If you do... gst-launch -v videotestsrc ! ffmpegcolorspace ! ximagesink you will see all the details . <div class="gmail_quote">On Wed, Oct 31, 2012 at 5:16 AM, praveen <<a href="mailto:adi.praveen@gmail.com" target="_blank">adi.praveen@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have just started understanding the gstreamer basics and while going through some examples, I had few questions. Can some please explain me the following: In the pipeline, gst-launch videotestsrc ! ffmpegcolorspace ! ximagesink What cololorspace does videotestsrc produce here? What colorspace conversion is ffmpegcolorspace doing? What colorspace is ximagesink accepting and where is it presenting, Framebuffer?? Here we dont mention any properties for the plugin, but still how do they co-work? I am confused in understanding -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Basics-of-gstreamer-pipeline-tp4656741.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/Basics-of-gstreamer-pipeline-tp4656741.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>