[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:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mp4,         |               Blocked By:
  mov_text                           |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by mkver):

 ISO/IEC 14496-17 is absolutely uninformative for this question:\\
 "[T]o  each  text  access  unit  a  single  time  stamp  applies. The time
 stamp assigned to a text access unit indicates the time at which the text
 access unit is to be presented  on  the  display."

 And the reason for this is that the carriage of timed text in mp4 is
 actually described in 14496-30, a document which doesn't seem to be
 available for free.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7855#comment:9>
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