Seedance 2.5 image to video: API guide

# One Idempotency-Key per job, made once: resend with the same $KEY after a timeout, a 429 or a 5xx
KEY=$(uuidgen)
curl https://api.revana.si/v1/generations \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $KEY" \
  -d '{
  "model": "seedance-2.5",
  "input": {
    "prompt": "The model turns her head toward the camera and smiles as the wind lifts her hair, slow push-in, city traffic in the background",
    "image_url": "https://example.com/portrait.jpg",
    "duration": 6,
    "resolution": "720p",
    "aspect_ratio": "adaptive",
    "audio": true
  },
  "max_cost_usd": 3
}'

# One Idempotency-Key per job, made once: resend with the same $KEY after a timeout, a 429 or a 5xx
KEY=$(uuidgen)
curl https://api.revana.si/v1/generations \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $KEY" \
  -d '{
  "model": "seedance-2.5",
  "input": {
    "prompt": "Time-lapse: the empty plot becomes a finished house, workers moving fast, clouds racing",
    "image_url": "https://example.com/plot.jpg",
    "end_image_url": "https://example.com/house.jpg",
    "duration": 8,
    "resolution": "720p",
    "aspect_ratio": "adaptive"
  },
  "max_cost_usd": 3
}'

import os, time, uuid, requests

API = "https://api.revana.si/v1"
H = {"Authorization": f"Bearer {os.environ['REVANA_API_KEY']}"}

# 1. Upload the picture from your computer (skip this if it already has a public https link).
up = requests.post(f"{API}/uploads", headers=H, json={"content_type": "image/jpeg", "bytes": os.path.getsize("product.jpg"), "filename": "product.jpg"}).json()
with open("product.jpg", "rb") as fh:
    requests.put(up["upload_url"], data=fh, headers=up["upload_headers"]).raise_for_status()

# 2. Quote, then animate it. The clip starts on exactly this picture.
body = {"model": "seedance-2.5", "input": {
    "prompt": "The bottle slowly turns on the marble counter as morning light sweeps across the label, water droplets glisten",
    "image_url": up["url"], "duration": 5, "resolution": "720p", "aspect_ratio": "adaptive", "audio": True}}
quote = requests.post(f"{API}/generations/quote", headers=H, json=body).json()
print("price", quote["quoted_usd"])
key = str(uuid.uuid4())  # made once: resend with the same key after a timeout, a 429 or a 5xx
job = requests.post(f"{API}/generations", headers={**H, "Idempotency-Key": key},
                    json={**body, "max_cost_usd": quote["reserved_usd"]}).json()

# 3. Wait, then download.
while job["status"] in ("queued", "running"):
    time.sleep(5)
    job = requests.get(f"{API}/generations/{job['id']}", headers=H).json()
if job["status"] == "succeeded":
    open("product.mp4", "wb").write(requests.get(f"{API}/generations/{job['id']}/content", headers=H).content)