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<p class="MsoNormal">I need to display a PNG image using gstreamer.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">From reading the documentation, this command should work:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">gst-launch-1.0 -v filesrc location=filename.png ! pngdec ! imagefreeze ! 'video/x-raw,format=(string)YUY2,width=640,height=480,framerate=(fraction)30/1' ! waylandsink<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, when I enter the command, I get the following output on the console:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Setting pipeline to PAUSED ...<o:p></o:p></p>
<p class="MsoNormal">Pipeline is PREROLLING ...<o:p></o:p></p>
<p class="MsoNormal">/GstPipeline:pipeline0/GstPngDec:pngdec0.GstPad:src: caps = video/x-raw, format=(string)RGBA, width=(int)640, height=(int)384, interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-aspect/mixed-mono,
pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)sRGB, framerate=(fraction)0/1<o:p></o:p></p>
<p class="MsoNormal">ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal data stream error.<o:p></o:p></p>
<p class="MsoNormal">Additional debug info:<o:p></o:p></p>
<p class="MsoNormal">../../../../git/libs/gst/base/gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstFileSrc:filesrc0:<o:p></o:p></p>
<p class="MsoNormal">streaming stopped, reason not-negotiated (-4)<o:p></o:p></p>
<p class="MsoNormal">ERROR: pipeline doesn't want to preroll.<o:p></o:p></p>
<p class="MsoNormal">Setting pipeline to NULL ...<o:p></o:p></p>
<p class="MsoNormal">Freeing pipeline ...<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note that the following command works:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">gst-launch-1.0 -v videotestsrc ! 'video/x-raw,format=(string)YUY2,width=640,height=480,framerate=(fraction)30/1' ! waylandsink<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">How do I display the PNG file without getting the “Internal data stream error”?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Victor<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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