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| -rw-r--r-- | doc/filters.texi | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index b13d5f5cbd..063cc13605 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -903,9 +903,14 @@ testing purposes. @section crop -Crop the input video to @var{out_w}:@var{out_h}:@var{x}:@var{y}. +Crop the input video to @var{out_w}:@var{out_h}:@var{x}:@var{y}:@var{keep_aspect} -The parameters are expressions containing the following constants: +The @var{keep_aspect} parameter is optional, if specified and set to a +non-zero value will force the output display aspect ratio to be the +same of the input, by changing the output sample aspect ratio. + +The @var{out_w}, @var{out_h}, @var{x}, @var{y} parameters are +expressions containing the following constants: @table @option @item x, y |