio": False,
            "last_frame": [
                "36",
                0
            ],
            "model": "seedance-1-0-pro-250528",
            "prompt": "A wizard in a red robe, seen from behind holding two flames in his raised hands, turns around as the camera circles to a side profile, revealing he is an old man with a grey beard. As he turns, he brings his hands together, merging the two flames into one large ball of fire.",
            "resolution": "1080p",
            "seed": 1076553912,
            "watermark": False
        },
        "_meta": {
            "title": "ByteDance First-Last-Frame to Video"
        }
    },
    "35": {
        "class_type": "LoadImage",
        "inputs": {
            "image": "UPLOADED_image_FILENAME"
        },
        "_meta": {
            "title": "Load Image"
        }
    },
    "36": {
        "class_type": "LoadImage",
        "inputs": {
            "image": "UPLOADED_image_2_FILENAME"
        },
        "_meta": {
            "title": "Load Image"
        }
    },
    "37": {
        "class_type": "SaveVideo",
        "inputs": {
            "filename_prefix": "video/ByteDance-FLF2V",
            "format": "auto",
            "format.codec": "auto",
            "video": [
                "34",
                0
            ]
        },
        "_meta": {
            "title": "Save Video"
        }
    }
})
# Replace each example.com URL with a public URL of your file.
workflow.set_input("35", "image", client.assets.from_url("https://example.com/replace-with-a-url/image"))
workflow.set_input("36", "image", client.assets.from_url("https://example.com/replace-with-a-url/image_2"))

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