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-rw-r--r--doc/filters.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index 26c5b4db48..a5d5257b24 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -11431,10 +11431,14 @@ It can be used to add padding with zeros from the left.
@item gmtime
The time at which the filter is running, expressed in UTC.
It can accept an argument: a strftime() format string.
+The format string is extended to support the variable @var{%[1-6]N}
+which prints fractions of the second with optionally specified number of digits.
@item localtime
The time at which the filter is running, expressed in the local time zone.
It can accept an argument: a strftime() format string.
+The format string is extended to support the variable @var{%[1-6]N}
+which prints fractions of the second with optionally specified number of digits.
@item metadata
Frame metadata. Takes one or two arguments.