# Filter out all audio files with a bit rate lower than 64K

With [🤖/file/filter](/docs/robots/file-filter.md) you can access all meta information that the file offers. Conditions on properties that a file does not have will be ignored. Please upload a file below that does not have a bit rate (e.g. an image) and see that it will be accepted.

Step 1

### Handle uploads

We can handle uploads of your users directly. [Learn more ›](/services/handling-uploads.md)

[bensound-energy-ba-62000.ogg](https://demos.transloadit.com/03/57160df5154879b6810566d0c56d54/bensound-energy-ba-62000.ogg)

Audio · 1.3 MB · 180s

[joakim\_karud-rock\_angel.mp3](https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim%5Fkarud-rock%5Fangel.mp3)

Audio · 8.9 MB · 233s

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

🤖 [/upload/handle](/docs/robots/upload-handle.md)

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 ›](/services/file-filtering.md)

[joakim\_karud-rock\_angel.mp3](https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim%5Fkarud-rock%5Fangel.mp3)

Audio · 8.9 MB · 233s

```
"files_filtered": {
  "use": ":original",
  "robot": "/file/filter",
  "result": true,
  "declines": [
    [
      "${file.meta.audio_bitrate}",
      "<",
      "65536"
    ]
  ]
}
```

🤖 [/file/filter](/docs/robots/file-filter.md)

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

Step 3

### Export files to Amazon S3

We export to the storage platform of your choice. [Learn more ›](/services/file-exporting.md)

`:original`

* [https://demos.transloadit.com/03/57160df5154879b6810566d0c56d54/bensound-energy-ba-62000.ogg⁠](https://demos.transloadit.com/03/57160df5154879b6810566d0c56d54/bensound-energy-ba-62000.ogg)
* [https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim\_karud-rock\_angel.mp3⁠](https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim%5Fkarud-rock%5Fangel.mp3)

`files_filtered`

* [https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim\_karud-rock\_angel.mp3⁠](https://demos.transloadit.com/86/fa6794598940f0904eaf8e0cf96524/joakim%5Fkarud-rock%5Fangel.mp3)

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

🤖 [/s3/store](/docs/robots/s3-store.md)

This bot exports encoding results to Amazon S3

## Live Demo. See for yourself

Loading Uppy demo…

This live demo is powered by [Uppy⁠](https://uppy.io/docs/guides/uppy-transloadit/), our open source file uploader that you can also use without Transloadit, and [tus⁠](https://tus.io), 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',
            },
            files_filtered: {
              use: ':original',
              robot: '/file/filter',
              result: true,
              declines: [['${file.meta.audio_bitrate}', '<', '65536']],
            },
            exported: {
              use: ['files_filtered', ':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](/docs/sdks/uppy.md)

## 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](/services/file-importing.md) to acquire and transcode massive media libraries.

#### Handling uploads

We are *the* experts at reliably [handling uploads](/services/handling-uploads.md). We wrote the [protocol⁠](https://tus.io/) for it.

#### Front-end integration

We integrate with web browsers via our next-gen file uploader [Uppy⁠](https://uppy.io/docs/guides/uppy-transloadit/) and SDKs for Android and iOS.

#### Back-end integration

Send us batch jobs in any server language using one of our [SDKs](/docs/sdks.md) or directly interfacing with our [REST API](/docs/api.md).

#### Pingbacks

Configure a [notify\_url](/services/content-delivery.md) to let your server receive transcoding results JSON in the `transloadit` POST field.

#### On-demand

Use our [Smart CDN](/services/file-importing.md) to adapt files on-demand and stream them directly to your users.

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

## Other cool demos

* [View demo→File Filtering & SecurityAutomatically decompress uploaded archives](/demos/file-filtering/automatically-extract-archives.md)
* [View demo→File Filtering & SecurityAutomatically filter files to separate encoding steps](/demos/file-filtering/filter-files-for-separate-encoding-steps.md)
* [View demo→Document ProcessingAdd a header or footer to a PDF](/demos/document-processing/add-header-or-footer-to-pdf.md)

Try Transloadit

## Ready to get started?

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Building file processing from scratch

Ready-to-use API & SDKs

Scaling infrastructure headaches

Auto-scaling global infrastructure

Managing codec updates

Always up-to-date processing

Handling file security

Enterprise-grade security

Supporting all file formats

1000+ formats & codecs supported

Fragmented media tooling

One API for file workflows

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GDPR

HIPAA

HIPAA

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ISO 27001

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SOC 2 Type II

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