[gstreamer-bugs] [Bug 323896] New: pngdec/videomixer negotation problem in 0.10

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-plugins-good | Ver: HEAD CVS

           Summary: pngdec/videomixer negotation problem in 0.10
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: thomas at apestaart.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
                CC: julien at moutte.net,wim at fluendo.com,all-
                    bugs at bugzilla.gnome.org


This pipeline works in 0.8, but not in 0.10:

gst-launch-0.10 filesrc location=/tmp/overlay.png name=source ! pngdec !
alphacolor ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink videotestsrc !
ffmpegcolorspace ! mix.
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
ERROR: from element /pipeline0/pngdec0: Internal data stream error.
Additional debug info:
gstpngdec.c(439): gst_pngdec_task: /pipeline0/pngdec0:
stream stopped, reason not-negotiated
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
FREEING pipeline ...

repeat runs alternate between videotestsrc and pngdec triggering the error.

This pipeline is used to overlay images in flumotion.

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