LTX 2.3 Audio-to-Video

LTX · Video · Audio → Video

Generate video driven by an audio track — 2-20s, optional image for first frame.

Model ID: ltx-2.3-a2vWorkflow: ltx-2.3/audio-to-video

Audio InputImage Input2–20 sec

Try on Playground ↗

SDK API Advanced Usage Pricing

Install the SDK

The SDK targets Node 20+ and ships with TypeScript types.

npm

npm install @picsart/ai-sdk

Authenticate

Create a client once with your API key — it's sent as a bearer token on every request.

TypeScript

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

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY, // sent as: Authorization: Bearer <key>
  apiUrl: 'https://api.green-salad-4efd.toolsminati.workers.dev',
});

Run the model

Call the model with its parameters. This example uses the required ones.

TypeScript

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

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY,
  apiUrl: 'https://api.green-salad-4efd.toolsminati.workers.dev',
});

const result = await ai.generate('ltx-2.3-a2v', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  audioUrl: "https://cdn.example.com/input.mp3",
  aspectRatio: "auto"
});

console.log(result.url); // video URL

Parameters

5 parameters. Required ones must be supplied; the rest fall back to their defaults. The API takes these same names over HTTP.

Parameter	Type	Required	Default	Details
`prompt` Prompt	`text`	no	`—`	max 5000 chars
`audioUrl` Audio Track	`file (audio)`	yes	`—`	—
`imageUrls` First Frame Image	`file (image[])`	no	`—`	—
`aspectRatio`	`enum`	no	`auto`	auto, 16:9, 9:16
`cfgScale` CFG Scale	`range`	no	`—`	1–50 (step 1)

Output

generate() resolves once the job completes. A video URL.

Result

{
  "items": [
    {
      "url": "https://cdn.green-salad-4efd.toolsminati.workers.dev/…/result"
    }
  ],
  "model": "ltx-2.3-a2v"
}