pastbin you glxinfo and also run: GST_DEBUG=gldisplay:3 v4l2src .... Julien <div class="gmail_quote">2010/3/5 Alexandre Quessy <<a href="mailto:alexandre@quessy.net">alexandre@quessy.net</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello Julien and the list, <div class="im"> Julien Isorce wrote: > Hi, > > And if using gst-launch ? ( v4l2src ! ... ! glupload ! glfilterglass ! > glimagesink ) > </div>Without the glfilterglass element, it look ok. Here the output with the verbose flag on: <a href="http://pastebin.com/MrjEQ5Tc" target="_blank">http://pastebin.com/MrjEQ5Tc</a> If I add the glfilterglass element, the image is totally black. Here is the output : <a href="http://pastebin.com/pzcxfYRz" target="_blank">http://pastebin.com/pzcxfYRz</a> Here is the command I have issued. The first time, it was without the glfilterglass element. $ gst-launch -v v4l2src ! video/x-raw-yuv, format=$fourcc$I420, framerate=$fraction$25/1, width=640, height=480 ! ffmpegcolorspace ! glupload ! glfilterglass ! glimagesink I am not sure about how to read the actual frame rate, though. Any hint? Thanks, Alex <div><div></div><div class="h5"> > Julien > > 2010/3/3 Alexandre Quessy <<a href="mailto:alexandre@quessy.net">alexandre@quessy.net</a>> > >> Hello everyone, >> I have worked on a prototype of a pipeline that uploads a live video >> feed to an OpenGL texture and shares it with a context in SDL, >> starting from the tests/examples/sdlshare.c file in gst-plugins-gl. >> The source code can be found at >> <a href="http://bitbucket.org/aalex/toonloop1/src/tip/src/sdlshare.cpp" target="_blank">http://bitbucket.org/aalex/toonloop1/src/tip/src/sdlshare.cpp</a> and can >> be compiled with the autotools. >> (./autogen.sh && ./configure && make) >> >> It seems like the mesured framerate is consistently pretty slow. I get >> an average of 12 FPS on a Dual 2.2 GHz with the latest Ubuntu and a >> decent Nvidia graphic card. I obtained 30 FPS on a faster machine with >> a better V4L2-supported video capture card. >> >> Does someone have suggestions on how I could overcome this ? I would >> also prefer to have a framerate that's faster than the capture card's. >> 29.97 FPS is what NTSC gives me, whereas most projectors and monitors >> can do up to 60 FPS. I have tried to set the "sync" property of the >> fakesink element to FALSE, or TRUE, without success. Any other hint ? >> >> -- >> Alexandre Quessy >> <a href="http://alexandre.quessy.net/" target="_blank">http://alexandre.quessy.net/</a> >> >> >> ------------------------------------------------------------------------------ >> Download Intel&#174; Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> <a href="http://p.sf.net/sfu/intel-sw-dev" target="_blank">http://p.sf.net/sfu/intel-sw-dev</a> >> _______________________________________________ >> gstreamer-devel mailing list >> <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> >> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> >> > > </div></div>> ------------------------------------------------------------------------ <div><div></div><div class="h5">> > ------------------------------------------------------------------------------ > Download Intel&#174; Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > <a href="http://p.sf.net/sfu/intel-sw-dev" target="_blank">http://p.sf.net/sfu/intel-sw-dev</a> > > > ------------------------------------------------------------------------ > > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> ------------------------------------------------------------------------------ Download Intel&#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. <a href="http://p.sf.net/sfu/intel-sw-dev" target="_blank">http://p.sf.net/sfu/intel-sw-dev</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </div></div></blockquote></div>