Kling 4.0 Image to Video

kwaivgi/kling-v4.0/image-to-video

kwaivgi/kling-v4.0/image-to-video. Esplora API di modelli per immagini, video e scambio volto. Prova un modello e integralo tramite un’unica API REST.

Modelli correlati

Kling 4.0 Image to Video Modelli correlati 1

Parametri completi, schema di output e prezzi aggiornati

Marketplace delle API per modelli IAUna piattaforma per tuttoPiù popolareTerminiEsplora API di modelli per immagini, video e scambio volto. Prova un modello e integralo tramite un’unica API REST.
image *Start frameimage_upload—image/jpeg,image/png · 1–1 items
promptPrompttextarea—≤ 5000 chars
last_imageLast frameimage_upload—image/* · 0–1 items
keyframesOrdered middle framesimage_upload—image/* · 0–9 items
resolutionResolutionselect720p720p | 1080p
durationDurationselect53 ~ 30 · step 1 · 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | …
aspect_ratioAspect ratioselect—16:9 | 9:16 | 1:1 | 21:9

Parametri completi, schema di output e prezzi aggiornati

Scopri di piùUna piattaforma per tuttoEsplora API di modelli per immagini, video e scambio volto. Prova un modello e integralo tramite un’unica API REST.
videosarray<string>

API

Esplora API di modelli per immagini, video e scambio volto. Prova un modello e integralo tramite un’unica API REST.

cURL
# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/kwaivgi/kling-v4.0/image-to-video" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "image": "https://example.com/input.jpg",
    "resolution": "720p",
    "duration": 5
  }
}'

# 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"
Python
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/kwaivgi/kling-v4.0/image-to-video",
    headers=HEADERS,
    json={
        "input": {
            "image": "https://example.com/input.jpg",
            "resolution": "720p",
            "duration": 5
        }
    },
)
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"))
JavaScript
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/kwaivgi/kling-v4.0/image-to-video", {
  method: "POST",
  headers: { ...HEADERS, "Content-Type": "application/json" },
  body: JSON.stringify({
    "input": {
      "image": "https://example.com/input.jpg",
      "resolution": "720p",
      "duration": 5
    }
  }),
});
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);

Documentazione API

Kling 4.0 · Image to Video

Animate a first-frame image into a 3–30 second video with native stereo audio. An optional last frame and ordered middle frames guide the progression.

Inputs

  • image: required URL array containing exactly one first-frame image. Use JPG, JPEG or PNG.
  • prompt: optional string; may be omitted or empty.
  • last_image: optional URL array with at most one last-frame image.
  • keyframes: optional ordered image-URL array, at most 9 items; at most 8 when last_image is supplied.
  • resolution: "720p" (default) or "1080p".
  • duration: integer from 3 through 30, default 5.
  • aspect_ratio: optional "16:9", "9:16", "1:1" or "21:9". Omit to follow the first image; do not send "auto".

Limits and references

The first image, last image and keyframes together must not exceed 10 images. Middle frames are used in array order. Describe motion and sound in prompt; no separate sound toggle is exposed.

List price and initial credit charge

720p: $0.157 per output second. 1080p: $0.235 per output second.

Cost = output seconds × resolution rate. A 5-second clip costs $0.785 at 720p or $1.175 at 1080p.

1 USD = 100 Nami credits. Round the total charge upward to 0.01 credit: credits = ceil(cost_usd × 10000) / 100. These are list prices; no promotional discount is applied.

First, last and middle images do not add separate charges.

MaaS mapping

Nami image[0] → MaaS image string; last_image[0] → last_image string. keyframes remains a string array. Omit absent optional image fields. All other named fields retain their names in MaaS. Send duration as an integer and keep_original_sound as a boolean where supported. Array order is preserved.

Nami API

Send a POST request with Authorization: Bearer YOUR_NAMI_API_KEY and Content-Type: application/json to:

https://www.namifusion.com/api/v1/marketplace/run/kwaivgi/kling-v4.0/image-to-video

Example request body:

{
  "input": {
    "image": [
      "https://example.com/first-frame.jpg"
    ],
    "last_image": [
      "https://example.com/last-frame.jpg"
    ],
    "keyframes": [
      "https://example.com/middle-frame.jpg"
    ],
    "prompt": "The person slowly turns toward the window, then smiles. Smooth camera movement and quiet room ambience.",
    "resolution": "720p",
    "duration": 5
  }
}

Replace example.com URLs with publicly accessible media URLs. Use the returned task_uuid to poll GET https://www.namifusion.com/api/v1/marketplace/run/tasks/{task_uuid} with the same authorization. On success, read generated video URLs from output.videos.

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