[Bug 744469] New: No data after prerolling when different PTS in one program

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=744469

            Bug ID: 744469
           Summary: No data after prerolling when different PTS in one
                    program
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: andreas at schulerdev.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

When tsdemux shall demux a program with streams that have different pts,
sometimes there are non data output after prerolling phase. Results in non
playing pipelines.

It's simple to test with the commands:
filesrc location=phoenix_tail_425.ts ! tsparse ! tsdemux name=dm dm. ! identity
dump=true ! mpegvideoparse ! fakesink
filesrc location=phoenix_tail_425.ts ! tsparse ! tsdemux name=dm dm. ! identity
dump=true ! mpegaudioparse ! fakesink

The bug is triggert only sometimes, when the stream with bigger(?) PTS is first
found. As attachement one stream which triggers the bug(425) and another one
that differs only in that, that the first packet is removed(426). With the
second it works perfectly.

The problematic stream is the private stream. When I patch tsdemux to ignore
private streams it works with both.

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