[FFmpeg-trac] #2067(avfilter:open): Support subtitles in libavfilter so seek is honored for subtitles filters (like hardsubbing)

[FFmpeg]

#2067: Support subtitles in libavfilter so seek is honored for subtitles filters
(like hardsubbing)
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             Reporter:  nikov        |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  normal       |                Component:  avfilter
              Version:  unspecified  |               Resolution:
             Keywords:  subtitles    |               Blocked By:
  seek                               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by Ricky1252):

 Ah, it works now, but for some reason all the frames are dropped, or
 nothing happens when I use setpts. Going to keep working on it hopefully
 can figure it out! If any one can shead some light that would be great! If
 i figure it out ill post back this is the command line im using now.


 ffmpeg -ss 60 -i abc.mkv -copyts -vf ass=/home/abc1.ass,setpts=PTS+60T -y
 abc.mp4

 the results are all Frames dropped. xD

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2067#comment:10>
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