[FFmpeg-trac] #8697(avformat:new): ffmpeg can't detect the language tag of mkv files after editing with mkvpropedit

[FFmpeg]

#8697: ffmpeg can't detect the language tag of mkv files after editing with
mkvpropedit
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             Reporter:  random404   |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mkv         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by random404):

 I just found that if you remove all tags with
 {{{
 mkvpropedit "input.mkv" --tags all:
 }}}

 then ffmpeg will the language tag

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Ticket URL: <https://trac.ffmpeg.org/ticket/8697#comment:6>
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