MiniMax H3 Max Extend

MiniMax · Video · Video → Video

Continue an existing video with newly generated footage — describe what happens next and get 5-15 more seconds, either appended to the source or on its own. Up to 2K.

Model ID: minimax-h3-max-extendWorkflow: minimax/h3-max/extend-video

Video InputExtend2K5-15 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.picsart.com',
});

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.picsart.com',
});

const result = await ai.generate('minimax-h3-max-extend', {
  prompt: "A serene mountain lake at golden hour, ultra detailed",
  videoUrl: "https://cdn.example.com/input.mp4",
  duration: 5,
  aspectRatio: "auto",
  resolution: "768p"
});

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

Parameters

9 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	`—`	e.g. "What happens next"
`videoUrl` Source Video	`file (video)`	yes	`—`	max 60s
`duration`	`range`	no	`5`	5–15 (step 1)
`output` Output	`enum`	no	`extended`	extended, continuation
`aspectRatio`	`enum`	no	`auto`	auto, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16
`resolution`	`enum`	no	`768p`	480p, 768p, 1080p, 2k
`enhancePrompt`	`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": "minimax-h3-max-extend"
}