Ray2 Flash Modify is a video generative model capable of restyling or retexturing the entire shot, from turning live-action into CG or stylized animation, to changing wardrobe, props, or the overall aesthetic and swap environments or time periods, giving you control over background, location, or even weather.

fal-ai/luma-dream-machine/ray-2-flash/modify

Inference

Commercial use

Partner

This endpoint will be deprecated on October 25, 2026. Migrate to Ray v3.2.

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fal-ai/luma-dream-machine/ray-2-flash/modify

Schema

LLMs

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fal-ai/luma-dream-machine/ray-2-flash/modify

Inference

Commercial use

Partner

This endpoint will be deprecated on October 25, 2026. Migrate to Ray v3.2.

1. Calling the API

2. Authentication

API Key

3. Queue

4. Files

5. Schema

About

Ray2 Flash Modify Video

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("fal-ai/luma-dream-machine/ray-2-flash/modify", {
  input: {
    video_url: "https://v3.fal.media/files/zebra/9aDde3Te2kuJYHdR0Kz8R_output.mp4"
  },
  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("fal-ai/luma-dream-machine/ray-2-flash/modify", {
  input: {
    video_url: "https://v3.fal.media/files/zebra/9aDde3Te2kuJYHdR0Kz8R_output.mp4"
  },
  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("fal-ai/luma-dream-machine/ray-2-flash/modify", {
  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("fal-ai/luma-dream-machine/ray-2-flash/modify", {
  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#

video_url string* required

URL of the input video to modify

image_url string

Optional URL of the first frame image for modification

prompt string

Instruction for modifying the video

mode ModeEnum

Amount of modification to apply to the video, adhere_1 is the least amount of modification, reimagine_3 is the most Default value: "flex_1"

Possible enum values: adhere_1, adhere_2, adhere_3, flex_1, flex_2, flex_3, reimagine_1, reimagine_2, reimagine_3

{
  "video_url": "https://v3.fal.media/files/zebra/9aDde3Te2kuJYHdR0Kz8R_output.mp4",
  "image_url": "https://fal.media/files/koala/Kv2821G03ggpKK2AiZX71_d5fa7bacf06049cfaeb9588f6003b6d5.jpg",
  "mode": "flex_1"
}

Output#

video File* required

URL of the modified video

{
  "video": {
    "url": "https://v3.fal.media/files/lion/_2UO2QC26T_R8vKeVGAdX_output.mp4"
  }
}

Other types#

File#

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.

Related Models

Loading API documentation…

fal-ai/luma-dream-machine/ray-2-flash/modify

This endpoint will be deprecated on October 25, 2026. Migrate to Ray v3.2.

fal-ai/luma-dream-machine/ray-2-flash/modify

This endpoint will be deprecated on October 25, 2026. Migrate to Ray v3.2.

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#

Related Models

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

File#

Related Models