doc/filters: layout requirements for xstack

6 years ago · a0328f05dc
parent b3b7ba623f
commit a0328f05dc
1 changed files with 3 additions and 0 deletions
--- a/doc/filters.texi
+++ b/doc/filters.texi
@ -18388,6 +18388,9 @@ where X is video input from which to take width or height.
 Multiple values can be used when separated by '+'. In such
 case values are summed together.

+For 2 inputs, a default layout of @code{0_0|w0_0} is set. In all other cases,
+a layout must be set by the user.
+
@item shortest
 If set to 1, force the output to terminate when the shortest input
 terminates. Default value is 0.