Infinitalk | Video to Video

fal-ai/infinitalk/video-to-video

Infinitalk model generates a talking avatar video from an image and audio file. The avatar lip-syncs to the provided audio with natural facial expressions.

Inference

Commercial use

Schema

LLMs

Playground API

About

MultiTalk model generates a talking avatar video from an image and audio file. The avatar lip-syncs to the provided audio with natural facial expressions.

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. Please check the migration guide for more information.

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/infinitalk/video-to-video", {
  input: {
    video_url: "https://storage.googleapis.com/falserverless/model_tests/video_models/ref_video.mp4",
    audio_url: "https://v3.fal.media/files/penguin/PtiCYda53E9Dav25QmQYI_output.mp3",
    prompt: "A woman with colorful hair talking on a podcast."
  },
  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"
});

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/infinitalk/video-to-video", {
  input: {
    video_url: "https://storage.googleapis.com/falserverless/model_tests/video_models/ref_video.mp4",
    audio_url: "https://v3.fal.media/files/penguin/PtiCYda53E9Dav25QmQYI_output.mp3",
    prompt: "A woman with colorful hair talking on a podcast."
  },
  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/infinitalk/video-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/infinitalk/video-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);

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.

audio_url string* required

The URL of the audio file.

prompt string* required

The text prompt to guide video generation.

num_frames integer

Number of frames to generate. Must be between 81 to 129 (inclusive). If the number of frames is greater than 81, the video will be generated with 1.25x more billing units. Default value: 145

resolution ResolutionEnum

Resolution of the video to generate. Must be either 480p or 720p. Default value: "480p"

Possible enum values: 480p, 720p

seed integer

Random seed for reproducibility. If None, a random seed is chosen. Default value: 42

acceleration AccelerationEnum

The acceleration level to use for generation. Default value: "regular"

Possible enum values: none, regular, high

{
  "video_url": "https://storage.googleapis.com/falserverless/model_tests/video_models/ref_video.mp4",
  "audio_url": "https://v3.fal.media/files/penguin/PtiCYda53E9Dav25QmQYI_output.mp3",
  "prompt": "A woman with colorful hair talking on a podcast.",
  "num_frames": 145,
  "resolution": "480p",
  "seed": 42,
  "acceleration": "regular"
}

Output#

video File* required

The generated video file.

seed integer* required

The seed used for generation.

{
  "video": {
    "url": "https://storage.googleapis.com/falserverless/model_tests/video_models/mk7Ar5IvTtyNjWLRMb-re_dbe605004b664258b38528615afd7e0f.mp4"
  }
}

Other types#

InfiniTalkSingleTextRequest#

image_url string* required

URL of the input image. If the input image does not match the chosen aspect ratio, it is resized and center cropped.

text_input string* required

The text input to guide video generation.

voice VoiceEnum* required

The voice to use for speech generation

Possible enum values: Aria, Roger, Sarah, Laura, Charlie, George, Callum, River, Liam, Charlotte, Alice, Matilda, Will, Jessica, Eric, Chris, Brian, Daniel, Lily, Bill

prompt string* required

The text prompt to guide video generation.

num_frames integer

Number of frames to generate. Must be between 41 to 721. Default value: 145

resolution ResolutionEnum

Resolution of the video to generate. Must be either 480p or 720p. Default value: "480p"

Possible enum values: 480p, 720p

seed integer

Random seed for reproducibility. If None, a random seed is chosen. Default value: 42

acceleration AccelerationEnum

The acceleration level to use for generation. Default value: "regular"

Possible enum values: none, regular, high

InfiniTalkSingleAudioRequest#

image_url string* required

URL of the input image. If the input image does not match the chosen aspect ratio, it is resized and center cropped.

audio_url string* required

The URL of the audio file.

prompt string* required

The text prompt to guide video generation.

num_frames integer

Number of frames to generate. Must be between 41 to 721. Default value: 145

resolution ResolutionEnum

Resolution of the video to generate. Must be either 480p or 720p. Default value: "480p"

Possible enum values: 480p, 720p

seed integer

Random seed for reproducibility. If None, a random seed is chosen. Default value: 42

acceleration AccelerationEnum

The acceleration level to use for generation. Default value: "regular"

Possible enum values: none, regular, high

AvatarSingleAudioResponse#

video File* required

The generated video file.

seed integer* required

The seed used for generation.

AvatarSingleTextResponse#

video File* required

The generated video file.

seed integer* required

The seed used for generation.

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

Infinitalk Video to Video

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#

InfiniTalkSingleTextRequest#

InfiniTalkSingleAudioRequest#

AvatarSingleAudioResponse#

AvatarSingleTextResponse#

File#