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 2020, as well as our open source projects uppy.io and tus.io, which are changing how the world does file uploading.

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Encode a fade effect between concatenated video files.

Our /video/concat Robot enables you to concatenate together all your video files quickly and easily whilst encoding a fade effect between each clip.

If you were looking for a way to add some extra flair to your concatenated videos you are in luck. With this demo, we are going to show how adding both the video_fade_seconds and audio_fade_seconds parameters can make all the difference. As well, we are going to look into how we can overcome the parameters shortcoming of not adding a fade effect at the beginning and end of your videos using the ffmpeg parameter.

To make sure we have everything all set up as needed for our concatenation to take place, we first need to resize both of our video clips. We do this by passing both our imported videos to the /video/encode Robot making sure we set the same dimensions and preset value.

Now we have both our files prepared we can pass them to our /video/concat Robot. Within our use parameter we set up both the name value of our previously resized step, along with an as value. When concatenating videos the order they are set in is specified by how we set up by our as value, so for example as: "video_1" would come before as: "video_2".

To add our fancy fade effect we set up both the video_fade_seconds and audio_fade_seconds parameters with values to specify how long we want these transitions to last between each video file. These parameters allow you to seamlessly create both an audio and video fade effect between your video files. This even allows for millisecond values to be represented by using decimal values. So if you wanted the fade effect to last 750 milliseconds, you would select 0.75.

With our fade effects in place, why don't we add a video fade at the beginning and end of our video? Because our /video/concat Robot works by using FFMpeg, if we try add any additional vf parameter values, this will result in a error. So to bypass this, we need to pass our concatenate step to our /video/encode Robot. We have already encoded our videos preset value in our previous step, so no need to do that again. Simply add a preset parameter, and set its value to empty so the Robot can run as intended.

Using our ffmpeg parameter, we set up a vf parameter and set its value to fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1. This creates a video fade-in and fade-out effect at the start and end of our final file. Note I have set "start_time=-1" at the end of the parameter value. This specifies that we want the video fade-out effect to begin, a second before the file ends.

Now with everything set up, we are good to run and see the final result. Happy Encoding!

Warning It seems your browser does not send the referer, which we need to stop people from (ab)using our demos in other websites. If you want to use the demos, please allow your browser to send its referer to us. Adding us to the whitelist of blockers usually helps.

1. Handle uploads

We can handle uploads of your users directly. Learn more ›

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
kite10.mp4
2.1 MB · 13s · 1024 × 768
":original": {
  "robot": "/upload/handle"
}
/upload/handle Robot
This bot receives uploads that your users throw at you from browser or apps, or that you throw at us programmatically

2. Import files from Webservers

We are happy to import from whatever storage solution suits you best. Learn more ›

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
waves10-0.mp4
2.0 MB · 13s · 1024 × 768
"preroll_imported": {
  "robot": "/http/import",
  "result": true,
  "url": "https://demos.transloadit.com/inputs/waves10.mp4"
}
/http/import Robot
This bot imports any file that is publicly available via a web URL into Transloadit

3. Resize videos to 480×270 and encode for iPad (high quality) (H.264)

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 ›

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
waves10-0.mp4
2.0 MB · 13s · 480 × 270
"preroll_resized": {
  "robot": "/video/encode",
  "use": "preroll_imported",
  "result": true,
  "ffmpeg_stack": "v3.3.3",
  "preset": "ipad-high",
  "width": 480,
  "height": 270,
  "resize_strategy": "pad",
  "background": "#000000"
}
/video/encode Robot
This bot encodes, resizes, applies watermarks to videos and animated GIFs

4. Resize videos to 480×270 and encode for iPad (high quality) (H.264)

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
kite10-0.mp4
2.1 MB · 13s · 480 × 270
"original_resized": {
  "robot": "/video/encode",
  "use": ":original",
  "result": true,
  "ffmpeg_stack": "v3.3.3",
  "preset": "ipad-high",
  "width": 480,
  "height": 270,
  "resize_strategy": "pad",
  "background": "#000000"
}
/video/encode Robot
This bot encodes, resizes, applies watermarks to videos and animated GIFs

5. Concatenate 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 ›

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
kite10_waves10-0.mp4
4.2 MB · 26s · 480 × 270
"concatenated": {
  "use": {
    "steps": [
      {
        "name": "original_resized",
        "as": "video_1"
      },
      {
        "name": "preroll_resized",
        "as": "video_2"
      }
    ]
  },
  "robot": "/video/concat",
  "result": true,
  "ffmpeg_stack": "v3.3.3",
  "preset": "ipad-high",
  "video_fade_seconds": 1,
  "audio_fade_seconds": 1
}
/video/concat Robot
This bot concatenates several videos together

