Sonilo Video to Video Serverless API

Add frame-synced AI music and sound effects to video.

POST /v2/sonilo-video-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    "video_url": "https://segmind-resources.s3.amazonaws.com/input/sonilo-video-to-video-input.mp4",
11    "sound_type": "music_and_sfx",
12    "music_prompt": "cinematic ambient orchestral score, gentle swelling strings, ethereal and uplifting, evoking the vastness of the ocean at golden sunset",
13    "sfx_prompt": "ocean waves crashing on rocks, sea spray, distant seabirds calling, coastal wind",
14    "preserve_speech": False,
15    "ducking": True,
16    "sfx_segments": [],
17}
18job = client.submit_async("sonilo-video-to-video", **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("sonilo-video-to-video", **payload)

API Endpoint

POSThttps://api.segmind.com/v1/sonilo-video-to-video

Parameters

video_urlrequired
string (uri)

Public HTTP(S) URL of the source video.

duckingoptional
boolean

Lower the music under speech. Music + SFX mode only.

Default: true
music_promptoptional
string

Guides the generated music. Used when sound_type is music or music_and_sfx.

preserve_speechoptional
boolean

Keep speech from the source video. Music modes only.

Default: false
sfx_promptoptional
string

Guides the generated sound effects. Used when sound_type is sfx or music_and_sfx.

sfx_segmentsoptional
object[]

Contiguous timed SFX prompts (sfx or music_and_sfx). First must start at 0.

Array items:
startrequired
number
endrequired
number
promptrequired
string
Max length: 200
sound_typeoptional
string

Which soundtrack to generate.

Default: "music"
Allowed values :
Music"music"
Sound Effects"sfx"
Music + Sound Effects"music_and_sfx"

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/sonilo-video-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