[Bug 768758] New: mpegtsbase: problems with programs with pcr_pid == 0x1fff

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=768758

            Bug ID: 768758
           Summary: mpegtsbase: problems with programs with pcr_pid ==
                    0x1fff
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: m.olbrich at pengutronix.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 331383
  --> https://bugzilla.gnome.org/attachment.cgi?id=331383&action=edit
mpegtsbase: ignore programs with pcr_pid=0x1fff

What's the correct way to handle programs with pcr_pid == 0x1fff?

I've come across this stream:
http://filmrommet.no/film/playlist.m3u8?id=12450%20TR=1%20type=m3u8

Each fragment starts with a video only program with pcr_pid=0x1fff. I think
that's just a cover image or something like that.
Next comes the actual program with audio and video.

GStreamer tries to switch programs every time. Without
e3f5ccb3333f3b22c41e59cf78e4343c99187009 ("tsdemux: Change the pad naming
scheme to include a generation ID") that breaks completely. With that change
the appearing and disappearing audio clock seems to cause various problems. And
even with a forced system clock playback is anything but smooth.

I've attached a patch to ignore programs with pcr_pid == 0x1fff. With this
playback looks good. But I don't know enough about the spec to know if this is
the correct fix.

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