6. Transcode videos to Original Codec Settings

Warning It seems your browser does not support the codec used in this video of the demo. For demo simplicity we'll link you to the original file, but you may also want to learn how to make videos compatible for all browsers.
kite10_waves10-0.mp4
1.2 MB · 26s · 480 × 270
"encode": {
  "use": "concatenated",
  "robot": "/video/encode",
  "preset": "empty",
  "ffmpeg": {
    "vf": "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"
  },
  "ffmpeg_stack": "v3.3.3"
}
/video/encode Robot
This bot encodes, resizes, applies watermarks to videos and animated GIFs

7. Export files to Amazon S3

We export to the storage platform of your choice. Learn more ›

"exported": {
  "use": [
    "preroll_imported",
    "preroll_resized",
    "original_resized",
    "concatenated",
    "encode",
    ":original"
  ],
  "robot": "/s3/store",
  "credentials": "YOUR_AWS_CREDENTIALS",
  "url_prefix": "https://demos.transloadit.com/"
}
/s3/store Robot
This bot exports encoding results to Amazon S3
Since this is a store Robot, be sure to use Template Credentials so that any sensitive data is encrypted and stored in our database, making sure that they’re never exposed to any end-user.

Live Demo. See for yourself

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

{
  ":original": {
    "robot": "/upload/handle"
  },
  "preroll_imported": {
    "robot": "/http/import",
    "result": true,
    "url": "https://demos.transloadit.com/inputs/waves10.mp4"
  },
  "preroll_resized": {
    "robot": "/video/encode",
    "use": "preroll_imported",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "width": 480,
    "height": 270,
    "resize_strategy": "pad",
    "background": "#000000"
  },
  "original_resized": {
    "robot": "/video/encode",
    "use": ":original",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "width": 480,
    "height": 270,
    "resize_strategy": "pad",
    "background": "#000000"
  },
  "concatenated": {
    "use": {
      "steps": [
        {
          "name": "original_resized",
          "as": "video_1"
        },
        {
          "name": "preroll_resized",
          "as": "video_2"
        }
      ]
    },
    "robot": "/video/concat",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "video_fade_seconds": 1,
    "audio_fade_seconds": 1
  },
  "encode": {
    "use": "concatenated",
    "robot": "/video/encode",
    "preset": "empty",
    "ffmpeg": {
      "vf": "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"
    },
    "ffmpeg_stack": "v3.3.3"
  },
  "exported": {
    "use": [
      "preroll_imported",
      "preroll_resized",
      "original_resized",
      "concatenated",
      "encode",
      ":original"
    ],
    "robot": "/s3/store",
    "credentials": "YOUR_AWS_CREDENTIALS",
    "url_prefix": "https://demos.transloadit.com/"
  }
}
# Prerequisites: brew install curl jq || sudo apt install curl jq
# To avoid tampering, use Signature Authentication
echo '{
  "auth": {
    "key": "YOUR_TRANSLOADIT_KEY"
  },
  "steps": {
    ":original": {
      "robot": "/upload/handle"
    },
    "preroll_imported": {
      "robot": "/http/import",
      "result": true,
      "url": "https://demos.transloadit.com/inputs/waves10.mp4"
    },
    "preroll_resized": {
      "robot": "/video/encode",
      "use": "preroll_imported",
      "result": true,
      "ffmpeg_stack": "v3.3.3",
      "preset": "ipad-high",
      "width": 480,
      "height": 270,
      "resize_strategy": "pad",
      "background": "#000000"
    },
    "original_resized": {
      "robot": "/video/encode",
      "use": ":original",
      "result": true,
      "ffmpeg_stack": "v3.3.3",
      "preset": "ipad-high",
      "width": 480,
      "height": 270,
      "resize_strategy": "pad",
      "background": "#000000"
    },
    "concatenated": {
      "use": {
        "steps": [
          {
            "name": "original_resized",
            "as": "video_1"
          },
          {
            "name": "preroll_resized",
            "as": "video_2"
          }
        ]
      },
      "robot": "/video/concat",
      "result": true,
      "ffmpeg_stack": "v3.3.3",
      "preset": "ipad-high",
      "video_fade_seconds": 1,
      "audio_fade_seconds": 1
    },
    "encode": {
      "use": "concatenated",
      "robot": "/video/encode",
      "preset": "empty",
      "ffmpeg": {
        "vf": "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"
      },
      "ffmpeg_stack": "v3.3.3"
    },
    "exported": {
      "use": [
        "preroll_imported",
        "preroll_resized",
        "original_resized",
        "concatenated",
        "encode",
        ":original"
      ],
      "robot": "/s3/store",
      "credentials": "YOUR_AWS_CREDENTIALS",
      "url_prefix": "https://demos.transloadit.com/"
    }
  }
}' |curl \
    --request POST \
    --form params=@- \
    --form my_file1=@./kite10.mp4 \
  https://api2.transloadit.com/assemblies \
|jq
// Add 'Transloadit' to your Podfile, run 'pod install', add credentials to 'Info.plist'
import Arcane
import TransloaditKit

