UbuntuHelp:RestrictedFormats/AAC

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https://help.ubuntu.com/community/RestrictedFormats/AAC

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Playing and Creating AAC Files

• Playing AAC

  The default audio format used by Apple's iTunes and iPod is AAC. This is a variant of the MPEG standard, and as such has patent issues.

• • Ubuntu 6.06 LTS (Dapper Drake)

  Install the gstreamer0.10-plugins-bad-multiverse package. (Note: some people may need to also
  install gstreamer0.10-plugins-bad to make it work.)

• • Ubuntu 5.10 (Breezy Badger)

   You can listen to AAC files in rhythmbox or amarok by installing gstreamer0.8-faad.

 attachment:IconsPage/eyes.png Songs purchased from the iTunes music store (.m4p) are encrypted and will not play using gstreamer0.8-faad. You will have to decrypt them first.

• Creating AAC files

First, you must install support for encoding AAC. For Ubuntu 5.10, install gstreamer0.8-faac. For Ubuntu 6.06 and later, install gstreamer0.10-ffmpeg. To encode to AAC from CDs, follow the instructions at CD Ripping.

For other programs, you may be able to utilize FAAC directly to encode to AACs using the faac package.