We are a Swiss Army knife for your files
Transloadit is a service for companies with developers. We handle their file uploads and media processing. This means that they can save on development time and the heavy machinery that is required to handle big volumes in an automated way.
We pioneered with this concept in 2009 and have made our customers happy ever since. We are still actively improving our service in 2026, as well as our open source projects uppy.io and tus.io, which are changing how the world does file uploading.
Encode blur-out effect into video file
You can encode some spectacular effects in your video files using
🤖/video/encode. In particular, using our ffmpeg parameter, you can
add special effects outside the bounds of our traditional API options. By doing so, we're going to
show how you can create a blur-out fade effect.
First, let's encode our video with our ipad-high preset. This will bring numerous encoding
properties to our video file such as bitrates and codecs used. For the full list of properties
brought over by our presets, please check out our Preset documentation.
Because using presets brings over a series of properties, which work in part with FFmpeg, if you
attempt to add FFmpeg's filter_complex filter, your
assembly will result in an error due to conflicting filters. To bypass this, we simply pass our
first step to a second step, with a preset value of "empty".
Now with all that out of the way, we can look at how our desired effect is achieved. The general
idea is that we use filter_complex's ability to take multiple effects and pipe them into one
another. Using this premise, we will need to use the split filter to break our input video into
two layers, base, and blurred. We create our stream with a blurred effect using the boxblur filter
which gives three ways to tune our blurred stream: luma - controls brightness, chroma - controls
color, and alpha - controls transparency. Then we add in our fade effect, using the overlay
filter to layer the two effects on top of each other as the blurred effect is being faded in.
We hope this has been a good showcase of just how powerful FFmpeg can be in upping your encoding game. Happy Transcoding!
Step 1:
Handle uploads
We can handle uploads of your users directly.Learn more
":original": {
"robot": "/upload/handle"
}Step 2:
Transcode, resize, or watermark videos
We offer a variety of video encoding features like optimizing for different devices, merging, injecting ads, changing audio tracks, or adding company logos.Learn more
"encode": {
"use": ":original",
"robot": "/video/encode",
"result": true,
"ffmpeg_stack": "v7",
"preset": "ipad-high",
"turbo": true
}Step 3:
Transcode, resize, or watermark videos
We offer a variety of video encoding features like optimizing for different devices, merging, injecting ads, changing audio tracks, or adding company logos.Learn more
"blur-fade": {
"use": "encode",
"robot": "/video/encode",
"result": true,
"ffmpeg": {
"filter_complex": "[0:v]split=2[base][blurred], [blurred]boxblur=luma_radius=50:chroma_radius=25:luma_power=1[blurred], [blurred]fade=type=in:start_time=3:duration=2:alpha=1[blurred-with-fadein], [base][blurred-with-fadein]overlay[blurout]",
"map": "[blurout]"
},
"ffmpeg_stack": "v7",
"preset": "empty",
"turbo": true
}Step 4:
Export files to Amazon S3
We export to the storage platform of your choice.Learn more
"exported": {
"use": [
":original",
"encode",
"blur-fade"
],
"robot": "/s3/store",
"credentials": "demo_s3_credentials",
"url_prefix": "https://demos.transloadit.com/"
}Live Demo. See for yourself
Loading Uppy demo…
This live demo is powered by 
Uppy, our open source file uploader that you can also use without Transloadit, and 
tus, our open protocol for resumable file uploads that is making uploading more reliable across the world.
Build this in your own language
<!-- This pulls Uppy from our CDN -->
<!-- For smaller self-hosted bundles, install Uppy and plugins manually: -->
<!-- npm i --save @uppy/core @uppy/dashboard @uppy/remote-sources @uppy/transloadit ... -->
<link
href="https://releases.transloadit.com/uppy/v3.10.0/uppy.min.css"
rel="stylesheet"
/>
<button id="browse">Select Files</button>
<script type="module">
import {
Uppy,
Dashboard,
ImageEditor,
RemoteSources,
Transloadit,
} from 'https://releases.transloadit.com/uppy/v3.10.0/uppy.min.mjs'
const uppy = new Uppy()
.use(Transloadit, {
waitForEncoding: true,
alwaysRunAssembly: true,
assemblyOptions: {
params: {
// It's often better store encoding instructions in your account
// and use a `template_id` instead of adding these steps inline
steps: {
':original': {
robot: '/upload/handle',
},
encode: {
use: ':original',
robot: '/video/encode',
result: true,
ffmpeg_stack: 'v7',
preset: 'ipad-high',
turbo: true,
},
'blur-fade': {
use: 'encode',
robot: '/video/encode',
result: true,
ffmpeg: {
filter_complex: '[0:v]split=2[base][blurred], [blurred]boxblur=luma_radius=50:chroma_radius=25:luma_power=1[blurred], [blurred]fade=type=in:start_time=3:duration=2:alpha=1[blurred-with-fadein], [base][blurred-with-fadein]overlay[blurout]',
map: '[blurout]',
},
ffmpeg_stack: 'v7',
preset: 'empty',
turbo: true,
},
exported: {
use: [':original', 'encode', 'blur-fade'],
robot: '/s3/store',
credentials: 'demo_s3_credentials',
url_prefix: 'https://demos.transloadit.com/',
},
},
},
},
})
.use(Dashboard, { trigger: '#browse' })
.use(ImageEditor, { target: Dashboard })
.use(RemoteSources, {
companionUrl: 'https://api2.transloadit.com/companion',
})
.on('complete', ({ transloadit }) => {
// Due to `waitForEncoding:true` this is fired after encoding is done.
// Alternatively, set `waitForEncoding` to `false` and provide a `notify_url`
console.log(transloadit) // Array of Assembly Statuses
for (const assembly of transloadit) {
console.log(assembly.results) // Array of all encoding results
}
})
.on('error', (error) => {
console.error(error)
})
</script>
So many ways to integrate
Transloadit is a service for companies with developers. And there are many ways developers can put Transloadit to good use inside your company to automate media processing.
Bulk imports
Add one of our import Robots to acquire and transcode massive media libraries.
Handling uploads
We are the experts at reliably handling uploads. We wrote the protocol for it.
Front-end integration
We integrate with web browsers via our next-gen file uploader Uppy and SDKs for Android and iOS.
Back-end integration
Send us batch jobs in any server language using one of our SDKs or directly interfacing with our REST API.
Pingbacks
Configure a notify_url to let your server receive transcoding results JSON in the transloadit POST field.
On-demand
Use our Smart CDN to adapt files on-demand and stream them directly to your users.
Video encoding
Document processing