[gstreamer-bugs] [Bug 637686] New: [jpegenc] Drop fixed caps from pad

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=637686
  GStreamer | gst-plugins-good | unspecified

           Summary: [jpegenc] Drop fixed caps from pad
    Classification: Desktop
           Product: GStreamer
           Version: unspecified
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: thiago.sousa.santos at collabora.co.uk
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Currently jpegenc get_allowed_caps returns a caps with the current
width/height/framerate and this makes upstream elements wanting to
renegotiate to be forced to use that. This is particularly a problem
on camerabin2 that might want to change resolution after each capture.

Given that each jpeg image is independent from another, we should drop this
and, if this restriction is required because of a downstream muxer, it should
be the muxer's job to do the 'fixed caps' restriction.

I have writen a small test case to show the problem.

If I'm wrong about this, a solution is needed for camerabin2 to work.

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