setpts: add FRAME_RATE constant

[ffmpeg] / doc / filters.texi

diff --git a/doc/filters.texi b/doc/filters.texi
index d9874b6be6094c9779e44004a0d1d723dd7f0f8c..9804c0e29d10fe3d1cbf05f825770a02e80c28c5 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -209,6 +209,9 @@ The expression is evaluated through the eval API and can contain the following
 constants:
 
 @table @option
+@item FRAME_RATE
+frame rate, only defined for constant frame-rate video
+
 @item PTS
 the presentation timestamp in input