// Set Encoding Instructions
var AssemblySteps: Array = Array<Step>() // An array to hold the Steps

var Step1 = Step (key: ":original") // Create a Step object
Step1?.setValue("/upload/handle", forOption: "robot") // Add the details
AssemblySteps.append(Step1) // Add the Step to the array

var Step2 = Step (key: "preroll_imported") // Create a Step object
Step2?.setValue("/http/import", forOption: "robot") // Add the details
Step2?.setValue(true, forOption: "result") // Add the details
Step2?.setValue("https://demos.transloadit.com/inputs/waves10.mp4", forOption: "url") // Add the details
AssemblySteps.append(Step2) // Add the Step to the array

var Step3 = Step (key: "preroll_resized") // Create a Step object
Step3?.setValue("preroll_imported", forOption: "use") // Add the details
Step3?.setValue("/video/encode", forOption: "robot") // Add the details
Step3?.setValue(true, forOption: "result") // Add the details
Step3?.setValue("#000000", forOption: "background") // Add the details
Step3?.setValue("v3.3.3", forOption: "ffmpeg_stack") // Add the details
Step3?.setValue(270, forOption: "height") // Add the details
Step3?.setValue("ipad-high", forOption: "preset") // Add the details
Step3?.setValue("pad", forOption: "resize_strategy") // Add the details
Step3?.setValue(480, forOption: "width") // Add the details
AssemblySteps.append(Step3) // Add the Step to the array

var Step4 = Step (key: "original_resized") // Create a Step object
Step4?.setValue(":original", forOption: "use") // Add the details
Step4?.setValue("/video/encode", forOption: "robot") // Add the details
Step4?.setValue(true, forOption: "result") // Add the details
Step4?.setValue("#000000", forOption: "background") // Add the details
Step4?.setValue("v3.3.3", forOption: "ffmpeg_stack") // Add the details
Step4?.setValue(270, forOption: "height") // Add the details
Step4?.setValue("ipad-high", forOption: "preset") // Add the details
Step4?.setValue("pad", forOption: "resize_strategy") // Add the details
Step4?.setValue(480, forOption: "width") // Add the details
AssemblySteps.append(Step4) // Add the Step to the array

var Step5 = Step (key: "concatenated") // Create a Step object
Step5?.setValue({"steps":[{"name":"original_resized","as":"video_1"},{"name":"preroll_resized","as":"video_2"}]}, forOption: "use") // Add the details
Step5?.setValue("/video/concat", forOption: "robot") // Add the details
Step5?.setValue(true, forOption: "result") // Add the details
Step5?.setValue(1, forOption: "audio_fade_seconds") // Add the details
Step5?.setValue("v3.3.3", forOption: "ffmpeg_stack") // Add the details
Step5?.setValue("ipad-high", forOption: "preset") // Add the details
Step5?.setValue(1, forOption: "video_fade_seconds") // Add the details
AssemblySteps.append(Step5) // Add the Step to the array

var Step6 = Step (key: "encode") // Create a Step object
Step6?.setValue("concatenated", forOption: "use") // Add the details
Step6?.setValue("/video/encode", forOption: "robot") // Add the details
Step6?.setValue({"vf":"fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"}, forOption: "ffmpeg") // Add the details
Step6?.setValue("v3.3.3", forOption: "ffmpeg_stack") // Add the details
Step6?.setValue("empty", forOption: "preset") // Add the details
AssemblySteps.append(Step6) // Add the Step to the array

var Step7 = Step (key: "exported") // Create a Step object
Step7?.setValue(["preroll_imported","preroll_resized","original_resized","concatenated","encode",":original"], forOption: "use") // Add the details
Step7?.setValue("/s3/store", forOption: "robot") // Add the details
Step7?.setValue("YOUR_AWS_CREDENTIALS", forOption: "credentials") // Add the details
Step7?.setValue("https://demos.transloadit.com/", forOption: "url_prefix") // Add the details
AssemblySteps.append(Step7) // Add the Step to the array

// We then create an Assembly Object with the Steps and files
var MyAssembly: Assembly = Assembly(steps: AssemblySteps, andNumberOfFiles: 1)

// Add files to upload
MyAssembly.addFile("./kite10.mp4")

// Start the Assembly
Transloadit.createAssembly(MyAssembly) 

// Fires after your Assembly has completed
transloadit.assemblyStatusBlock = {(_ completionDictionary: [AnyHashable: Any]) -> Void in
  print("\(completionDictionary.description)")
}
<body>
  <form action="/uploads" enctype="multipart/form-data" method="POST">
    <input type="file" name="my_file" multiple="multiple" />
  </form>

