doc/filters: layout requirements for xstack

a0328f05 · Gyan Doshi · b3b7ba62 · a0328f05
Commit a0328f05 authored May 07, 2019 by Gyan Doshi
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filters.texi doc/filters.texi +3 -0

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--- 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.