Hi,

I am new to gstreamer, i downloaded the package and compiled it sucessfully but while running a sample application i am getting some errors. I am using UBUNTU 10.04

And the process i followed to do all these is

Installed the package gstreamer-1.0.5.tar.xz by
>> tar -xf gstreamer-1.0.5.tar.xz
>> cd gstreamer-1.0.5
>> ./configure
>> make
>> sudo make install

And the Plugins i installed are gst-plugins-base-1.0.5, gst-plugins-good-1.0.5

The application i am running is

#include <gst/gst.h>

int main(int argc, char *argv[]) {
GstElement *pipeline;
GstBus *bus;
GstMessage *msg;

/* Initialize GStreamer */
gst_init (&argc, &argv);

/* Build the pipeline */
pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);

/* Start playing */
gst_element_set_state (pipeline, GST_STATE_PLAYING);

/* Wait until error or EOS */
bus = gst_element_get_bus (pipeline);
msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));

/* Free resources */
if (msg != NULL)
gst_message_unref (msg);
gst_object_unref (bus);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return 0;
}

i cross compiled the application as

$libtool --mode=link gcc `pkg-config --cflags --libs gstreamer-1.0` -o tut1 tut1.c

It displayed

libtool: link: gcc -pthread -I/usr/local/include/gstreamer-1.0 -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include -pthread -o tut1 tut1.c -L/usr/local/lib /usr/local/lib/libgstreamer-1.0.so /usr/local/lib/libgobject-2.0.so /usr/local/lib/libgmodule-2.0.so /usr/local/lib/libgthread-2.0.so -lrt /usr/local/lib/libglib-2.0.so -pthread

$./tut1

I am getting the errors as

(tut1:9112): GStreamer-CRITICAL **: gst_element_set_state: assertion `GST_IS_ELEMENT (element)' failed

(tut1:9112): GStreamer-CRITICAL **: gst_element_get_bus: assertion `GST_IS_ELEMENT (element)' failed

(tut1:9112): GStreamer-CRITICAL **: gst_bus_timed_pop_filtered: assertion `GST_IS_BUS (bus)' failed

(tut1:9112): GStreamer-CRITICAL **: gst_object_unref: assertion `object != NULL' failed

(tut1:9112): GStreamer-CRITICAL **: gst_element_set_state: assertion `GST_IS_ELEMENT (element)' failed

(tut1:9112): GStreamer-CRITICAL **: gst_object_unref: assertion `object != NULL' failed

Please suggest me how to run the application successfully

Hi and welcome
Now you are aware that Ubuntu 10.04 is not supported any longer
The current is Ubuntu 12.10

also as to posting
Please use the BB "code tags"
Example :
the older gstreamer will be in the old Ubuntu repos

Are you 100% sure it built without errors and with all the options it needs ?
See the README and the INSTALL files in the source code for the needed prerequisites and see
for configure options

for that current version
i am betting that a LOT of ubuntu 10 will need newer versions of EVERY prerequisites to be built and installed "out of the tree "
and manually linked to that new version

basically
it will be easier to install Ubuntu 12.10
and use that gstreamer
than to build gstreamer-1.0.5.tar.xz and get it working on 10.04

Hi johnVV

Thanks for your reply..Now I installed gstreamer-1.0.5.tar.xz in Ubuntu 12.10 in the same process previously which i followed and run the same appllication but still i am getting the same errors. can you please guide me how can i run this application successfully.

Hi,
I don't know if you are still interested but I found an easy fix is to replace playbin2 with playbin.

Then it works.

Cheers
Ben