[FFmpeg-trac] #5678(avformat:open): DVD Subtitles broken in 3.1

[FFmpeg]

#5678: DVD Subtitles broken in 3.1
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             Reporter:  FernetMenta  |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  dvdsub       |               Blocked By:
  codecpar regression                |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by fritsch):

 Here is a sample, that shows the issue:
 https://dl.dropboxusercontent.com/u/3669512/temp/Die%20Hard%202.tgz

 When you reach VTS_01_0.VOB you hit the menu. Before 3.1 the
 AVFormatContext had all the available streams, after 3.1 bump the relevant
 are missing.

 Visible issue: Selectors are missing (You don't see the extra options
 selected).

 We are still debugging and might have different results later on. So far
 thx much for your help.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5678#comment:13>
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