@@ -837,7 +837,7 @@ In particular may be used in combination with the @file{ffmpeg} option

 @var{force_key_frames} may not be set accurately because of rounding

 issues, with the consequence that a key frame time may result set just

 before the specified time. For constant frame rate videos a value of

-1/2*@var{frame_rate} should address the worst case mismatch between

+1/(2*@var{frame_rate}) should address the worst case mismatch between

 the specified time and the time set by @var{force_key_frames}.

 @item segment_times @var{times}