[gstreamer-bugs] [Bug 503616] New: Let metadataparse extract image dimensions

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-bad | Ver: HEAD CVS
           Summary: Let metadataparse extract image dimensions
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: wouter at mind.be
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unversioned Enhancement
   GNOME milestone: Unspecified


bug 486659 comment 17:
Apart from emitting tags, it would also be useful to let an image metadata
parser change the caps. Specifically, width and height are always present.

A use case for this is multiplexing of motion JPEG. The source of the JPEG data
may not provide width and height properties in the caps, but multiplexers like
avimux and matroskamux demand these properties on their source pads:
souphttpsrc location="http://webcam/mjpeg" do-timestamp=true ! multipartdemux !
metadataparse ! matroskamux ! filesink location="webcam.mkv"


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