[FFmpeg-trac] #8301(undetermined:new): Burning in Thai subtitles has errors

[FFmpeg]

#8301: Burning in Thai subtitles has errors
-------------------------------------+-------------------------------------
             Reporter:  0x42h        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  thai,        |               Blocked By:
  subtitles, burn, fails             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 When burning in subtitles with -vf subtitle=, subtitles in Thai language
 position the accents wrongly. Instead of the accents being places below or
 above the character, they are placed in the next font character slot. See
 attachment.

 Subtitles can be translated to Thai language here: http://translate-
 subtitles.com

 How to reproduce:
 {{{
 % ffmpeg -i somevid.mp4 -vf subtitle=sub.srt output.mp4
 ffmpeg version: any
 built on ... any
 }}}
 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/8301>
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