[FFmpeg-trac] #7855(avformat:reopened): Last subtitle in MP4 is displayed forever

[FFmpeg]

#7855: Last subtitle in MP4 is displayed forever
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             Reporter:  fumoboy007    |                    Owner:  (none)
                 Type:  defect        |                   Status:  reopened
             Priority:  normal        |                Component:  avformat
              Version:  git-master    |               Resolution:
             Keywords:  mov mov_text  |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  0             |
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Comment (by Gregory Beauregard):

 As an aside did you find any workaround for this? `-fix_sub_duration` when
 converting to another format deletes the last subtitle line entirely;
 converting to ass/srt retains the long length of the last line. mpv is
 rendering it okay so maybe they have figured out a workaround?
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Ticket URL: <https://trac.ffmpeg.org/ticket/7855#comment:14>
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