Seedance 2.0 API :
Génération vidéo ByteDance

import requests, time

API_KEY = "your_chinamodelapi_key"
BASE_URL = "https://api.chinamodelapi.com/v1"
HEADERS = {"Authorization": f"Bearer {API_KEY}", "Content-Type": "application/json"}

# Step 1: Submit video generation task
payload = {
    "model": "seedance-2.0",
    "prompt": "A cinematic aerial shot of a mountain range at sunrise, golden hour lighting, 4K quality, smooth camera pan",
    "duration": 8,    # seconds (4–16)
    "resolution": "1080p"
}
resp = requests.post(f"{BASE_URL}/video/generations", json=payload, headers=HEADERS)
task_id = resp.json()["task_id"]
print(f"Task submitted: {task_id}")

# Step 2: Poll for result
while True:
    result = requests.get(f"{BASE_URL}/video/tasks/{task_id}", headers=HEADERS).json()
    if result["status"] == "succeeded":
        print("Video URL:", result["video_url"])
        break
    elif result["status"] == "failed":
        raise Exception("Generation failed")
    time.sleep(5)  # poll every 5 seconds

import base64

# Encode your reference image as base64
with open("reference.jpg", "rb") as f:
    img_b64 = base64.b64encode(f.read()).decode()

payload = {
    "model": "seedance-2.0",
    "prompt": "The person slowly turns toward the camera with a warm smile",
    "image": f"data:image/jpeg;base64,{img_b64}",
    "duration": 6,
    "resolution": "720p"
}
# ... same polling logic as above