It appears that you're trying to compile a gstreamer-1.0 example with an older version of gstreamer: 0.10.
GST_BUFFER_PTS
and GST_BUFFER_DTS
were introduced in gstreamer-0.11 and replaced GST_BUFFER_TIMESTAMP
available up to gstreamer-0.10.
Either use a newer gstreamer version or change GST_BUFFER_PTS
to GST_BUFFER_TIMESTAMP
.