<html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 09/07/2014 12:19 PM, Anton Olegovich wrote: </div> <blockquote cite="mid:540C7774.4050306@gmail.com" type="cite"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> I need to display video stream and some times, as required, to write the same stream to file. Now i'm in practic with manualy linking pads. I've got this code: <pre><code> gst_bin_add_many(GST_BIN(data->video_pipeline),udpsrc,rtph264depay,avdec_h264,/*videorate,*/clockoverlay,tee,queue_video_sink,queue_file_sink,NULL); if (!gst_element_link_filtered (udpsrc,rtph264depay,udpsrc_caps)) GST_ERROR ("Can't link udpsrc and rtph264depay with caps"); } if (!gst_element_link_many (rtph264depay,avdec_h264,/*videorate,*/clockoverlay,tee,NULL)){ GST_ERROR ("Can't link many to tee"); } gst_object_unref (G_OBJECT(videorate_src_pad));//Возможно получится ошибка с пямятью gst_caps_unref(videorate_caps);///Освобождаем caps #if 1 if(!gst_element_add_pad(tee,pad_surface_src)) GST_ERROR("Cant add pad to tee");</code></pre> </blockquote> This seems wrong, you shouldn't be adding pads to tee, but requesting pads from it and tee will create and add the pad itself. <blockquote cite="mid:540C7774.4050306@gmail.com" type="cite"> <pre><code> tee_src_pad_template = gst_element_class_get_pad_template(GST_ELEMENT_GET_CLASS(tee),"src_%u"); pad_surface_src = gst_element_request_pad(tee,tee_src_pad_template,NULL,NULL); if(!pad_surface_src){ g_printerr ("Can't obtain request pad src for tee.\n"); } pad_surface_sink = gst_element_get_static_pad(autovideosink,"sink"); if(!pad_surface_sink){ g_printerr ("Can't obtain request pad sink for autovideosink.\n"); } if (gst_pad_link (pad_surface_src,pad_surface_sink)!=GST_PAD_LINK_OK){</code></pre> </blockquote> <code>Did you check what was the error code? Which was the exact return here?</code> <blockquote cite="mid:540C7774.4050306@gmail.com" type="cite"> <pre><code> g_printerr ("Tee could not be linked.\n"); gst_object_unref (data->video_pipeline); return -1; } gst_object_unref(pad_surface_sink); #endif </code></pre> all pads are initialized, but gst_pad_link does not returns GST_PAD_LINK_OK. Do you know why? May be i can't to link tee and autovideosink directly, may be i need some queue? but queue do more latency. </blockquote> You might just be missing a videoconvert element. Does your pipeline work with gst-launch-1.0? <blockquote cite="mid:540C7774.4050306@gmail.com" type="cite"> <fieldset class="mimeAttachmentHeader"></fieldset> <pre wrap="">_______________________________________________ gstreamer-devel mailing list <a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </pre> </blockquote> <pre class="moz-signature" cols="72">-- Thiago Sousa Santos Senior Multimedia Engineer, Open Source Group Samsung Research America - Silicon Valley</pre> </body> </html>