[FFmpeg-trac] #8522(avformat:new): DASH start segment number calculation is wrong for fragment_duration mode

[FFmpeg]

#8522: DASH start segment number calculation is wrong for fragment_duration mode
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             Reporter:  onitake    |                    Owner:
                 Type:  defect     |                   Status:  new
             Priority:  important  |                Component:  avformat
              Version:  4.2        |               Resolution:
             Keywords:  dash mpd   |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  0          |
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Comment (by onitake):

 Clarification:

 > When I ran a test on Monday (when the stream was set up), I ended up
 with a request for segment 263604602, while the DASH-IF reference player
 (​https://reference.dashif.org/dash.js/v2.9.1/samples/dash-if-reference-
 player/index.html) requested segment 263557058, which is correct and
 works.
 >
 > I ran the same test today and got 263605211 on ffmpeg and 263588024 on
 the DASH-IF player.

 The segment that is requested by the DASH-IF player is correct and works.
 ffmpeg requests segments that are not available on the CDN.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8522#comment:1>
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