[gstreamer-bugs] [Bug 618916] New: [playbin2] bad text-sink support (vobsub decoding, caps information)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=618916
  GStreamer | gst-plugins-base | unspecified

           Summary: [playbin2] bad text-sink support (vobsub decoding,
                    caps information)
    Classification: Desktop
           Product: GStreamer
           Version: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: andreas.frisch at multimedia-labs.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


playbin2 doesn't support automatic pluggin of a dvdsubdec element in case the
custom text-sink wants video/x-raw-rgb input caps.

furthmore, there is no way of querying subtitle "types" at the beginning of the
playback. on GST_MESSAGE_ASYNC_DONE, all subtitle streams are PRESENT but may
have no caps set yet. using notify::caps only tells me about the one selected
stream but not about the others, text-tags only hold information about the
language.
in my application, i want to display a list of all available subtitle streams,
including information about their type (whether it's plain-text, ssa/ass/pango
or vobsubs etc.)


dvdsubdec is not being plugged by playbin2 even when patching its rank to be
marginal instead of none.

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