[Bug 645006] New: [mpegtsmux] in m2ts-mode, PAT is written only once

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Thu Mar 17 04:02:02 PDT 2011

  GStreamer | gst-plugins-bad | git

           Summary: [mpegtsmux] in m2ts-mode, PAT is written only once
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: andreas.frisch at multimedia-labs.de
         QAContact: gstreamer-bugs at lists.freedesktop.org
      GNOME target: ---
     GNOME version: ---

this resulted in hardware demuxer sometimes not being able to start filtering
because it didn't see the first and only appearing PAT in the m2ts stream
so i debugged and found two reasons for the PAT only being written once
the first is in the underlying tsmuxer.c where the PAT is only generated if a
flag mux->pat_changed is set but this flag is becoming TRUE again after
the first problem is that in the new_packet_cb, every very first packet with a
new_pcr gets gets lost because it's not being put into the adapter. since PAT
is usually only one TS packet long and has a new_pcr, every PAT except for the
first is affected (since the first_pcr packet is directly pushed without
i hope i did this patch right and i'd appreciate it if you could review it.

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