black-forest-labs/flux-3/start-end-to-video

# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/black-forest-labs/flux-3/start-end-to-video" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "prompt": "A cinematic transition from a quiet sunrise over a misty mountain lake to a vibrant golden-hour scene at the same location. The camera slowly glides forward across the water as fog lifts, light intensifies, birds begin to circle overhead, and the environment becomes warmer and more alive. Natural motion, smooth continuity between the start and end frames, realistic water ripples, subtle lens movement, and atmospheric detail.",
    "start_image": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/4c7f8c3d8f45.jpeg"
    ],
    "end_image": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/40dcae8c87c3.jpeg"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5,
    "generate_audio": true
  }
}'

# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
  -H "Authorization: Bearer YOUR_API_KEY"

import time, requests

API_KEY = "YOUR_API_KEY"
HEADERS = {"Authorization": f"Bearer {API_KEY}"}

# 1) Submit
resp = requests.post(
    "https://www.namifusion.com/api/v1/marketplace/run/black-forest-labs/flux-3/start-end-to-video",
    headers=HEADERS,
    json={
        "input": {
            "prompt": "A cinematic transition from a quiet sunrise over a misty mountain lake to a vibrant golden-hour scene at the same location. The camera slowly glides forward across the water as fog lifts, light intensifies, birds begin to circle overhead, and the environment becomes warmer and more alive. Natural motion, smooth continuity between the start and end frames, realistic water ripples, subtle lens movement, and atmospheric detail.",
            "start_image": [
                "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/4c7f8c3d8f45.jpeg"
            ],
            "end_image": [
                "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/40dcae8c87c3.jpeg"
            ],
            "aspect_ratio": "16:9",
            "resolution": "720p",
            "duration": 5,
            "generate_audio": True
        }
    },
)
resp.raise_for_status()  # 401/402/429/5xx stop here instead of polling a bad task
task = resp.json()

# 2) Poll until a terminal state (completed / failed / cancelled).
#    This model is allowed up to 1800s server-side.
deadline = time.time() + 1860
while task.get("status") not in ("completed", "failed", "cancelled"):
    if time.time() > deadline:
        raise TimeoutError(f"still {task.get('status')} — keep the task_uuid and poll later")
    time.sleep(3)
    poll = requests.get(f"https://www.namifusion.com/api/v1/marketplace/run/tasks/{task['task_uuid']}", headers=HEADERS)
    poll.raise_for_status()
    task = poll.json()

print(task["status"], task.get("output"))

const API_KEY = "YOUR_API_KEY";
const HEADERS = { Authorization: `Bearer ${API_KEY}` };

// 1) Submit
const resp = await fetch("https://www.namifusion.com/api/v1/marketplace/run/black-forest-labs/flux-3/start-end-to-video", {
  method: "POST",
  headers: { ...HEADERS, "Content-Type": "application/json" },
  body: JSON.stringify({
    "input": {
      "prompt": "A cinematic transition from a quiet sunrise over a misty mountain lake to a vibrant golden-hour scene at the same location. The camera slowly glides forward across the water as fog lifts, light intensifies, birds begin to circle overhead, and the environment becomes warmer and more alive. Natural motion, smooth continuity between the start and end frames, realistic water ripples, subtle lens movement, and atmospheric detail.",
      "start_image": [
        "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/4c7f8c3d8f45.jpeg"
      ],
      "end_image": [
        "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/10/08/40dcae8c87c3.jpeg"
      ],
      "aspect_ratio": "16:9",
      "resolution": "720p",
      "duration": 5,
      "generate_audio": true
    }
  }),
});
if (!resp.ok) throw new Error(`submit failed: ${resp.status} ${await resp.text()}`);
let task = await resp.json();

// 2) Poll until a terminal state (completed / failed / cancelled).
//    This model is allowed up to 1800s server-side.
const deadline = Date.now() + 1860 * 1000;
while (!["completed", "failed", "cancelled"].includes(task.status)) {
  if (Date.now() > deadline) throw new Error(`still ${task.status} — keep the task_uuid and poll later`);
  await new Promise((r) => setTimeout(r, 3000));
  const poll = await fetch(`https://www.namifusion.com/api/v1/marketplace/run/tasks/${task.task_uuid}`, { headers: HEADERS });
  if (!poll.ok) throw new Error(`poll failed: ${poll.status}`);
  task = await poll.json();
}

console.log(task.status, task.output);