Make clear in the doxy that this is a *video* filter.

Originally committed as revision 20298 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavfilter/vf_null.c b/libavfilter/vf_null.c
index ad4095f..9ddad6a 100644 (file)
--- a/libavfilter/vf_null.c
+++ b/libavfilter/vf_null.c
@@ -18,7 +18,7 @@
 
 /**
  * @file libavfilter/vf_null.c
 
 /**
  * @file libavfilter/vf_null.c

- * null filter
+ * null video filter

  */
 
 #include "avfilter.h"
  */
 
 #include "avfilter.h"