Luma Modify Video API

Transform videos seamlessly with high-fidelity generative edits while preserving original actor performances.

PlaygroundAPI
Pricing
~214.46s
POST /v2/modify-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    "video_url": "https://segmind-resources.s3.amazonaws.com/input/c08771b9-b671-4c12-9ea7-af4048b9d194-894a8bdf-6064-40ea-a78d-06c1abff262b.mp4",
11    "first_frame_url": "https://segmind-resources.s3.amazonaws.com/input/f2220449-e53a-40d5-aba7-e12c6f562ab5-modify-video-ip.png",
12    "prompt": "woman in a yarn doll style",
13    "mode": "adhere_1",
14}
15job = client.submit_async("modify-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("modify-video", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/modify-video

Parameters

first_frame_urloptional
string (uri)

An optional URL of the first frame of the video. This should be a modified version of the original first frame, it will be used to guide the video modification.

modeoptional
string

How closely the output should follow the source video. Adhere: very close, for subtle enhancements. Flex: allows more stylistic change while keeping recognizable elements. Reimagine: loosely follows the source, for dramatic or transformative changes.

Default: "adhere_1"
Allowed values :
"adhere_1""adhere_2""adhere_3""flex_1""flex_2""flex_3""reimagine_1""reimagine_2""reimagine_3"
promptoptional
string

Guides video modification.

video_urloptional
string (uri)

The source video URL. Use short MP4s under 30 seconds. Maximum video size is 100mb.

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/modify-video

    Submit — returns request_id, status_url, response_url

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

    Poll — until COMPLETED or FAILED

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

    Result — final response body

Status states

QUEUED— Accepted, waiting for a worker
PROCESSING— Running on a worker
COMPLETED— Done — result body is ready
FAILED— Errored (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