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-rw-r--r--doc/filters.texi4
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index fcd3941ea0..630db433cb 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4329,8 +4329,8 @@ ffmpeg -i input -i logo1 -i logo2 -filter_complex 'overlay=10:H-h-10,overlay=W-w
@end example
@item
-Add a transparent color layer on top of the main video, WxH specifies
-the size of the main input to the overlay filter:
+Add a transparent color layer on top of the main video, @code{WxH}
+must specify the size of the main input to the overlay filter:
@example
color=color=red@@.3:size=WxH [over]; [in][over] overlay [out]
@end example