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filters.texi: document interlaced scaling 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Mark Himsley 2011-10-24 12:45:14 +01:00 committed by Michael Niedermayer
parent 3ac1ade118
commit 3092509b08
1 changed files with 12 additions and 1 deletions
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@ -1802,7 +1802,7 @@ can be used to test the monowhite pixel format descriptor definition.
@section scale
Scale the input video to @var{width}:@var{height} and/or convert the image format.
Scale the input video to @var{width}:@var{height}[:@var{interl}=@{1|-1@}] and/or convert the image format.
The parameters @var{width} and @var{height} are expressions containing
the following constants:
@ -1850,6 +1850,17 @@ ratio of the input image.
The default value of @var{width} and @var{height} is 0.
Valid values for the optional parameter @var{interl} are:
@table @option
@item 1
force interlaced aware scaling
@item -1
select interlaced aware scaling depending on whether the source frames
are flagged as interlaced or not
@end table
Some examples follow:
@example
# scale the input video to a size of 200x100.