BASE=https://api.nunchux.ai
TASKS=$BASE/v1/bytedance/contents/generations/tasks

# 1. Submit
SUBMIT=$(curl -sS --fail-with-body "$TASKS" \
  -H "X-API-Key: $NUNCHUX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "User-Agent: YourApp/1.0" \
  -d '{
    "model": "dreamina-seedance-2-5-260628",
    "content": [
      { "type": "text", "text": "a fox trotting through a snowy forest at dawn" }
    ],
    "resolution": "720p",
    "generate_audio": false
  }') || { echo "submit failed: $SUBMIT" >&2; exit 1; }
TASK=$(jq -er '.id' <<<"$SUBMIT") || { echo "no id in: $SUBMIT" >&2; exit 1; }

# 2. Poll until the status is terminal
DELAY=5
for _ in $(seq 1 90); do
  RESP=$(curl -sS "$TASKS/$TASK" \
    -H "X-API-Key: $NUNCHUX_API_KEY" \
    -H "User-Agent: YourApp/1.0")
  STATUS=$(jq -r '.status // ""' <<<"$RESP")
  case "$STATUS" in succeeded|failed|cancelled|expired) break ;; esac
  sleep "$DELAY"; DELAY=$(( DELAY * 2 > 30 ? 30 : DELAY * 2 ))
done

# 3. Check for failure
[ "$STATUS" = "succeeded" ] || { echo "task $STATUS: $(jq -r '.error // "no error"' <<<"$RESP")" >&2; exit 1; }

# 4. Download
curl -sSL -o seedance.mp4 "$(jq -r '.content.video_url' <<<"$RESP")"

# pip install requests
import os, time, requests

BASE = "https://api.nunchux.ai"
TASKS = f"{BASE}/v1/bytedance/contents/generations/tasks"
HEADERS = {
    "X-API-Key": os.environ["NUNCHUX_API_KEY"],
    "User-Agent": "YourApp/1.0",
}

# 1. Submit
submit = requests.post(
    TASKS,
    headers=HEADERS,
    json={
        "model": "dreamina-seedance-2-5-260628",
        "content": [
            {"type": "text", "text": "a fox trotting through a snowy forest at dawn"}
        ],
        "resolution": "720p",
        "generate_audio": False,
    },
)
if not submit.ok:
    raise RuntimeError(f"submit failed: HTTP {submit.status_code} {submit.text}")
task = submit.json()["id"]

# 2. Poll until the status is terminal
delay = 5
for _ in range(90):
    data = requests.get(f"{TASKS}/{task}", headers=HEADERS).json()
    status = data.get("status", "")
    if status in ("succeeded", "failed", "cancelled", "expired"):
        break
    time.sleep(delay)
    delay = min(delay * 2, 30)
else:
    raise TimeoutError("Seedance task did not reach a terminal status")

# 3. Check for failure
if status != "succeeded":
    raise RuntimeError(f"Seedance task {status}: {data.get('error')}")

# 4. Download
with requests.get(data["content"]["video_url"], stream=True, timeout=300) as r:
    r.raise_for_status()
    with open("seedance.mp4", "wb") as f:
        for chunk in r.iter_content(1 << 14):
            f.write(chunk)