From d519b189557d91e2b4cb82d9a502daa0feab4929 Mon Sep 17 00:00:00 2001 From: greg Luce Date: Thu, 20 Jun 2019 12:08:04 -0400 Subject: [PATCH] vf_drawtext documentation additions and correction Added a missing "to" Documented the pict_type option already available in vf_drawtext Added information about the metadata expansion option to avoid confusion Written with the help of Gyan and kepstin --- doc/filters.texi | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/doc/filters.texi b/doc/filters.texi index 3313f96bd4..8fb9876629 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -8962,7 +8962,10 @@ the width of the rendered text the x and y offset coordinates where the text is drawn. These parameters allow the @var{x} and @var{y} expressions to refer -each other, so you can for example specify @code{y=x/dar}. +to each other, so you can for example specify @code{y=x/dar}. + +@item pict_type +A 1 character description of the current frame's picture type. @end table @anchor{drawtext_expansion} @@ -9031,6 +9034,13 @@ The first argument is mandatory and specifies the metadata key. The second argument is optional and specifies a default value, used when the metadata key is not found or empty. + +Available metadata can be identified by inspecting entries +starting with TAG included within each frame section +printed by running @code{ffprobe -show_frames}. + +String metadata generated in filters leading to +the drawtext filter are also available. @item n, frame_num The frame number, starting from 0. -- 2.22.0.windows.1