[FFmpeg-trac] #3375(ffmpeg:new): FFmpeg doesn't set the right language code for Dutch tracks

[FFmpeg]

#3375: FFmpeg doesn't set the right language code for Dutch tracks
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             Reporter:  Nemesis7     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:
             Keywords:  language     |  unspecified
  code                               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Summary of the bug: When remuxing an .mkv file with Dutch audio/subtitle
 tracks to an .mp4 file, the language code is not set properly, which
 results in an "unknown" language in programs such as VLC and Subler. After
 creating a bug report on the Subler site, the developer replied the
 following:

 {{{
 you need to use an ISO-639-2/T language code as specified in the mp4
 specifications. ISO-639-2/B languages code are invalid.
 }}}

 So please make sure FFmpeg uses the right language codes for mp4 files
 i.e. set the language code for Dutch tracks to 'nld' instead of 'dut'.

 How to reproduce:
 {{{
 ffmpeg -i sample.mkv -map 0 sample.mp4
 ffmpeg version 2.0.2
 built on Oct  8 2013 20:26:27 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3375>
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