BASE=https://api.nunchux.ai

# 1. Submit
SUBMIT=$(curl -sS --fail-with-body "$BASE/v1/alibaba/services/aigc/video-generation/video-synthesis" \
  -H "X-API-Key: $NUNCHUX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "User-Agent: YourApp/1.0" \
  -d '{
    "model": "wan3.0-video",
    "input": { "prompt": "a fox trotting through a snowy forest at dawn" },
    "parameters": { "resolution": "720P", "duration": 5, "watermark": false }
  }') || { echo "submit failed: $SUBMIT" >&2; exit 1; }
TASK=$(jq -er '.output.task_id' <<<"$SUBMIT") || { echo "no task_id in: $SUBMIT" >&2; exit 1; }

# 2. Poll until the status is terminal
DELAY=5
for _ in $(seq 1 90); do
  RESP=$(curl -sS "$BASE/v1/alibaba/tasks/$TASK" \
    -H "X-API-Key: $NUNCHUX_API_KEY" \
    -H "User-Agent: YourApp/1.0")
  STATUS=$(jq -r '.output.task_status // ""' <<<"$RESP")
  case "$STATUS" in SUCCEEDED|FAILED|CANCELED) break ;; esac
  sleep "$DELAY"; DELAY=$(( DELAY * 2 > 30 ? 30 : DELAY * 2 ))
done

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

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

# pip install requests
import os, time, requests

BASE = "https://api.nunchux.ai"
HEADERS = {
    "X-API-Key": os.environ["NUNCHUX_API_KEY"],
    "User-Agent": "YourApp/1.0",
}

# 1. Submit
submit = requests.post(
    f"{BASE}/v1/alibaba/services/aigc/video-generation/video-synthesis",
    headers=HEADERS,
    json={
        "model": "wan3.0-video",
        "input": {"prompt": "a fox trotting through a snowy forest at dawn"},
        "parameters": {"resolution": "720P", "duration": 5, "watermark": False},
    },
)
if not submit.ok:
    raise RuntimeError(f"submit failed: HTTP {submit.status_code} {submit.text}")
task = submit.json()["output"]["task_id"]

# 2. Poll until the status is terminal
delay = 5
for _ in range(90):
    data = requests.get(f"{BASE}/v1/alibaba/tasks/{task}", headers=HEADERS).json()
    status = data.get("output", {}).get("task_status", "")
    if status in ("SUCCEEDED", "FAILED", "CANCELED"):
        break
    time.sleep(delay)
    delay = min(delay * 2, 30)
else:
    raise TimeoutError("Wan task did not reach a terminal status")

# 3. Check for failure
if status != "SUCCEEDED":
    raise RuntimeError(f"Wan task {status}: {data['output'].get('message')}")

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

{
  "model": "wan3.0-video",
  "input": {
    "prompt": "the fox turns and trots toward the camera",
    "media": [
      { "type": "first_frame", "url": "https://example.com/frame.jpg" }
    ]
  },
  "parameters": { "resolution": "720P", "duration": 5, "watermark": false }
}

{
  "model": "wan3.0-video",
  "input": {
    "prompt": "the person from Image 1 walks through the doorway from Image 2, slow tracking shot",
    "media": [
      { "type": "reference_image", "url": "https://example.com/ref-1.jpg" },
      { "type": "reference_image", "url": "https://example.com/ref-2.jpg" }
    ]
  },
  "parameters": { "resolution": "720P", "duration": 5, "watermark": false }
}