Kling O1 Reference Image 2 Video Serverless API

Identity-preserving videos from static images with character reference.

~194.08s
POST /v2/kling-o1-reference-image-to-video · submit + poll
 1# pip install "segmind>=1.1.0"
 2# export SEGMIND_API_KEY="YOUR_API_KEY"
 3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
 4
 5# Async (v2) — recommended for long-running / video models.
 6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
 7# deadline and keeps the request_id so you can re-poll later.
 8client = SegmindClient()                      # reads SEGMIND_API_KEY
 9payload = {
10    "prompt": "Create a cinematic video sequence with smooth camera movements of @image1 riding on @image2",
11    "image_urls": ["https://segmind-resources.s3.amazonaws.com/output/01641ffc-a5dc-4383-a978-8d14f785247d-Screenshot_2025-11-24_120343.png", "https://segmind-resources.s3.amazonaws.com/output/5aab39a0-7dbb-42c3-9269-bf52141ae0ca-horse.jpg"],
12    "duration": "5",
13    "aspect_ratio": "16:9",
14}
15job = client.submit_async("kling-o1-reference-image-to-video", **payload)
16print(job.request_id)                         # available immediately
17try:
18    result = job.wait(timeout=900, interval=2.0)
19    print(result["status"])                  # COMPLETED
20    print(result.get("output"))              # model output (e.g. video URL)
21except InferenceTimeout as e:
22    print("still running:", e.request_id)    # re-poll later with this id
23except InferenceFailed as e:
24    print("failed:", e.detail)
25
26# Fast models (<=600s) can use the one-liner instead:
27# result = segmind.run("kling-o1-reference-image-to-video", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/kling-o1-reference-image-to-video

Parameters

image_urlsrequired
string[]

List of reference image URLs. Reference them as @Image1, @Image2 in prompt

promptrequired
string

Scene description. Use @Image1 for images, @Element1 for elements.

aspect_ratiooptional
string

Sets frame dimensions

Default: "16:9"
Allowed values :
"16:9""9:16""1:1"
durationoptional
integer

Video duration in seconds

Default: 5
Allowed values :
510
elementsoptional
string

Elements with frontal and reference images. Reference as @Element1.

Default: null

Response Type

Returns: Video

Asynchronous requests (v2)

Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.

  1. 1
    POST /v2/kling-o1-reference-image-to-video

    Submitreturns request_id, status_url, response_url

  2. 2
    GET /v2/requests/{id}/status

    Polluntil COMPLETED or FAILED

  3. 3
    GET /v2/requests/{id}

    Resultfinal response body

Status states

QUEUEDAccepted, waiting for a worker
PROCESSINGRunning on a worker
COMPLETEDDone — result body is ready
FAILEDErrored (incl. content/RAI blocks)
  • A FAILED request is served as HTTP 422 — the body still carries the error detail.
  • An unknown or expired request_id returns HTTP 404.
  • Results are retained for 1 hour, then expire.
  • Content / RAI blocks surface as FAILED, not a separate state.
  • Track completion by polling the status endpoint.

Common Error Codes

The API returns standard HTTP status codes. Detailed error messages are provided in the response body.

400

Bad Request

Invalid parameters or request format

401

Unauthorized

Missing or invalid API key

403

Forbidden

Insufficient permissions

404

Not Found

Model or endpoint not found

406

Insufficient Credits

Not enough credits to process request

429

Rate Limited

Too many requests

500

Server Error

Internal server error

502

Bad Gateway

Service temporarily unavailable

504

Timeout

Request timed out