doc/filters: note default for elbg pal8 option

diff --git a/doc/filters.texi b/doc/filters.texi
index 7599646a5e03f9e22f6d7d77ea40cff5b7016264..64878e15da3d02cc5eff7fe7a886f206a7e9f147 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -11122,7 +11122,7 @@ will try to use a good random seed on a best effort basis.
 
 @item pal8
 Set pal8 output pixel format. This option does not work with codebook
-length greater than 256.
+length greater than 256. Default is disabled.
 @end table
 
 @section entropy