gstreamer example

tutorial

basic-tutorial-1.c

#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 ("playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/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, 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; 
} 

ref

https://gstreamer.freedesktop.org/documentation/tutorials/basic/hello-world.html?gi-language=c