Install aften by entering the following commands in the terminal:
sudo apt update sudo apt install aften
Description:
audio AC3 encoder
Aften is an audio encoder which generates compressed audio streams based on ATSC A/52 specification. This type of audio is also known as AC-3 or Dolby® Digital and is one of the audio codecs used in DVD-Video content.
Homepage: http://aften.sourceforge.net/
Version: 0.0.8+git20100105-0ubuntu3
Section: universe/sound