Pixverse 5 Extend Serverless API

Seamlessly extend and continue AI-generated videos.

~92.04s
POST /v2/pixverse-5-extend · 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    "video_url": "https://segmind-resources.s3.amazonaws.com/input/a4f87ceb-6a9a-4861-8b9b-2c2f846090a7-33a2d4a1-c111-47c2-866e-2788a98bb055-15631ab4-3aaf-4e49-a433-c2c3b86f7938.mp4",
11    "duration": 5,
12    "prompt": "horse race",
13    "negative_prompt": "No sudden movements, no fast zooms.",
14    "quality": "540p",
15    "seed": 56698,
16    "motion_mode": "normal",
17}
18job = client.submit_async("pixverse-5-extend", **payload)
19print(job.request_id)                         # available immediately
20try:
21    result = job.wait(timeout=900, interval=2.0)
22    print(result["status"])                  # COMPLETED
23    print(result.get("output"))              # model output (e.g. video URL)
24except InferenceTimeout as e:
25    print("still running:", e.request_id)    # re-poll later with this id
26except InferenceFailed as e:
27    print("failed:", e.detail)
28
29# Fast models (<=600s) can use the one-liner instead:
30# result = segmind.run("pixverse-5-extend", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/pixverse-5-extend

Parameters

durationrequired
integer

Video duration in seconds (5 or 8; only 5 is allowed for fast mode or 1080p quality)

Default: 5
Allowed values :
58
motion_moderequired
string

Motion mode (normal, fast, --fast only available when duration=5; --quality=1080p does not support fast)

Default: "normal"
Allowed values :
"normal"
promptrequired
string

Prompt describing the animation

qualityrequired
string

Video quality (360p, 540p, 720p, 1080p)

Default: "540p"
Allowed values :
"360p""540p""720p""1080p"
negative_promptoptional
string

Negative prompt (unwanted effects)

Default: "No sudden movements, no fast zooms."
seedoptional
integer

Seed for random generation

Range: 1 - 999999
styleoptional
string

Style (only for model=v3.5): anime, 3d_animation, clay, comic, cyberpunk

Default: null
Allowed values :
"anime""3d_animation""clay""comic""cyberpunk"
video_urloptional
string (uri)

Provide the URL of the video to be relit. Use a URL from cloud storage like S3.

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/pixverse-5-extend

    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