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Veo 3.1 Image to Video

fal-ai/veo3.1/reference-to-video
Generate Videos from images using Google's Veo 3.1
Inference
Commercial use
Partner
Schema
LLMs
PlaygroundAPI

About

Generate videos from reference image(s) and text using Google's Veo 3.1 model.

The prompt should describe how to animate between the first and last frame. Include:

  • Action: How the first and last frame should be animated
  • Style: Desired animation style
  • Camera motion (optional): How camera should move
  • Ambiance (optional): Desired mood and atmosphere

More details are available in our prompting guide.

The model supports:

  • Input images up to 8MB in size
  • 720p or 1080p output resolution
  • Natural motion and realistic animations
  • Control over animation via text prompts

Safety filters are applied to both input images and generated content.

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

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/veo3.1/reference-to-video", {
  input: {
    prompt: "A chimpanzee wearing overalls frolics in the grassy field, gently playing with the butterflies. In the background, a circus tent and carousel beckon.",
    image_urls: ["https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-1.png", "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-2.png", "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-3.png"]
  },
  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 case your app is running in an environment where you cannot set environment variables, you can set the API Key manually as a client configuration.
import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

3. Queue#

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/veo3.1/reference-to-video", {
  input: {
    prompt: "A chimpanzee wearing overalls frolics in the grassy field, gently playing with the butterflies. In the background, a circus tent and carousel beckon.",
    image_urls: ["https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-1.png", "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-2.png", "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-3.png"]
  },
  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/veo3.1/reference-to-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("fal-ai/veo3.1/reference-to-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);

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

The text prompt describing the video you want to generate

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video. Default value: "16:9"

Possible enum values: 16:9, 9:16

duration DurationEnum

The duration of the generated video. Default value: "8s"

Possible enum values: 8s

negative_prompt string

A negative prompt to guide the video generation.

resolution ResolutionEnum

The resolution of the generated video. Default value: "720p"

Possible enum values: 720p, 1080p

generate_audio boolean

Whether to generate audio for the video. Default value: true

seed integer

The seed for the random number generator.

auto_fix boolean

Whether to automatically attempt to fix prompts that fail content policy or other validation checks by rewriting them.

image_urls list<string>* required

URLs of the reference images to use for consistent subject appearance

{
  "prompt": "A chimpanzee wearing overalls frolics in the grassy field, gently playing with the butterflies. In the background, a circus tent and carousel beckon.",
  "aspect_ratio": "16:9",
  "duration": "8s",
  "resolution": "720p",
  "generate_audio": true,
  "image_urls": [
    "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-1.png",
    "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-2.png",
    "https://storage.googleapis.com/falserverless/example_inputs/veo31-r2v-input-3.png"
  ]
}

Output#

video File* required

The generated video.

{
  "video": {
    "url": "https://storage.googleapis.com/falserverless/example_outputs/veo31-r2v-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.

file_data string

File data

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