Kling V2.6 (pro) Image to Video API.
The Kling V2.6 model is the latest generation of image-to-video with
improved visual quality and motion consistency. This version also
supports native audio generation when the generate_audio parameter is enabled.
The client provides a convenient way to interact with the model API.
npm install --save @fal-ai/clientThe @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.
Set FAL_KEY as an environment variable in your runtime.
export FAL_KEY="YOUR_API_KEY"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/kling-video/v2.6/pro/image-to-video", {
input: {
prompt: "A king walks slowly and says \"My people, here I am! I am here to save you all\"",
start_image_url: "https://v3b.fal.media/files/b/0a84ab29/BSJXz9Ht-jgRgMf4IGxLU_upscaled.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);The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.
import { fal } from "@fal-ai/client";
fal.config({
credentials: "YOUR_FAL_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.
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/kling-video/v2.6/pro/image-to-video", {
input: {
prompt: "A king walks slowly and says \"My people, here I am! I am here to save you all\"",
start_image_url: "https://v3b.fal.media/files/b/0a84ab29/BSJXz9Ht-jgRgMf4IGxLU_upscaled.png"
},
webhookUrl: "https://optional.webhook.url/for/results",
});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/kling-video/v2.6/pro/image-to-video", {
requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
logs: true,
});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/kling-video/v2.6/pro/image-to-video", {
requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);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.
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.
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.
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);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.
enable_safety_checker booleanDisabling safety checks requires account authorization; unauthorized requests are always checked. Default value: true
prompt string* requiredstart_image_url string* requiredURL of the image to be used for the video
duration DurationEnumThe duration of the generated video in seconds Default value: "5"
Possible enum values: 5, 10
negative_prompt stringDefault value: "blur, distort, and low quality"
generate_audio booleanWhether to generate native audio for the video. Supports Chinese and English voice output. Other languages are automatically translated to English. For English speech, use lowercase letters; for acronyms or proper nouns, use uppercase. Default value: true
Optional Voice IDs for video generation. Reference voices in your prompt with <<<voice_1>>> and <<<voice_2>>> (maximum 2 voices per task). Get voice IDs from the kling video create-voice endpoint: https://fal.ai/models/fal-ai/kling-video/create-voice
end_image_url stringURL of the image to be used for the end of the video
{
"enable_safety_checker": true,
"prompt": "A king walks slowly and says \"My people, here I am! I am here to save you all\"",
"start_image_url": "https://v3b.fal.media/files/b/0a84ab29/BSJXz9Ht-jgRgMf4IGxLU_upscaled.png",
"duration": "5",
"negative_prompt": "blur, distort, and low quality",
"generate_audio": true
}The generated video
{
"video": {
"file_name": "output.mp4",
"url": "https://v3b.fal.media/files/b/0a84ab51/Qr1twf8UgtD5rZHpNXC2P_output.mp4",
"content_type": "video/mp4",
"file_size": 11814817
}
}url string* requiredThe URL where the file can be downloaded from.
content_type stringThe mime type of the file.
file_name stringThe name of the file. It will be auto-generated if not provided.
file_size integerThe size of the file in bytes.