[FFmpeg-trac] #7905(avformat:new): ISO 639-2 Code "frm" Support

[FFmpeg]

#7905: ISO 639-2 Code "frm" Support
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             Reporter:  jeanhackman  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mov          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by jeanhackman):

 Replying to [comment:14 cus]:
 > There is a note however in the specs:
 > ''
 > Note: ISO language codes cannot be used for all elements of a QuickTime
 file. Currently, ISO language codes can be used only for user data text.
 All other elements, including  text tracks, must be specified using
 Macintosh language codes.
 > ''
 > So using extended language tags is the only way to support this?
 Looks to be so, yes. Thanks for adding links to the documentation.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7905#comment:15>
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