NEWS: info about x264 rc-behaviour and profile-limitter

NEWS

@@ -23,6 +23,10 @@ Audio filters:
 
 Encoders:
  * x264, add psy-rd parameter and change default settings
+ * x264, add profile-limitter sameway as x264.eve has, for example
+    #transcode{vcodec=h264,venc=x264{profile=baseline,level=1.2},vb=384,width=320,height=176}
+ * x264, defaults to crf=23 as x264.exe-does, if bitrate is given, uses ABR and if qp-value is set
+   uses CQP
  * MPEG2 transrate stream output removed
 
 Video Output: