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[Christophe C <1978405@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Audacity 2.4.2 in Ubuntu 21.10 and 22.04 (kinetic) has the same bug : impossible to export (save) an AAC file (m4a). The file could be open, read (play music), modify (for exemple cut a part of it). But it can't be save. 
"FFmpeg : ERROR - encoding frame failed"

After the message, Audacity loose is ability to read (play) the AAC
file.

Test on many AAC files, from differents origines : same problem.

Ubuntu-restricted-extras and FFmpeg are instaled :

apt policy ffmpeg (in impish)

ffmpeg:
  Installé : 7:4.4-6ubuntu5
  Candidat : 7:4.4-6ubuntu5
 Table de version :
 *** 7:4.4-6ubuntu5 500
        500 http://fr.archive.ubuntu.com/ubuntu impish/universe amd64 Packages
        100 /var/lib/dpkg/status

apt policy  ubuntu-restricted-extras

ubuntu-restricted-extras:
  Installé : 67
  Candidat : 67
 Table de version :
 *** 67 500
        500 http://fr.archive.ubuntu.com/ubuntu impish/multiverse amd64 Packages
        100 /var/lib/dpkg/status

the export is possible with Audacity in Appimage. It is the Debian/Ubuntu version wich faile.
So it is probably an option of compilation or a default parameter which cause this problem.

** Affects: audacity (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1978405

Title:
  Imossible to modifie and save an AAC (m4a) file

Status in audacity package in Ubuntu:
  New

Bug description:
  Audacity 2.4.2 in Ubuntu 21.10 and 22.04 (kinetic) has the same bug : impossible to export (save) an AAC file (m4a). The file could be open, read (play music), modify (for exemple cut a part of it). But it can't be save. 
  "FFmpeg : ERROR - encoding frame failed"

  After the message, Audacity loose is ability to read (play) the AAC
  file.

  Test on many AAC files, from differents origines : same problem.

  Ubuntu-restricted-extras and FFmpeg are instaled :

  apt policy ffmpeg (in impish)

  ffmpeg:
    Installé : 7:4.4-6ubuntu5
    Candidat : 7:4.4-6ubuntu5
   Table de version :
   *** 7:4.4-6ubuntu5 500
          500 http://fr.archive.ubuntu.com/ubuntu impish/universe amd64 Packages
          100 /var/lib/dpkg/status

  apt policy  ubuntu-restricted-extras

  ubuntu-restricted-extras:
    Installé : 67
    Candidat : 67
   Table de version :
   *** 67 500
          500 http://fr.archive.ubuntu.com/ubuntu impish/multiverse amd64 Packages
          100 /var/lib/dpkg/status

  the export is possible with Audacity in Appimage. It is the Debian/Ubuntu version wich faile.
  So it is probably an option of compilation or a default parameter which cause this problem.

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