Kling 2.1 Standard is a cost-efficient endpoint for the Kling 2.1 model, delivering high-quality image-to-video generation
The client provides a convenient way to interact with the model API.
npm install --save @fal-ai/clientSet 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/v2.1/standard/image-to-video", {
input: {
prompt: "As the sun dips below the horizon, painting the sky in fiery hues of orange and purple, powerful waves relentlessly crash against jagged, dark rocks, their white foam a stark contrast to the deepening twilight; the textured surface of the rocks, wet and glistening, reflects the vibrant colors, creating a mesmerizing spectacle of nature's raw power and breathtaking beauty",
image_url: "https://storage.googleapis.com/falserverless/model_tests/kling/kling-image-to-video.jpg"
},
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"
});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/v2.1/standard/image-to-video", {
input: {
prompt: "As the sun dips below the horizon, painting the sky in fiery hues of orange and purple, powerful waves relentlessly crash against jagged, dark rocks, their white foam a stark contrast to the deepening twilight; the textured surface of the rocks, wet and glistening, reflects the vibrant colors, creating a mesmerizing spectacle of nature's raw power and breathtaking beauty",
image_url: "https://storage.googleapis.com/falserverless/model_tests/kling/kling-image-to-video.jpg"
},
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/v2.1/standard/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/v2.1/standard/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);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* requiredimage_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"
cfg_scale floatThe CFG (Classifier Free Guidance) scale is a measure of how close you want
the model to stick to your prompt. Default value: 0.5
{
"enable_safety_checker": true,
"prompt": "As the sun dips below the horizon, painting the sky in fiery hues of orange and purple, powerful waves relentlessly crash against jagged, dark rocks, their white foam a stark contrast to the deepening twilight; the textured surface of the rocks, wet and glistening, reflects the vibrant colors, creating a mesmerizing spectacle of nature's raw power and breathtaking beauty",
"image_url": "https://storage.googleapis.com/falserverless/model_tests/kling/kling-image-to-video.jpg",
"duration": "5",
"negative_prompt": "blur, distort, and low quality",
"cfg_scale": 0.5
}The generated video
{
"video": {
"url": "https://v3.fal.media/files/koala/17e3xh08J4_PkHS_0cbwF_output.mp4"
}
}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.