  <script src="//ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
  <script src="//assets.transloadit.com/js/jquery.transloadit2-v3-latest.js"></script>
  <script type="text/javascript">
  $(function() {
    $('form').transloadit({
      wait: true,
      triggerUploadOnFileSelection: true,
      params: {
        auth: {
          // To avoid tampering use signatures:
          // https://transloadit.com/docs/api/#authentication
          key: 'YOUR_TRANSLOADIT_KEY',
        },
        // 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'
          },
          preroll_imported: {
            robot: '/http/import',
            result: true,
            url: 'https://demos.transloadit.com/inputs/waves10.mp4'
          },
          preroll_resized: {
            use: 'preroll_imported',
            robot: '/video/encode',
            result: true,
            background: '#000000',
            ffmpeg_stack: 'v3.3.3',
            height: 270,
            preset: 'ipad-high',
            resize_strategy: 'pad',
            width: 480
          },
          original_resized: {
            use: ':original',
            robot: '/video/encode',
            result: true,
            background: '#000000',
            ffmpeg_stack: 'v3.3.3',
            height: 270,
            preset: 'ipad-high',
            resize_strategy: 'pad',
            width: 480
          },
          concatenated: {
            use: {'steps':[{'name':'original_resized','as':'video_1'},{'name':'preroll_resized','as':'video_2'}]},
            robot: '/video/concat',
            result: true,
            audio_fade_seconds: 1,
            ffmpeg_stack: 'v3.3.3',
            preset: 'ipad-high',
            video_fade_seconds: 1
          },
          encode: {
            use: 'concatenated',
            robot: '/video/encode',
            ffmpeg: {'vf':'fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1'},
            ffmpeg_stack: 'v3.3.3',
            preset: 'empty'
          },
          exported: {
            use: ['preroll_imported','preroll_resized','original_resized','concatenated','encode',':original'],
            robot: '/s3/store',
            credentials: 'YOUR_AWS_CREDENTIALS',
            url_prefix: 'https://demos.transloadit.com/'
          }
        }
      }
    });
  });
  </script>
</body>
<!-- This pulls Uppy from our CDN. Alternatively use `npm i @uppy/robodog --save` -->
<!-- if you want smaller self-hosted bundles and/or to use modern JavaScript -->
<link href="//transloadit.edgly.net/releases/uppy/robodog/v1.6.4/robodog.min.css" rel="stylesheet">
<script src="//transloadit.edgly.net/releases/uppy/robodog/v1.6.4/robodog.min.js"></script>
<button id="browse">Select Files</button>
<script>
  document.getElementById('browse').addEventListener('click', function () {
    var uppy = window.Robodog.pick({
      providers: [ 'instagram', 'url', 'webcam', 'dropbox', 'google-drive', 'facebook', 'onedrive' ],
      waitForEncoding: true,
      params: {
        // To avoid tampering, use Signature Authentication
        auth: { key: 'YOUR_TRANSLOADIT_KEY' },
        // To hide your `steps`, use a `template_id` instead
        steps: {
          ':original': {
            robot: '/upload/handle'
          },
          preroll_imported: {
            robot: '/http/import',
            result: true,
            url: 'https://demos.transloadit.com/inputs/waves10.mp4'
          },
          preroll_resized: {
            use: 'preroll_imported',
            robot: '/video/encode',
            result: true,
            background: '#000000',
            ffmpeg_stack: 'v3.3.3',
            height: 270,
            preset: 'ipad-high',
            resize_strategy: 'pad',
            width: 480
          },
          original_resized: {
            use: ':original',
            robot: '/video/encode',
            result: true,
            background: '#000000',
            ffmpeg_stack: 'v3.3.3',
            height: 270,
            preset: 'ipad-high',
            resize_strategy: 'pad',
            width: 480
          },
          concatenated: {
            use: {'steps':[{'name':'original_resized', 'as':'video_1'},{'name':'preroll_resized', 'as':'video_2'}]},
            robot: '/video/concat',
            result: true,
            audio_fade_seconds: 1,
            ffmpeg_stack: 'v3.3.3',
            preset: 'ipad-high',
            video_fade_seconds: 1
          },
          encode: {
            use: 'concatenated',
            robot: '/video/encode',
            ffmpeg: {'vf':'fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1'},
            ffmpeg_stack: 'v3.3.3',
            preset: 'empty'
          },
          exported: {
            use: ['preroll_imported', 'preroll_resized', 'original_resized', 'concatenated', 'encode', ':original'],
            robot: '/s3/store',
            credentials: 'YOUR_AWS_CREDENTIALS',
            url_prefix: 'https://demos.transloadit.com/'
          }
        }
      }
    }).then(function (bundle) {
      // Due to `waitForEncoding: true` this is fired after encoding is done.
      // Alternatively, set `waitForEncoding` to `false` and provide a `notify_url`
      // for Async Mode where your back-end receives the encoding results
      // so that your user can be on their way as soon as the upload completes.
      console.log(bundle.transloadit) // Array of Assembly Statuses
      console.log(bundle.results)     // Array of all encoding results
    }).catch(console.error)
  })
</script>
// yarn add transloadit || npm i transloadit --save-exact
const Transloadit = require('transloadit')

const transloadit = new Transloadit({
  authKey: 'YOUR_TRANSLOADIT_KEY',
  authSecret: 'YOUR_TRANSLOADIT_SECRET'
})

