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