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Document the pad filter.

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Originally committed as revision 23052 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Stefano Sabatini 2010-05-07 12:52:46 +00:00
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doc/libavfilter.texi
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@ -177,6 +177,41 @@ input to the vflip filter.
Pass the source unchanged to the output.
@section pad
Add paddings to the input image, and places the original input at the
given coordinates @var{x}, @var{y}.
It accepts the following parameters:
@var{width}:@var{height}:@var{x}:@var{y}:@var{color}.
Follows the description of the accepted parameters.
@table @option
@item width, height
Specify the size of the output image with the paddings added. If the
value for @var{width} or @var{height} is 0, the corresponding input size
is used for the output.
The default value of @var{width} and @var{height} is 0.
@item x, y
Specify the offsets where to place the input image in the padded area
with respect to the top/left border of the output image.
The default value of @var{x} and @var{y} is 0.
@item color
Specify the color of the padded area, it can be the name of a color
(case insensitive match) or a 0xRRGGBB[AA] sequence.
The default value of @var{color} is ``black''.
@end table
@section scale
Scale the input video to @var{width}:@var{height} and/or convert the image format.