MiniMax Hailuo H3 Reference to Video Serverless API

Keep characters and products consistent in 2K reference-to-video.

POST /v2/minimax-h3-reference-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    "reference_images": ["https://segmind-resources.s3.amazonaws.com/input/minimax-h3-reference-to-video-ref.jpg"],
11    "prompt": "The young woman with long auburn hair in the mustard-yellow trench coat walks confidently through a sunlit open-air European market, gently turning her head to glance at the colorful fruit and flower stalls, her hair swaying softly in the breeze, warm cinematic late-afternoon light, smooth steady tracking shot, shallow depth of field.",
12    "ratio": "16:9",
13    "duration": 6,
14    "resolution": "2K",
15}
16job = client.submit_async("minimax-h3-reference-to-video", **payload)
17print(job.request_id)                         # available immediately
18try:
19    result = job.wait(timeout=900, interval=2.0)
20    print(result["status"])                  # COMPLETED
21    print(result.get("output"))              # model output (e.g. video URL)
22except InferenceTimeout as e:
23    print("still running:", e.request_id)    # re-poll later with this id
24except InferenceFailed as e:
25    print("failed:", e.detail)
26
27# Fast models (<=600s) can use the one-liner instead:
28# result = segmind.run("minimax-h3-reference-to-video", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/minimax-h3-reference-to-video

Parameters

promptrequired
string

Describe the scene, subject and motion. Up to 7000 characters.

reference_imagesrequired
string[]

1-5 images pinning the subject's appearance. The prompt drives the action.

durationoptional
integer

Length of the generated video. Cost scales per second.

Default: 6Range: 4 - 15
ratiooptional
string

Output aspect ratio. 'adaptive' matches the reference images.

Default: "adaptive"
Allowed values :
"adaptive""21:9""16:9""4:3""1:1""3:4""9:16"
resolutionoptional
string

Output resolution. 2K is the only tier generally available.

Default: "2K"
Allowed values :
"2K"

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/minimax-h3-reference-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