// Set Encoding Instructions
const options = {
  params: {
    steps: {
      ':original': {
        robot: '/upload/handle',
      },
      preroll_imported: {
        robot: '/http/import',
        result: true,
        url: 'https://demos.transloadit.com/inputs/waves10.mp4',
      },
      preroll_resized: {
        use: 'preroll_imported',
        robot: '/video/encode',
        result: true,
        background: '#000000',
        ffmpeg_stack: 'v3.3.3',
        height: 270,
        preset: 'ipad-high',
        resize_strategy: 'pad',
        width: 480,
      },
      original_resized: {
        use: ':original',
        robot: '/video/encode',
        result: true,
        background: '#000000',
        ffmpeg_stack: 'v3.3.3',
        height: 270,
        preset: 'ipad-high',
        resize_strategy: 'pad',
        width: 480,
      },
      concatenated: {
        use: {'steps':[{'name':'original_resized','as':'video_1'},{'name':'preroll_resized','as':'video_2'}]},
        robot: '/video/concat',
        result: true,
        audio_fade_seconds: 1,
        ffmpeg_stack: 'v3.3.3',
        preset: 'ipad-high',
        video_fade_seconds: 1,
      },
      encode: {
        use: 'concatenated',
        robot: '/video/encode',
        ffmpeg: {'vf':'fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1'},
        ffmpeg_stack: 'v3.3.3',
        preset: 'empty',
      },
      exported: {
        use: ['preroll_imported','preroll_resized','original_resized','concatenated','encode',':original'],
        robot: '/s3/store',
        credentials: 'YOUR_AWS_CREDENTIALS',
        url_prefix: 'https://demos.transloadit.com/',
      },
    }
  }
}

// Add files to upload
transloadit.addFile('myfile_1', './kite10.mp4')

// Start the Assembly
transloadit.createAssembly(options, (err, result) => {
  if (err) {
    throw err
  }

  console.log({result})
})
[sudo] npm install transloadify -g

export TRANSLOADIT_KEY="YOUR_TRANSLOADIT_KEY"
export TRANSLOADIT_SECRET="YOUR_TRANSLOADIT_SECRET"

# Save Encoding Instructions
echo '{
  ":original": {
    "robot": "/upload/handle"
  },
  "preroll_imported": {
    "robot": "/http/import",
    "result": true,
    "url": "https://demos.transloadit.com/inputs/waves10.mp4"
  },
  "preroll_resized": {
    "robot": "/video/encode",
    "use": "preroll_imported",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "width": 480,
    "height": 270,
    "resize_strategy": "pad",
    "background": "#000000"
  },
  "original_resized": {
    "robot": "/video/encode",
    "use": ":original",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "width": 480,
    "height": 270,
    "resize_strategy": "pad",
    "background": "#000000"
  },
  "concatenated": {
    "use": {
      "steps": [
        {
          "name": "original_resized",
          "as": "video_1"
        },
        {
          "name": "preroll_resized",
          "as": "video_2"
        }
      ]
    },
    "robot": "/video/concat",
    "result": true,
    "ffmpeg_stack": "v3.3.3",
    "preset": "ipad-high",
    "video_fade_seconds": 1,
    "audio_fade_seconds": 1
  },
  "encode": {
    "use": "concatenated",
    "robot": "/video/encode",
    "preset": "empty",
    "ffmpeg": {
      "vf": "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"
    },
    "ffmpeg_stack": "v3.3.3"
  },
  "exported": {
    "use": [
      "preroll_imported",
      "preroll_resized",
      "original_resized",
      "concatenated",
      "encode",
      ":original"
    ],
    "robot": "/s3/store",
    "credentials": "YOUR_AWS_CREDENTIALS",
    "url_prefix": "https://demos.transloadit.com/"
  }
}' > ./steps.json

transloadify \
  --input "./kite10.mp4" \
  --output "./output.example" \
  --steps "./steps.json"  
// composer require transloadit/php-sdk
use transloadit\Transloadit;
$transloadit = new Transloadit([
  "key" => "YOUR_TRANSLOADIT_KEY",
  "secret" => "YOUR_TRANSLOADIT_SECRET",
]);

// Add files to upload
$files = [];
array_push($files, "./kite10.mp4")

