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doc/filters: split item options which are not aliases.

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Clément Bœsch 2013-05-12 13:23:45 +02:00
parent 09d3449a8f
commit cd43a7e945
1 changed files with 58 additions and 29 deletions
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doc/filters.texi
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@ -2149,13 +2149,16 @@ corresponding value set for @option{luma_radius}.
The expressions can contain the following constants: The expressions can contain the following constants:
@table @option @table @option
@item w, h @item w
@item h
the input width and height in pixels the input width and height in pixels
@item cw, ch @item cw
@item ch
the input chroma image width and height in pixels the input chroma image width and height in pixels
@item hsub, vsub @item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1. pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table @end table
@ -2367,20 +2370,25 @@ The @var{out_w}, @var{out_h}, @var{x}, @var{y} parameters are
expressions containing the following constants: expressions containing the following constants:
@table @option @table @option
@item x, y @item x
@item y
the computed values for @var{x} and @var{y}. They are evaluated for the computed values for @var{x} and @var{y}. They are evaluated for
each new frame. each new frame.
@item in_w, in_h @item in_w
@item in_h
the input width and height the input width and height
@item iw, ih @item iw
@item ih
same as @var{in_w} and @var{in_h} same as @var{in_w} and @var{in_h}
@item out_w, out_h @item out_w
@item out_h
the output (cropped) width and height the output (cropped) width and height
@item ow, oh @item ow
@item oh
same as @var{out_w} and @var{out_h} same as @var{out_w} and @var{out_h}
@item a @item a
@ -2392,7 +2400,8 @@ input sample aspect ratio
@item dar @item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar} input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@item hsub, vsub @item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1. pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@ -2695,11 +2704,13 @@ pixels. Just set a rectangle covering the logo and watch it disappear
This filter accepts the following options: This filter accepts the following options:
@table @option @table @option
@item x, y @item x
@item y
Specify the top left corner coordinates of the logo. They must be Specify the top left corner coordinates of the logo. They must be
specified. specified.
@item w, h @item w
@item h
Specify the width and height of the logo to clear. They must be Specify the width and height of the logo to clear. They must be
specified. specified.
@ -2813,7 +2824,8 @@ Draw a colored box on the input image.
This filter accepts the following options: This filter accepts the following options:
@table @option @table @option
@item x, y @item x
@item y
Specify the top left corner coordinates of the box. Default to 0. Specify the top left corner coordinates of the box. Default to 0.
@item width, w @item width, w
@ -2951,7 +2963,8 @@ can be a color name (e.g. "yellow") or a string in the 0xRRGGBB[AA]
form (e.g. "0xff00ff"), possibly followed by an alpha specifier. form (e.g. "0xff00ff"), possibly followed by an alpha specifier.
The default value of @var{shadowcolor} is "black". The default value of @var{shadowcolor} is "black".
@item shadowx, shadowy @item shadowx
@item shadowy
The x and y offsets for the text shadow position with respect to the The x and y offsets for the text shadow position with respect to the
position of the text. They can be either positive or negative position of the text. They can be either positive or negative
values. Default value for both is "0". values. Default value for both is "0".
@ -2987,7 +3000,8 @@ If both @var{text} and @var{textfile} are specified, an error is thrown.
If set to 1, the @var{textfile} will be reloaded before each frame. If set to 1, the @var{textfile} will be reloaded before each frame.
Be sure to update it atomically, or it may be read partially, or even fail. Be sure to update it atomically, or it may be read partially, or even fail.
@item x, y @item x
@item y
The expressions which specify the offsets where text will be drawn The expressions which specify the offsets where text will be drawn
within the video frame. They are relative to the top/left border of the within the video frame. They are relative to the top/left border of the
output image. output image.
@ -3004,7 +3018,8 @@ following constants and functions:
@item dar @item dar
input display aspect ratio, it is the same as (@var{w} / @var{h}) * @var{sar} input display aspect ratio, it is the same as (@var{w} / @var{h}) * @var{sar}
@item hsub, vsub @item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1. pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@ -3057,7 +3072,8 @@ the height of the rendered text
@item text_w, tw @item text_w, tw
the width of the rendered text the width of the rendered text
@item x, y @item x
@item y
the x and y offset coordinates where the text is drawn. the x and y offset coordinates where the text is drawn.
These parameters allow the @var{x} and @var{y} expressions to refer These parameters allow the @var{x} and @var{y} expressions to refer
@ -3212,7 +3228,8 @@ Detect and draw edges. The filter uses the Canny Edge Detection algorithm.
The filter accepts the following options: The filter accepts the following options:
@table @option @table @option
@item low, high @item low
@item high
Set low and high threshold values used by the Canny thresholding Set low and high threshold values used by the Canny thresholding
algorithm. algorithm.
@ -4496,7 +4513,8 @@ The @var{lut} filter requires either YUV or RGB pixel formats in input,
The expressions can contain the following constants and functions: The expressions can contain the following constants and functions:
@table @option @table @option
@item w, h @item w
@item h
the input width and height the input width and height
@item val @item val
@ -5125,20 +5143,25 @@ The value for the @var{width}, @var{height}, @var{x}, and @var{y}
options are expressions containing the following constants: options are expressions containing the following constants:
@table @option @table @option
@item in_w, in_h @item in_w
@item in_h
the input video width and height the input video width and height
@item iw, ih @item iw
@item ih
same as @var{in_w} and @var{in_h} same as @var{in_w} and @var{in_h}
@item out_w, out_h @item out_w
@item out_h
the output width and height, that is the size of the padded area as the output width and height, that is the size of the padded area as
specified by the @var{width} and @var{height} expressions specified by the @var{width} and @var{height} expressions
@item ow, oh @item ow
@item oh
same as @var{out_w} and @var{out_h} same as @var{out_w} and @var{out_h}
@item x, y @item x
@item y
x and y offsets as specified by the @var{x} and @var{y} x and y offsets as specified by the @var{x} and @var{y}
expressions, or NAN if not yet specified expressions, or NAN if not yet specified
@ -5151,7 +5174,8 @@ input sample aspect ratio
@item dar @item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar} input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@item hsub, vsub @item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1. pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table @end table
@ -5480,16 +5504,20 @@ The values of the @var{w} and @var{h} options are expressions
containing the following constants: containing the following constants:
@table @option @table @option
@item in_w, in_h @item in_w
@item in_h
the input width and height the input width and height
@item iw, ih @item iw
@item ih
same as @var{in_w} and @var{in_h} same as @var{in_w} and @var{in_h}
@item out_w, out_h @item out_w
@item out_h
the output (cropped) width and height the output (cropped) width and height
@item ow, oh @item ow
@item oh
same as @var{out_w} and @var{out_h} same as @var{out_w} and @var{out_h}
@item a @item a
@ -5501,7 +5529,8 @@ input sample aspect ratio
@item dar @item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar} input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@item hsub, vsub @item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1. pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table @end table