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minimax/h3-max/reframe-video
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minimax/h3-max/reframe-video
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Table of contents

Expands existing videos to a selected aspect ratio with generative outpainting, preserving source audio and timing. Supports optional text guidance and 480p or 768p output.
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minimax/h3-max/reframe-video

Expands existing videos to a selected aspect ratio with generative outpainting, preserving source audio and timing. Supports optional text guidance and 480p or 768p output.
Inference
Commercial use
Schema
LLMs
PlaygroundAPIExamples
Loading API documentation

Table of contents

Table of contents

1. Calling the API

  • Install the client
  • Setup your API Key
  • Submit a request

2. Authentication

  • API Key

3. Queue

  • Submit a request
  • Fetch request status
  • Get the result

4. Files

  • Data URI (base64)
  • Hosted files (URL)
  • Uploading files

5. Schema

  • Input
  • Output
  • Other

About

Contain-fit the source onto the target canvas and outpaint the rest.

Sources within the plain outpaint budget (15 s, MAX_SOURCE_BYTES) run that path; longer or larger sources (up to 300 s) are re-encoded into checkpointed outpaint windows.

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client
Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("minimax/h3-max/reframe-video", {
  input: {
    video_url: ""
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In an environment where you cannot set environment variables, you can configure the API key manually on the client.
import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});
Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("minimax/h3-max/reframe-video", {
  input: {
    video_url: ""
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("minimax/h3-max/reframe-video", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("minimax/h3-max/reframe-video", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);
Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string

Optional guidance for the new surroundings. Expansion captions the source automatically. Default value: ""

video_url string* required

Source video, 0.25 to 300 seconds; fitted onto the target canvas with its timeline and audio preserved.

aspect_ratio AspectRatioEnum

Target canvas aspect ratio; the source is contain-fitted and the rest is outpainted. Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21

resolution ResolutionEnum

Target canvas resolution profile. 1080p uses learned latent upscaling from a native 768p reframe. Default value: "768p"

Possible enum values: 480p, 768p, 1080p

seed integer
enable_safety_checker boolean

Default value: true

{
  "video_url": "",
  "aspect_ratio": "16:9",
  "resolution": "768p",
  "enable_safety_checker": true
}

Output#

video VideoFile* required
seed integer* required
placement Placement* required
frame_count integer* required
frames_per_second integer

Default value: 24

expanded_prompt string
{
  "video": {
    "url": "",
    "content_type": "image/png",
    "file_name": "z9RV14K95DvU.png",
    "file_size": 4404019
  },
  "frames_per_second": 24
}

Other types#

VideoFile#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.

width integer

The width of the video

height integer

The height of the video

fps float

The FPS of the video

duration float

The duration of the video

num_frames integer

The number of frames in the video

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