// Start the Assembly
$response = $transloadit->createAssembly([
  "files" => $files, 
  "params" => [
    "steps" => [
      ":original" => [
        "robot" => "/upload/handle",
      ],
      "preroll_imported" => [
        "robot" => "/http/import",
        "result" => true,
        "url" => "https://demos.transloadit.com/inputs/waves10.mp4",
      ],
      "preroll_resized" => [
        "use" => "preroll_imported",
        "robot" => "/video/encode",
        "result" => true,
        "background" => "#000000",
        "ffmpeg_stack" => "v3.3.3",
        "height" => 270,
        "preset" => "ipad-high",
        "resize_strategy" => "pad",
        "width" => 480,
      ],
      "original_resized" => [
        "use" => ":original",
        "robot" => "/video/encode",
        "result" => true,
        "background" => "#000000",
        "ffmpeg_stack" => "v3.3.3",
        "height" => 270,
        "preset" => "ipad-high",
        "resize_strategy" => "pad",
        "width" => 480,
      ],
      "concatenated" => [
        "use" => [
          "steps" => [
            ["name" => "original_resized", "as" => "video_1"],
            ["name" => "preroll_resized", "as" => "video_2"],
          ],
        ],
        "robot" => "/video/concat",
        "result" => true,
        "audio_fade_seconds" => 1,
        "ffmpeg_stack" => "v3.3.3",
        "preset" => "ipad-high",
        "video_fade_seconds" => 1,
      ],
      "encode" => [
        "use" => "concatenated",
        "robot" => "/video/encode",
        "ffmpeg" => [
          "vf" => "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1",
        ],
        "ffmpeg_stack" => "v3.3.3",
        "preset" => "empty",
      ],
      "exported" => [
        "use" => ["preroll_imported", "preroll_resized", "original_resized", "concatenated", "encode", ":original"],
        "robot" => "/s3/store",
        "credentials" => "YOUR_AWS_CREDENTIALS",
        "url_prefix" => "https://demos.transloadit.com/",
      ],
    ],
  ],
]);
# gem install transloadit
transloadit = Transloadit.new(
  :key => "YOUR_TRANSLOADIT_KEY",
  :secret => "YOUR_TRANSLOADIT_SECRET"
)

# Set Encoding Instructions
:original = transloadit.step ":original", "/upload/handle",
)
preroll_imported = transloadit.step "preroll_imported", "/http/import",
  :result => true,
  :url => "https://demos.transloadit.com/inputs/waves10.mp4"
)
preroll_resized = transloadit.step "preroll_resized", "/video/encode",
  :use => "preroll_imported",
  :result => true,
  :background => "#000000",
  :ffmpeg_stack => "v3.3.3",
  :height => 270,
  :preset => "ipad-high",
  :resize_strategy => "pad",
  :width => 480
)
original_resized = transloadit.step "original_resized", "/video/encode",
  :use => ":original",
  :result => true,
  :background => "#000000",
  :ffmpeg_stack => "v3.3.3",
  :height => 270,
  :preset => "ipad-high",
  :resize_strategy => "pad",
  :width => 480
)
concatenated = transloadit.step "concatenated", "/video/concat",
  :use => {"steps":[{"name":"original_resized","as":"video_1"},{"name":"preroll_resized","as":"video_2"}]},
  :result => true,
  :audio_fade_seconds => 1,
  :ffmpeg_stack => "v3.3.3",
  :preset => "ipad-high",
  :video_fade_seconds => 1
)
encode = transloadit.step "encode", "/video/encode",
  :use => "concatenated",
  :ffmpeg => {"vf":"fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"},
  :ffmpeg_stack => "v3.3.3",
  :preset => "empty"
)
exported = transloadit.step "exported", "/s3/store",
  :use => ["preroll_imported","preroll_resized","original_resized","concatenated","encode",":original"],
  :credentials => "YOUR_AWS_CREDENTIALS",
  :url_prefix => "https://demos.transloadit.com/"
)

assembly = transloadit.assembly(
  :steps => [ :original, preroll_imported, preroll_resized, original_resized, concatenated, encode, exported ]
)

# Add files to upload
files = []
files.push("./kite10.mp4")

# Start the Assembly
response = assembly.create! *files

until response.finished?
  sleep 1; response.reload!
end

if !response.error?
  # handle success
end
# pip install pytransloadit
from transloadit import client

tl = client.Transloadit('YOUR_TRANSLOADIT_KEY', 'YOUR_TRANSLOADIT_SECRET')
assembly = tl.new_assembly()

