[FFmpeg-trac] #9935(undetermined:new): glyphs is broken at drawtext filter

FFmpeg trac at avcodec.org
Thu Sep 22 08:47:54 EEST 2022

#9935: glyphs is broken at drawtext filter
             Reporter:  zenix        |                     Type:  defect
               Status:  new          |                 Priority:  wish
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  font         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Summary of the bug:
 glyphs is broken at drawtext filter
 when a sentence is mixed other character set
 (ex. english+korean)
 I ran ffmpeg on windows 10

 However I found the solution at libass library
 You have to set the substitution font by FcConfigSubstitute function when
 ffmpeg sets font on drawtext filter.

 How to reproduce:
 % ffplay -i anything -vf "[in]drawtext=font='Arial':text='ffmpeg 에프에프
 ffmpeg version 4.3
 built on ... msys2
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.
Ticket URL: <https://trac.ffmpeg.org/ticket/9935>
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