[FFmpeg-trac] #10516(ffmpeg:new): SSA/ASS PlayResX/PlayResY not used

[FFmpeg]

#10516: SSA/ASS PlayResX/PlayResY not used
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             Reporter:  nanone      |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  ffmpeg
              Version:  5.1.3       |               Resolution:
             Keywords:  libass ass  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by nanone):

 I've just found out that I need to explicetely supply `original_size` to
 the `subtitles` like so:

 {{{
 ffmpeg -loglevel debug -i test-video.mkv -map 0:0 -filter_complex
 subtitles='test-video.mkv':original_size=hd720:si=0 -c:v libx264 -crf 18
 -movflags faststart test-video.mp4
 }}}

 This works and I realise, instead this "issue" could be turned into a
 feature request. That is, if it's possible to let ffmpeg automatically
 determine the `original_size` based on`PlayResX/Y`?
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Ticket URL: <https://trac.ffmpeg.org/ticket/10516#comment:1>
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