PACKET_SYNC       302 gst/gstpluginloader.c   put_packet (l, PACKET_SYNC, 0, NULL, 0);
PACKET_SYNC       813 gst/gstpluginloader.c     case PACKET_SYNC:
PACKET_SYNC       816 gst/gstpluginloader.c         put_packet (l, PACKET_SYNC, tag, NULL, 0);