# Set Encoding Instructions
assembly.add_step(':original', {
  'robot': '/upload/handle'
})
assembly.add_step('preroll_imported', {
  'robot': '/http/import',
  'result': true,
  'url': 'https://demos.transloadit.com/inputs/waves10.mp4'
})
assembly.add_step('preroll_resized', {
  'use': 'preroll_imported',
  'robot': '/video/encode',
  'result': true,
  'background': '#000000',
  'ffmpeg_stack': 'v3.3.3',
  'height': 270,
  'preset': 'ipad-high',
  'resize_strategy': 'pad',
  'width': 480
})
assembly.add_step('original_resized', {
  'use': ':original',
  'robot': '/video/encode',
  'result': true,
  'background': '#000000',
  'ffmpeg_stack': 'v3.3.3',
  'height': 270,
  'preset': 'ipad-high',
  'resize_strategy': 'pad',
  'width': 480
})
assembly.add_step('concatenated', {
  'use': {'steps':[{'name':'original_resized','as':'video_1'},{'name':'preroll_resized','as':'video_2'}]},
  'robot': '/video/concat',
  'result': true,
  'audio_fade_seconds': 1,
  'ffmpeg_stack': 'v3.3.3',
  'preset': 'ipad-high',
  'video_fade_seconds': 1
})
assembly.add_step('encode', {
  'use': 'concatenated',
  'robot': '/video/encode',
  'ffmpeg': {'vf':'fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1'},
  'ffmpeg_stack': 'v3.3.3',
  'preset': 'empty'
})
assembly.add_step('exported', {
  'use': ['preroll_imported','preroll_resized','original_resized','concatenated','encode',':original'],
  'robot': '/s3/store',
  'credentials': 'YOUR_AWS_CREDENTIALS',
  'url_prefix': 'https://demos.transloadit.com/'
})
# Add files to upload
assembly.add_file(open('./kite10.mp4', 'rb'))

# Start the Assembly
assembly_response = assembly.create(retries=5, wait=True)

print assembly_response.data.get('assembly_id')

# or
print assembly_response.data['assembly_id']
// go get gopkg.in/transloadit/go-sdk.v1
package main

import (
	"fmt"

	"gopkg.in/transloadit/go-sdk.v1"
)

options := transloadit.DefaultConfig
options.AuthKey = "YOUR_TRANSLOADIT_KEY"
options.AuthSecret = "YOUR_TRANSLOADIT_SECRET"
client := transloadit.NewClient(options)

// Initialize new Assembly
assembly := transloadit.NewAssembly()

// Set Encoding Instructions
assembly.AddStep(":original", map[string]interface{}{
  "robot": "/upload/handle"
})
assembly.AddStep("preroll_imported", map[string]interface{}{
  "robot": "/http/import",
  "result": true,
  "url": "https://demos.transloadit.com/inputs/waves10.mp4"
})
assembly.AddStep("preroll_resized", map[string]interface{}{
  "use": "preroll_imported",
  "robot": "/video/encode",
  "result": true,
  "background": "#000000",
  "ffmpeg_stack": "v3.3.3",
  "height": 270,
  "preset": "ipad-high",
  "resize_strategy": "pad",
  "width": 480
})
assembly.AddStep("original_resized", map[string]interface{}{
  "use": ":original",
  "robot": "/video/encode",
  "result": true,
  "background": "#000000",
  "ffmpeg_stack": "v3.3.3",
  "height": 270,
  "preset": "ipad-high",
  "resize_strategy": "pad",
  "width": 480
})
assembly.AddStep("concatenated", map[string]interface{}{
  "use": {"steps":[{"name":"original_resized", "as":"video_1"},{"name":"preroll_resized", "as":"video_2"}]},
  "robot": "/video/concat",
  "result": true,
  "audio_fade_seconds": 1,
  "ffmpeg_stack": "v3.3.3",
  "preset": "ipad-high",
  "video_fade_seconds": 1
})
assembly.AddStep("encode", map[string]interface{}{
  "use": "concatenated",
  "robot": "/video/encode",
  "ffmpeg": {"vf":"fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1"},
  "ffmpeg_stack": "v3.3.3",
  "preset": "empty"
})
assembly.AddStep("exported", map[string]interface{}{
  "use": ["preroll_imported", "preroll_resized", "original_resized", "concatenated", "encode", ":original"],
  "robot": "/s3/store",
  "credentials": "YOUR_AWS_CREDENTIALS",
  "url_prefix": "https://demos.transloadit.com/"
})

// Add files to upload
assembly.AddFile("myfile_1", "./kite10.mp4")

// Start the Assembly
info, err := client.StartAssembly(context.Background(), assembly)
if err != nil {
  panic(err)
}

// All files have now been uploaded and the Assembly has started but no
// results are available yet since the conversion has not finished.
// WaitForAssembly provides functionality for polling until the Assembly
// has ended.
info, err = client.WaitForAssembly(context.Background(), info)
if err != nil {
  panic(err)
}

fmt.Printf("You can check some results at: \n")
fmt.Printf("  - %s\n", info.Results[":original"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["preroll_imported"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["preroll_resized"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["original_resized"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["concatenated"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["encode"][0].SSLURL)
fmt.Printf("  - %s\n", info.Results["exported"][0].SSLURL)

