Input types: Text, VideoOutput: Audio

MireloMirelo SFX 2.0 (Video to Audio)

Generate a soundtrack synced to your video with Mirelo SFX 2.0 — returns the audio track.

Video to AudioVideo RequiredSound Effects

Use it in code

Use it with AI

Playground SDK API Advanced Usage Pricing

Authentication

Send your Picsart API key as a bearer token on every request.

Header

Authorization: Bearer <PICSART_API_KEY>

Make a request

One endpoint serves every model: POST to /workflows/v1/models/execute with the model id and its input in the body. The nesting is deliberate — the outer params is the envelope every workflow takes, and the inner one is this model's own input. Those inner names are the same unified ones the SDK takes, so a call translates one-to-one between the two — no per-vendor naming to learn.

cURL

curl -X POST 'https://api.picsart.com/workflows/v1/models/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "mirelo-sfx-2.0-video-to-audio",
    "params": {
      "videoUrl": "https://cdn.example.com/input.mp4",
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "duration": 10
    }
  }
}'

Async (submit & poll)

This model can run longer than the sync limit (~20s), so send it to /workflows/v1/models/submit, which returns a task id, and poll /workflows/v1/models/{taskId}/result until response.status is COMPLETED or FAILED.

cURL

# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/v1/models/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "mirelo-sfx-2.0-video-to-audio",
    "params": {
      "videoUrl": "https://cdn.example.com/input.mp4",
      "prompt": "A serene mountain lake at golden hour, ultra detailed",
      "duration": 10
    }
  }
}'
# → { "status": "success", "response": { "id": "task_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/v1/models/task_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'

Result body

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "mirelo-sfx-2.0-video-to-audio"
    }
  }
}

Parameters

9 parameters, sent inside the inner params object. Identical to the SDK's — one parameter set, whichever transport you use.

Parameter	Type	Required	Default	Details
`videoUrl` Source Video	`file (video)`	yes	`—`	—
`prompt` Prompt	`text`	no	`—`	max 2000 chars
`negativePrompt` Negative Prompt	`text`	no	`—`	max 1000 chars
`preserveSpeech` Preserve Speech	`boolean`	no	`true`	—
`duration`	`range`	no	`10`	1–600 (step 1)
`count`	`enum`	no	`2`	1, 2, 3, 4
`format` Format	`enum`	no	`wav`	wav, mp3, aac, flac
`bitrateKbps` Audio Bitrate (kbps)	`range`	no	`—`	32–320 (step 1)
`seed` Seed	`range`	no	`—`	0–2147483647 (step 1)

Response

The body arrives in the gateway's status envelope, so the output is at response.result — alongside the task id, its status and the amount charged. Asset models return url plus an items array; text models return text instead.

Response body