Decompress archives

🤖/file/decompress extracts entire archives of files to be consumed by other Robots or exported as individual files.

Usage example

{
  "steps": {
    "decompressed": {
      "robot": "/file/decompress",
      "use": ":original"
    }
  }
}

Parameters

• output_meta

  Record<string, boolean> | boolean | Array<string>

  Allows you to specify a set of metadata that is more expensive on CPU power to calculate, and thus is disabled by default to keep your Assemblies processing fast.

  For images, you can add "has_transparency": true in this object to extract if the image contains transparent parts and "dominant_colors": true to extract an array of hexadecimal color codes from the image.

  For images, you can also add "blurhash": true to extract a BlurHash string — a compact representation of a placeholder for the image, useful for showing a blurred preview while the full image loads.

  For videos, you can add the "colorspace: true" parameter to extract the colorspace of the output video.

  For audio, you can add "mean_volume": true to get a single value representing the mean average volume of the audio file.

  You can also set this to false to skip metadata extraction and speed up transcoding.

• result

  boolean (default: false)

  Whether the results of this Step should be present in the Assembly Status JSON

• queue

  batch

  Setting the queue to 'batch', manually downgrades the priority of jobs for this step to avoid consuming Priority job slots for jobs that don't need zero queue waiting times

• force_accept

  boolean (default: false)

  Force a Robot to accept a file type it would have ignored.

  By default, Robots ignore files they are not familiar with. 🤖/video/encode, for example, will happily ignore input images.

  With the force_accept parameter set to true, you can force Robots to accept all files thrown at them. This will typically lead to errors and should only be used for debugging or combatting edge cases.

• ignore_errors

  boolean | Array<meta | execute> (default: [])

  A possible array member is only "meta".

  You might see an error when trying to extract metadata from the files inside your archive. This happens, for example, for files with a size of zero bytes. Setting this to true will cause the Robot to not stop the file decompression (and the entire Assembly) when that happens.

  To keep backwards compatibility, setting this parameter to true will set it to ["meta"] internally.

• use

  string | Array<string> | Array<object> | object

  Specifies which Step(s) to use as input.

  • You can pick any names for Steps except ":original" (reserved for user uploads handled by Transloadit)
  • You can provide several Steps as input with arrays:
    

    {
      "use": [
        ":original",
        "encoded",
        "resized"
      ]
    }
    

  Tip

  That's likely all you need to know about use, but you can view Advanced use cases.

• password

  string

  The password to use for decrypting password-protected archives.

  Supports encrypted ZIP (ZipCrypto and AES), RAR (encrypted), and 7z (AES-256 encrypted) archives.

  For security, this value should be passed via Template Variables (${fields.archive_password}) or Template Credentials rather than hardcoded in your Assembly Instructions. The password is never logged or included in Assembly status responses.

  If the archive is encrypted and no password is provided, or if the password is incorrect, the Assembly will fail with a FILE_DECOMPRESS_PASSWORD_REQUIRED or FILE_DECOMPRESS_PASSWORD_INCORRECT error.

Demos

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