// compile 'com.transloadit.sdk:transloadit:0.1.5'
import com.transloadit.sdk.Assembly;
import com.transloadit.sdk.Transloadit;
import com.transloadit.sdk.exceptions.LocalOperationException;
import com.transloadit.sdk.exceptions.RequestException;
import com.transloadit.sdk.response.AssemblyResponse;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

public class Main {
  public static void main(String[] args) {
    Transloadit transloadit = new Transloadit("YOUR_TRANSLOADIT_KEY", "YOUR_TRANSLOADIT_SECRET");
    Assembly assembly = transloadit.newAssembly();
    // Set Encoding Instructions
    Map<String Object> originalStepOptions = new HashMap();
    
    assembly.addStep(":original", "/upload/handle", originalStepOptions);
      
    Map<String Object> prerollImportedStepOptions = new HashMap();
    prerollImportedStepOptions.put("result", true);
    prerollImportedStepOptions.put("url", "https://demos.transloadit.com/inputs/waves10.mp4");
    assembly.addStep("preroll_imported", "/http/import", prerollImportedStepOptions);
      
    Map<String Object> prerollResizedStepOptions = new HashMap();
    prerollResizedStepOptions.put("use", "preroll_imported");
    prerollResizedStepOptions.put("result", true);
    prerollResizedStepOptions.put("background", "#000000");
    prerollResizedStepOptions.put("ffmpeg_stack", "v3.3.3");
    prerollResizedStepOptions.put("height", 270);
    prerollResizedStepOptions.put("preset", "ipad-high");
    prerollResizedStepOptions.put("resize_strategy", "pad");
    prerollResizedStepOptions.put("width", 480);
    assembly.addStep("preroll_resized", "/video/encode", prerollResizedStepOptions);
      
    Map<String Object> originalResizedStepOptions = new HashMap();
    originalResizedStepOptions.put("use", ":original");
    originalResizedStepOptions.put("result", true);
    originalResizedStepOptions.put("background", "#000000");
    originalResizedStepOptions.put("ffmpeg_stack", "v3.3.3");
    originalResizedStepOptions.put("height", 270);
    originalResizedStepOptions.put("preset", "ipad-high");
    originalResizedStepOptions.put("resize_strategy", "pad");
    originalResizedStepOptions.put("width", 480);
    assembly.addStep("original_resized", "/video/encode", originalResizedStepOptions);
      
    Map<String Object> concatenatedStepOptions = new HashMap();
    concatenatedStepOptions.put("use", new HashMap(){{
          put("steps", new String[]{"{"name"=>"original_resized", "as"=>"video_1"}", "{"name"=>"preroll_resized", "as"=>"video_2"}"});
      }});
    concatenatedStepOptions.put("result", true);
    concatenatedStepOptions.put("audio_fade_seconds", 1);
    concatenatedStepOptions.put("ffmpeg_stack", "v3.3.3");
    concatenatedStepOptions.put("preset", "ipad-high");
    concatenatedStepOptions.put("video_fade_seconds", 1);
    assembly.addStep("concatenated", "/video/concat", concatenatedStepOptions);
      
    Map<String Object> encodeStepOptions = new HashMap();
    encodeStepOptions.put("use", "concatenated");
    encodeStepOptions.put("ffmpeg", new HashMap(){{
          put("vf", "fade=type=in:duration=1,fade=type=out:duration=1:start_time=-1");
      }});
    encodeStepOptions.put("ffmpeg_stack", "v3.3.3");
    encodeStepOptions.put("preset", "empty");
    assembly.addStep("encode", "/video/encode", encodeStepOptions);
      
    Map<String Object> exportedStepOptions = new HashMap();
    exportedStepOptions.put("use", new String[]{"preroll_imported", "preroll_resized", "original_resized", "concatenated", "encode", ":original"});
    exportedStepOptions.put("credentials", "YOUR_AWS_CREDENTIALS");
    exportedStepOptions.put("url_prefix", "https://demos.transloadit.com/");
    assembly.addStep("exported", "/s3/store", exportedStepOptions);
      
    // Add files to upload
    assembly.addFile(new File("./kite10.mp4"));
    
    // Start the Assembly
    try {
      AssemblyResponse response = assembly.save();
      
      // Wait for Assembly to finish executing
      while (!response.isFinished()) {
        response = transloadit.getAssemblyByUrl(response.getSslUrl());
      }
      
      System.out.println(response.getId());
      System.out.println(response.getUrl());
      System.out.println(response.json());
    } catch (RequestException | LocalOperationException e) {
      // Handle exception here
    }
  }
}

So many ways to integrate

Transloadit is a service for companies with developers. As a developer, there are many ways you can put us to good use.
  • 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.

Try it in your account

Copy these instructions to a Template of your own
(you'll be able to make changes before actually saving)

Get started for free

  • Free plan with 2 GB encoding credit
  • Set monthly spending limits
  • Try without a credit card
  • Highly available, globally distributed platform
  • Cancel at any time
  • Costs displayed for each upload/conversion

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