[FFmpeg-trac] #6103(ffmpeg:new): When trying to set the audio track metadata language to 'und' (undefined) ffmpeg switches to 'eng' (English)

[FFmpeg]

#6103: When trying to set the audio track metadata language to 'und' (undefined)
ffmpeg switches to 'eng' (English)
-------------------------------------+-------------------------------------
             Reporter:  vsanchez     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:
             Keywords:  metadata,    |  unspecified
  iso639-2                           |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 When trying to set the audio track metadata language to 'und' (undefined)
 ffmpeg switches to 'eng' (English). However, according to ISO639-2 specs,
 the string 'und' is supported.

 How to reproduce:
 {{{
 % ffmpeg -i <VIDEO_FILE> -i <AUDIO_FILE> -c:v copy -map 0:a
 -metadata:s:a:0 language=und -metadata:s:a:0 title="Undetermined" -y
 out.mov
 ffmpeg version
 built on ffmpeg version 3.0.1 Copyright (c) 2000-2016 the FFmpeg
 developers
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6103>
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