[FFmpeg-trac] #9731(avformat:new): Dashdec reports wrong duration when playing a 32 period dash

[FFmpeg]

#9731: Dashdec reports  wrong duration when playing a 32 period dash
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             Reporter:  luckysk   |                     Type:  defect
               Status:  new       |                 Priority:  critical
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Run following command:

 mpv https://rolandjon.github.io/test-
 streams/dash-32-period/dash_32period.mpd

 dashdec reports a duration of 45S. In fact, the content has 5 minutes, and
 it has 32 periods.
 ----
 [   3.883][t][ffmpeg/demuxer] dash: stream 0: start_time: 0.12 duration:
 NOPTS
 [   3.883][t][ffmpeg/demuxer] dash: stream 1: start_time: 0 duration:
 NOPTS
 [   3.883][t][ffmpeg/demuxer] dash: format: start_time: 0 duration: 45
 (estimate from stream) bitrate=6 kb/s
 [   3.884][t][ffmpeg/demuxer] dash: After avformat_find_stream_info() pos:
 38117 bytes read:38117 seeks:0 frames:82
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Ticket URL: <https://trac.ffmpeg.org/ticket/9731>
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