Addresses ticket #6033.
Also document valid value ranges for luma_amount and chroma_amount.
Signed-off-by: Lou Logan <l...@lrcd.com>
---
doc/filters.texi | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 0ec7d652a3..83a6823f52 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15236,14 +15236,13 @@ Set the luma matrix vertical size. It must be an odd
integer between 3
and 23. The default value is 5.
@item luma_amount, la
-Set the luma effect strength. It must be a floating point number, reasonable
-values lay between -1.5 and 1.5.
+Set the luma effect strength. It must be a floating point number between
+-2.0 and 5.0. Reasonable values lay between -1.5 and 1.5. Default value
+is 1.0.
Negative values will blur the input video, while positive values will
sharpen it, a value of zero will disable the effect.
-Default value is 1.0.
-
@item chroma_msize_x, cx
Set the chroma matrix horizontal size. It must be an odd integer
between 3 and 23. The default value is 5.
@@ -15253,18 +15252,20 @@ Set the chroma matrix vertical size. It must be an
odd integer
between 3 and 23. The default value is 5.
@item chroma_amount, ca
-Set the chroma effect strength. It must be a floating point number, reasonable
-values lay between -1.5 and 1.5.
+Set the chroma effect strength. It must be a floating point number between
+-2.0 and 5.0. Reasonable values lay between -1.5 and 1.5. Default value
+is 0.0.
Negative values will blur the input video, while positive values will
sharpen it, a value of zero will disable the effect.
-Default value is 0.0.
-
@end table
All parameters are optional and default to the equivalent of the
-string '5:5:1.0:5:5:0.0'.
+string @samp{5:5:1.0:5:5:0.0}.
+
+Note that the sum of @code{lx}+@code{ly} or @code{cx}+@code{cy} must
+not exceed a value equal to or greater than 26.
@subsection Examples
--
2.15.0
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