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

Overview

Alongside the unified model APIs, we expose compatibility APIs that take each vendor's original parameters exactly as the vendor defines them — nothing renamed, nothing reshaped on the way through.

That makes them the shortest path onto Picsart if you already work with the vendor directly: the request bodies you've already written keep working as they are. You keep their parameter names and defaults, and you get the vendor's full parameter set rather than the subset that is shared across every model.

The cost is that a request is written for one vendor — switching models later means rewriting it, and results come back in the vendor's own shape. When you'd rather write once and change models freely, use the unified API.

Make a request

Call the workflow with ai.apis.run() in TypeScript, or hit /workflows/{workflow}/execute directly — params is passed through untouched either way.

These endpoints are addressed by workflow name rather than model id: the one in this model's header, since one model runs as one workflow. Authentication is unchanged — your Picsart API key as a bearer token (see Authentication).

import { createClient, ApiRunMode } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

// Calls the 'mirelo-ai/sfx2.0/video-to-audio' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('mirelo-ai/sfx2.0/video-to-audio', {
  video_url: "https://di3otfzjg1gxa.cloudfront.net/chase.mp4",
  text_prompt: "Distant police sirens, tires screeching on asphalt"
}, {
  mode: ApiRunMode.SYNC,
});

console.log(result); // workflow-specific output
console.log(usage?.credits); // amount charged, in $

Async (submit & poll)

This model can run longer than the sync limit (~20s). In TypeScript, ai.apis.run(…, { mode: ApiRunMode.ASYNC }) polls for you; over HTTP, submit and poll yourself.

import { createClient, ApiRunMode } from '@picsart/ai-sdk';

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.picsart.com',
});

// mode: ASYNC submits the job and polls under the hood — you just await.
const { result } = await ai.apis.run('mirelo-ai/sfx2.0/video-to-audio', {
  video_url: "https://di3otfzjg1gxa.cloudfront.net/chase.mp4",
  text_prompt: "Distant police sirens, tires screeching on asphalt"
}, {
  mode: ApiRunMode.ASYNC,
});

console.log(result);

Parameters

11 parameters, sent inside params. These are the vendor's own names, so they line up one-for-one with the vendor's documentation. Required ones must be supplied; the rest fall back to their defaults.

Parameter	Type	Required	Default	Details
`return_speech` Also return the input's separated speech as its own audio file, in the response's speech. With preserve_speech false the soundtracks are sound effects only and the speech is separated while they generate. With preserve_speech true it is the speech separated from the input that the soundtracks were generated around, not the speech in them: the model renders that speech anew, so the file does not cancel or double it cleanly when layered onto a soundtrack. The file is mono, in upload_audio_format, and as long as the soundtracks. It is not billed.	`boolean`	no	`false`	—
`video_url` Video to add sound to: an http(s) URL, or a base64 data URI up to 8 MB.	`string`	yes	`—`	e.g. `https://di3otfzjg1gxa.cloudfront.net/chase.mp4`
`num_samples` Number of variations to generate. Billed per sample.	`integer`	no	`2`	1–4
`upload_audio_bitrate_kbps` Bitrate in kbps for an mp3 or aac upload. mp3 is written at exactly this constant rate, one of 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320. aac takes 32 to 256 as a target the encoder may undershoot on mono or sparse audio. Unset keeps the default: mp3 at LAME V0 VBR, aac at a 256 kbps target. Refused with a lossless upload_audio_format.	`integer`	no	`—`	32–320
`duration` Seconds of sound to generate, from 1 s to 600 s, clamped to the video's length. Over 10 s generates in 10 s windows. A video shorter than 1 s answers 400.	`number`	no	`10`	1–600
`text_prompt` Optional text guiding the soundtrack. Name sounds the picture does not show, such as off-screen sounds or an ambience bed, to have them worked into it.	`string`	no	`—`	max 2000 chars e.g. `Distant police sirens, tires screeching on asphalt`
`negative_prompt` Sounds to keep out of the result, as a short comma-separated list.	`string`	no	`—`	max 1000 chars e.g. `music, crowd noise`
`preserve_speech` Keep the speech in the input's audio and generate the rest of the soundtrack around it. False generates sound effects only and suppresses speech.	`boolean`	no	`true`	—
`upload_audio_format` Audio format of each file	`string`	no	`wav`	`wavmp3aacflac`
`seed` Seed for generation. -1 or None for random.	`integer`	no	`—`	-1–18446744073709552000
`options` Platform-specific options for safety checks and Picsart Drive integration.	`object`	no	`—`	—
└`safety_checks` Safety check configuration.	`object`	no	`—`	—
└`enabled` Enable or disable text safety checks. Defaults to true.	`boolean`	no	`true`	—
└`drive` Picsart Drive storage options. When provided, the result will be saved to the user's Drive.	`object`	no	`—`	—
└`name` Filename to save the result as in Picsart Drive.	`string`	yes	`—`	—
└`attributes` Additional file metadata attributes.	`object`	no	`—`	—
└`folder` Destination folder in Picsart Drive.	`object`	no	`—`	—

Response

Over HTTP the output arrives inside a status envelope, at response.result. ai.apis.run() unwraps that envelope for you and resolves to { result, usage } instead. Either way the result itself is the vendor's own shape.

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