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   1 # Optional software packages needed for specific functionality
   2
   3 For specific Pleroma functionality (which is disabled by default) some or all of the below packages are required:
   4   * `ImageMagic`
   5   * `ffmpeg`
   6   * `exiftool`
   7
   8 Please refer to documentation in `docs/installation` on how to install them on specific OS.
   9
  10 Note: the packages are not required with the current default settings of Pleroma.
  11
  12 ## `ImageMagick`
  13
  14 `ImageMagick` is a set of tools to create, edit, compose, or convert bitmap images.
  15
  16 It is required for the following Pleroma features:
  17   * `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
  18   * Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
  19
  20 ## `ffmpeg`
  21
  22 `ffmpeg` is software to record, convert and stream audio and video.
  23
  24 It is required for the following Pleroma features:
  25   * Media preview proxy for videos (related config: `media_preview_proxy/enabled` in `config/config.exs`)
  26
  27 ## `exiftool`
  28
  29 `exiftool` is media files metadata reader/writer.
  30
  31 It is required for the following Pleroma features:
  32   * `Pleroma.Upload.Filters.Exiftool` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)