[Bug 647856] New: [oggmux] Assumes that the first buffer can be used to detect the stream type

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=647856
  GStreamer | gst-plugins-base | git

           Summary: [oggmux] Assumes that the first buffer can be used to
                    detect the stream type
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: slomo at circular-chaos.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


This is not true for VP8 (at least), instead the first buffer of the
stream-header caps field should be used here. The VP8 ogg headers are not
pushed downstream at all, the first packet is a data packet.

gst-launch-0.10 videotestsrc num-buffers=100 ! vp8enc ! oggmux ! filesink
location=test.ogg
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Redistribute latency...
0:00:02.006371347 21990      0x1ee57c0 ERROR                 oggmux
gstoggmux.c:854:gst_ogg_mux_queue_pads:0x1edec00 mapper didn't recognise input
stream (pad caps: (NULL))

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