[FFmpeg-trac] #6021(avcodec:new): tx3g / mov_text subtitles are not encoded correctly in some specific cases

[FFmpeg]

#6021: tx3g / mov_text subtitles are not encoded correctly in some specific cases
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             Reporter:  erikbs         |                    Owner:
                 Type:  defect         |                   Status:  new
             Priority:  normal         |                Component:  avcodec
              Version:  git-master     |               Resolution:
             Keywords:  utf8 mov_text  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  0
Analyzed by developer:  0              |
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Comment (by CoRoNe):

 I'm a complete novice when it comes to compiling stuff from source, but in
 the end, with the help of [https://github.com/rdp/ffmpeg-windows-build-
 helpers ffmpeg-windows-build-helpers] I've tested
 [https://trac.ffmpeg.org/ticket/6021#comment:2 your suggested patch],
 ''erikbs'', but it does nothing for my issue, because my Samsung SMART TV
 still randomly shows the subtitle lines. Again, the same subtitles muxed
 with MP4Box and all lines are shown.
 I guess I'll mux to Matroska for the time being.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6021#comment:10>
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