Created attachment 63046 [details]
quick and dirty program altering the filesrc location

I am playing a few media files (.mp4 and .avi) sequentially, in a loop, by changing the "location" attribute of the "filesrc" element when the EOS signal for the preceding file is caught (in a watch added to the pipeline's bus) as usual: 

  if (msg_type & GST_MESSAGE_EOS) {
      g_print ("EOS message caught\n");   
      gst_element_set_state (pipeline, GST_STATE_PAUSED);
      gst_element_set_state (pipeline, GST_STATE_READY);
		
      k = (k+1) % N; // it goes in a loop

      g_object_set (filesrc, "location", mfile[k], NULL);
      gst_element_set_state (pipeline, GST_STATE_PLAYING);
  }

The pipeline is straightforward:

filesrc -> decodebin2 -> ffmpegcolorspace -> autovideosink

While in the 64-bit Ubuntu 12.04 (with the same gstreamer version) *ALL* media files are played *IN THE SAME* window, in the 64-bit Windows 7 and 64-bit SDK the same program spawns many (unlimitedly many) new windows, even without erasing the old windows, which clutter the desktop.

I believe this is an erratic behavior, while the Linux behavior (all media files are shown in the same window) is correct.

[I am attaching the program. It compiles both in Windows and Linux, but works differently.]

Maybe some parameter can be tuned, or another kind of video sink can be used instead?