Reject videos that do not have an audio track

Sometimes, videos have no audio tracks and that can cause unwanted side-effects or even errors. If you would like to reject these kind of videos, you can use 🤖/file/filter to filter them out with an error, before any encoding takes place.

To give you something pretty to look at, we're passing in a file that matches the filter criteria. To see the filter in action rejecting files, try uploading a file that doesn't match the criteria :)

Step 1:

Handle uploads

We can handle uploads of your users directly.Learn more

surf.mp4

Video – 32 MB

22s · 1280 × 720

":original": {
  "robot": "/upload/handle"
}

/upload/handle

This bot receives uploads that your users throw at you from browser or apps, or that you throw at us programmatically

Step 2:

Filter files

We let you reject, or direct files against different encoding Steps.Learn more

3e61ec34ecce481c8680bba527eb1efb.mp4

Video – 32 MB

22s · 1280 × 720

"nomute_filtered": {
  "use": ":original",
  "robot": "/file/filter",
  "result": true,
  "declines": [
    [
      "${file.meta.audio_bitrate}",
      "==",
      ""
    ]
  ],
  "error_on_decline": true
}

/file/filter

This bot directs files to different encoding Steps based on your conditions

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

surf.mp4

Video – 1.8 MB

22s · 480 × 320

"iphone_encoded": {
  "use": ":original",
  "robot": "/video/encode",
  "result": true,
  "ffmpeg_stack": "v7",
  "preset": "iphone",
  "turbo": true
}

/video/encode

This bot encodes, resizes, applies watermarks to videos and animated GIFs

Step 4:

Export files to Amazon S3

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

:original

https://demos.transloadit.com/3e/61ec34ecce481c8680bba527eb1efb/surf.mp4

nomute_filtered

https://tmp-eu-west-1.transloadit.net/4ce4fb3d9d1842b6ba5d6f3ccee4b066/5274b2fb8bdc43a49f82470df9ee5d0c/3e61ec34ecce481c8680bba527eb1efb.mp4

iphone_encoded

https://demos.transloadit.com/11/f0ea32e168404592e639d8c3e072f2/surf.mp4

"exported": {
  "use": [
    "iphone_encoded",
    ":original"
  ],
  "robot": "/s3/store",
  "credentials": "demo_s3_credentials",
  "url_prefix": "https://demos.transloadit.com/"
}

/s3/store

This bot exports encoding results to Amazon S3

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',
            },
            nomute_filtered: {
              use: ':original',
              robot: '/file/filter',
              result: true,
              declines: [['${file.meta.audio_bitrate}', '==', '']],
              error_on_decline: true,
            },
            iphone_encoded: {
              use: ':original',
              robot: '/video/encode',
              result: true,
              ffmpeg_stack: 'v7',
              preset: 'iphone',
              turbo: true,
            },
            exported: {
              use: ['iphone_encoded', ':original'],
              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>

Read docs: Browsers

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.