<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.32.2"> </HEAD> <BODY TEXT="#000000" BGCOLOR="#ffffff"> Hi Peter, Thanks for the response, I've been away on holidays and just got back today. Here's what happens when I try that command: <A HREF="mailto:guest-XmvQAX@linaro-ubuntu-desktop">guest-XmvQAX@linaro-ubuntu-desktop</A>:~$ gst-launch-0.10 videotestsrc ! xvimagesink (gst-plugin-scanner:2857): GStreamer-CRITICAL **: gst_pad_template_new: assertion `c aps != NULL' failed (gst-plugin-scanner:2857): GStreamer-CRITICAL **: gst_element_class_add_pad_template : assertion `GST_IS_PAD_TEMPLATE (templ)' failed (gst-plugin-scanner:2857): GStreamer-CRITICAL **: gst_pad_template_new: assertion `c aps != NULL' failed (gst-plugin-scanner:2857): GStreamer-CRITICAL **: gst_element_class_add_pad_template : assertion `GST_IS_PAD_TEMPLATE (templ)' failed MAX resolution 1280x720 Setting pipeline to PAUSED ... ERROR: Pipeline doesn't want to pause. ERROR: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: Could not in itialise Xv output Additional debug info: xvimagesink.c(1443): gst_xvimagesink_get_xv_support (): /GstPipeline:pipeline0/GstXv ImageSink:xvimagesink0: No port available Setting pipeline to NULL ... Freeing pipeline ... <A HREF="mailto:guest-XmvQAX@linaro-ubuntu-desktop">guest-XmvQAX@linaro-ubuntu-desktop</A>:~$ Unfortunately I think I'm stuck with gstreamer 0.10 for now, since that's the latest version built for the platform I'm using (Ubuntu 12.04 on the Wandboard). Marlon On Fri, 2013-08-09 at 12:57 +0100, Peter Rennert wrote: <BLOCKQUOTE TYPE=CITE> does this work for you? gst-launch-0.10 videotestsrc ! xvimagesink (paste into a terminal) If you are getting started with gstreamer you should use gstreamer 1.0 instead. It is almost the same but better in some ways of its core architecture. Gstreamer 0.10 is maintained only for legacy reasons and because some plugins are not ported yet (if I am not mistaken). There is also an updated tutorial for gstreamer 1.0: <A HREF="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideooverlay.html">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideooverlay.html</A> On 08/08/2013 10:31 PM, Marlon Smith wrote: </BLOCKQUOTE> <BLOCKQUOTE TYPE=CITE> <BLOCKQUOTE TYPE=CITE> Hi everyone, I'm using Ubuntu 12.04 for the Wandboard, and I'm trying to get a Qt application to play a video with GStreamer. I've tried using the sample code from <A HREF="https://developer.gnome.org/gst-plugins-libs/0.10/gst-plugins-base-libs-gstxoverlay.html">https://developer.gnome.org/gst-plugins-libs/0.10/gst-plugins-base-libs-gstxoverlay.html</A> but I get the following errors when I run the application: (gst-plugin-scanner:2890): GStreamer-CRITICAL **: gst_pad_template_new: assertion `caps != NULL' failed (gst-plugin-scanner:2890): GStreamer-CRITICAL **: gst_element_class_add_pad_template: assertion `GST_IS_PAD_TEMPLATE (templ)' failed (gst-plugin-scanner:2890): GStreamer-CRITICAL **: gst_pad_template_new: assertion `caps != NULL' failed (gst-plugin-scanner:2890): GStreamer-CRITICAL **: gst_element_class_add_pad_template: assertion `GST_IS_PAD_TEMPLATE (templ)' failed MAX resolution 1920x1080 (gsttest:2889): GStreamer-CRITICAL **: gst_element_set_state: assertion `GST_IS_ELEMENT (element)' failed (gsttest:2889): GStreamer-CRITICAL **: gst_object_unref: assertion `((GObject *) object)->ref_count > 0' failed Does anyone know what could be causing these errors? I am new to GStreamer. Thanks! Marlon <PRE> _______________________________________________ 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">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</A> </PRE> </BLOCKQUOTE> <PRE> _______________________________________________ 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">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</A> </PRE> </BLOCKQUOTE> </BODY> </HTML>