Attribute: contrast
Required: no
Default: zero
Range: floating point number from -2 to 5
Adjusts the tonal contrast in the underlying video. Positive values
cause the video to appear sharper, while negative values flatten it out.
The special value of -2 causes the image to become negatized, inverting
both the hue and luminance.
Attributes
editable: comma delimited list of property names
brightness: floating point number from -255 to 255
brightnessfade: floating point number from -255 to 255
contrast: floating point number from -2 to 5
contrastfade: floating point number from -2 to 5
hue: floating point number from zero to 360 (degrees)
huefade: floating point number from zero to 360 (degrees)
id: single word string identifier, starting with a letter
fade: comma delimited pairs of percentages
length: floating point number (frames)
saturation: floating point number from -3 to 3
saturationfade: floating point number from -3 to 3
symbol: a valid SWF URL, followed by an ampersand and class name
type: the string 'effect'
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