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[Bug 1852936] [NEW] "Inappropriate audio coding" error when cdrecord attempts to use Audacity 16bit WAV files

 

Public bug reported:

The 16-bit WAV files that Audacity exports are unsuitable for simply
creating a redbook CD.  After exporting in format "WAV (Microsoft)
signed 16-bit PCM", the files are fed to "cdrecord", which then states
that the encoding is unusable.

If the files are non-compliant with the standard as written by
Microsoft, then this is a *bug*.  If the files are compliant but
Audacity simply lacks the encoding capability to meet Redbook standards,
then please treat this as a *feature request*.  FWIW, these are the
cdrecord-stated requirements for the Redbook standard:

"The file with data for this tracks should contain stereo, 16-bit
digital audio with 44100 samples/s. The byte order should be the
following: MSB left, LSB left, MSB right, LSB right, MSB left and so on.
The track should be a multiple of 2352 bytes."

*possible workaround*

Exporting as a custom ffmpeg pipe would perhaps work if someone knows
the exact settings.  The codecs and other options are quite cryptic, so
I could not test this personally.  If someone knows how to translate the
above-mentioned red book specs into settings in Audacity, please mention
it here.  Thanks!

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

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https://bugs.launchpad.net/bugs/1852936

Title:
  "Inappropriate audio coding" error when cdrecord attempts to use
  Audacity 16bit WAV files

Status in audacity package in Ubuntu:
  New

Bug description:
  The 16-bit WAV files that Audacity exports are unsuitable for simply
  creating a redbook CD.  After exporting in format "WAV (Microsoft)
  signed 16-bit PCM", the files are fed to "cdrecord", which then states
  that the encoding is unusable.

  If the files are non-compliant with the standard as written by
  Microsoft, then this is a *bug*.  If the files are compliant but
  Audacity simply lacks the encoding capability to meet Redbook
  standards, then please treat this as a *feature request*.  FWIW, these
  are the cdrecord-stated requirements for the Redbook standard:

  "The file with data for this tracks should contain stereo, 16-bit
  digital audio with 44100 samples/s. The byte order should be the
  following: MSB left, LSB left, MSB right, LSB right, MSB left and so
  on. The track should be a multiple of 2352 bytes."

  *possible workaround*

  Exporting as a custom ffmpeg pipe would perhaps work if someone knows
  the exact settings.  The codecs and other options are quite cryptic,
  so I could not test this personally.  If someone knows how to
  translate the above-mentioned red book specs into settings in
  Audacity, please mention it here.  Thanks!

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