Please run app with GST_DEBUG=*:4 environment variable and read carefully if there was no message indicating error prior to hang. Usually there's something that can point you to the right direction. Seeking is also buggy for some formats - see <a href="https://bugzilla.gnome.org/show_bug.cgi?id=766673">https://bugzilla.gnome.org/show_bug.cgi?id=766673</a> M. <div class="gmail_quote">08.07.2016 4:32 PM "Gottfried Haider" <<a href="mailto:gottfried.haider@gmail.com">gottfried.haider@gmail.com</a>> napisał(a): <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello all, I have a playbin-based pipeline of a local file. I don't want playback to begin immediately, but want to be able to e.g. seek to a specific position or retrieve the length of the file first. On Linux, I was able to to initially set my pipeline's state to paused, and - when a seek or similar was requested - wait for the asynchronous state change to complete, at which point the seek would succeed. On OS X, however, the asynchronous state change will never complete, and the pipeline hovers between ready and paused forever. Any idea what I am doing wrong here? This is with GStreamer 1.8.1. The setup of my pipeline would be here: <a href="https://github.com/gohai/processing-glvideo/blob/740d2f0d7b8222306d9723149496bce2c01be80a/src/native/impl.c#L437" rel="noreferrer" target="_blank">https://github.com/gohai/processing-glvideo/blob/740d2f0d7b8222306d9723149496bce2c01be80a/src/native/impl.c#L437</a> My seek method: <a href="https://github.com/gohai/processing-glvideo/blob/740d2f0d7b8222306d9723149496bce2c01be80a/src/native/impl.c#L602" rel="noreferrer" target="_blank">https://github.com/gohai/processing-glvideo/blob/740d2f0d7b8222306d9723149496bce2c01be80a/src/native/impl.c#L602</a> At this point, gst_element_get_state() will forever return GST_STATE_CHANGE_ASYNC with current state being GST_STATE_READY and pending state being GST_STATE_PAUSED. Any ideas would be greatly apprechiated. Best Gottfried _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>