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-rw-r--r--doc/filters.texi7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index 6f26aeddc0..a30f101e6e 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -12990,6 +12990,13 @@ Allowed range is integer from 0 to 127.
If it is 0, value will be picked from horizontal @code{radius} option.
@end table
+@subsection Commands
+This filter supports same @ref{commands} as options.
+The command accepts the same syntax of the corresponding option.
+
+If the specified expression is not valid, it is kept at its current
+value.
+
@section mergeplanes
Merge color channel components from several video streams.