Maybe you are not giving full caps? What caps have you tried? <div class="gmail_quote">2010/9/6 wl2776 <<a href="mailto:wl2776@gmail.com">wl2776@gmail.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi all. I am writing a small function, making screenshots. I have studied several examples already, and now I'm trying to copy them to my application. My function gets the last displayed buffer from the videosink, then builds the pipeline: appsrc -> ffmpegcolorspace -> videoscale -> encoder -> filesink I have to save the screenshot to one of several formats, so I use one of several encoders: jpegenc, ffenc_bmp, pngenc, ffenc_tiff. All elements are created and added to the pipeline. The problem is that my function cannot set caps on the encoder's sink pad. Even following simple statements return false: caps=gst_caps_from_string("video/x-raw-rgb" ",bpp=24,depth=24" ); pad=gst_element_get_static_pad(enc,"sink"); rb=gst_pad_set_caps(pad,caps); rb is always 0 (FALSE) However, I need this, because my function also has to scale the screenshot, if new width and height are given. -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Cannot-set-caps-tp2528411p2528411.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/Cannot-set-caps-tp2528411p2528411.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. <a href="http://p.sf.net/sfu/intel-thread-sfd" target="_blank">http://p.sf.net/sfu/intel-thread-sfd</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> </blockquote></div> -- Your Sincerely Michael Joachimiak