LTXLTX 2.3 OutpaintVideo → Video

Expand a video past its original frame — the source stays put inside a wider canvas and the surrounding region is generated to match.

Video InputOutpaintAudioUp to 1080p

Playground SDK API Advanced Usage Pricing

Install the SDK

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

npm install @picsart/ai-sdk

Authenticate

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

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

const ai = createClient({
  apiKey: process.env.PICSART_API_KEY, // sent as: Authorization: Bearer <key>
  apiUrl: 'https://api.picsart.com',
});

Run the model

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

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

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

const result = await ai.generate('ltx-v2.3-outpaint', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  videoUrl: "https://cdn.example.com/input.mp4",
  aspectRatio: "21:9",
  resolution: "720p",
  duration: 6
});

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

Parameters

17 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`	yes	`—`	max 5000 chars
`videoUrl` Source Video	`file (video)`	yes	`—`	—
`negativePrompt` Negative Prompt	`text`	no	`—`	—
`aspectRatio`	`enum`	no	`21:9`	21:9, 16:9, 4:3, 1:1, 3:4, 9:16, 9:21
`resolution`	`enum`	no	`720p`	480p, 720p, 1080p
`duration`	`enum`	no	`6`	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
`fps` FPS	`range`	no	`24`	1–60 (step 1)
`sourceScale` Source Scale	`range`	no	`1`	0.25–1 (step 0.05)
`videoStrength` Source Strength	`range`	no	`1`	0–1 (step 0.05)
`cfgScale` CFG Scale	`range`	no	`1`	1–20
`numInferenceSteps` Inference Steps	`range`	no	`15`	8–30
`videoQuality` Video Quality	`enum`	no	`high`	low, medium, high, maximum
`videoWriteMode` Write Mode	`enum`	no	`balanced`	fast, balanced, small
`enhancePrompt`	`boolean`	no	`true`	—
`generateAudio`	`boolean`	no	`true`	—
`enableSafetyChecker` Safety Checker	`boolean`	no	`true`	—
`seed` Seed	`range`	no	`—`	0–2147483647 (step 1)

Output

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

Result

{
  "items": [
    {
      "url": "https://cdn.picsart.com/…/result"
    }
  ],
  "model": "ltx-v2.3-outpaint"
}