textoverlay: add example for feeding from stdin

diff --git a/ext/pango/gsttextoverlay.c b/ext/pango/gsttextoverlay.c
index 6d15d3f..cf61a8a 100644 (file)
--- a/ext/pango/gsttextoverlay.c
+++ b/ext/pango/gsttextoverlay.c
@@ -65,6 +65,12 @@
  * Uh? What are you talking about?
  * I don't understand  (18-62s)
  * ]|
+ * one can also feed live text into the element
+ * |[
+ * gst-launch fdsrc fd=0 ! text/plain ! txt. videotestsrc ! \
+ * textoverlay  name=txt shaded-background=yes font-desc="Serif 40" wait-text=false ! \
+ * xvimagesink
+ * ]| This shows new text as entered on the terminal (stdin).
  * </para>
  * </refsect2>
  */