Topaz Image to Image
About
Upscale Image
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/topaz/upscale/image", {
input: {
image_url: "https://storage.googleapis.com/falserverless/model_tests/codeformer/codeformer_poor_1.jpeg"
},
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#
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#
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/topaz/upscale/image", {
input: {
image_url: "https://storage.googleapis.com/falserverless/model_tests/codeformer/codeformer_poor_1.jpeg"
},
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/topaz/upscale/image", {
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/topaz/upscale/image", {
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#
model
 ModelEnum
Model to use for image enhancement. Default value: "Standard V2"
Possible enum values: Low Resolution V2, Standard V2, CGI, High Fidelity V2, Text Refine, Recovery, Redefine, Recovery V2
upscale_factor
 float
Factor to upscale the video by (e.g. 2.0 doubles width and height) Default value: 2
crop_to_fill
 boolean
image_url
 string
* requiredUrl of the image to be upscaled
output_format
 OutputFormatEnum
Output format of the upscaled image. Default value: "jpeg"
Possible enum values: jpeg, png
subject_detection
 SubjectDetectionEnum
Subject detection mode for the image enhancement. Default value: "All"
Possible enum values: All, Foreground, Background
face_enhancement
 boolean
Whether to apply face enhancement to the image. Default value: true
face_enhancement_creativity
 float
Creativity level for face enhancement. 0.0 means no creativity, 1.0 means maximum creativity. Ignored if face ehnancement is disabled.
face_enhancement_strength
 float
Strength of the face enhancement. 0.0 means no enhancement, 1.0 means maximum enhancement. Ignored if face ehnancement is disabled. Default value: 0.8
{
"model": "Standard V2",
"upscale_factor": 2,
"image_url": "https://storage.googleapis.com/falserverless/model_tests/codeformer/codeformer_poor_1.jpeg",
"output_format": "jpeg",
"subject_detection": "All",
"face_enhancement": true,
"face_enhancement_strength": 0.8
}
Output#
The upscaled image.
{
"image": {
"url": "",
"content_type": "image/png",
"file_name": "z9RV14K95DvU.png",
"file_size": 4404019
}
}
Other types#
SlowMotionRequest#
video_url
 string
* requiredURL of the video to apply slow motion to
slowdown_factor
 integer
Factor to slow down the video by (e.g. 4 means 4x slower) Default value: 4
upscale_factor
 float
Optional factor to upscale the video by (e.g. 2.0 doubles width and height)
StrongAIUpscaleRequest#
video_url
 string
* requiredURL of the AI-generated video to upscale
target_width
 integer
Target width of the output video Default value: 5120
target_height
 integer
Target height of the output video Default value: 2880
target_fps
 integer
Target FPS for the output video. Defaults to source FPS if not specified.
VideoUpscaleRequest#
video_url
 string
* requiredURL of the video to upscale
upscale_factor
 float
Factor to upscale the video by (e.g. 2.0 doubles width and height) Default value: 2
target_fps
 integer
Target FPS for frame interpolation. If set, frame interpolation will be enabled.
H264_output
 boolean
Whether to use H264 codec for output video. Default is H265.
RecoverUpscaleRequest#
video_url
 string
* requiredURL of the low-quality video to upscale and recover
upscale_factor
 float
Factor to upscale the video by (e.g. 2.0 doubles width and height) Default value: 2
target_fps
 integer
Target FPS for the output video. Defaults to source FPS if not specified.
File#
url
 string
* requiredThe 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