ViewCast 450E Brightness, Contrast, Hue, Saturation, Sharpness, Gamma, White Balance, Gain, Auto

Osprey 240e/450e User Guide

The Video Proc Amp tab has the following controls.

Brightness and	These terms are used for contrast ratio. It’s a measure of a display system, defined as
Contrast	the ratio of the brightest color (white) to that of the darkest color (black) that the
	system can produce. A high contrast ratio is a desired aspect of any display, but with
	the various methods of measurement for a system or its part, different measured
	values can sometimes produce similar results. The control exists in the event you
	need to change the ratio of an incoming signal.
Hue	Hue adjustment only functions for NTSC video. It sets the predominance of color,
	classed as red, yellow, green, blue or an intermediate color based on a contiguous
	pair of these colors
Saturation	In color theory, saturation or purity refers to the intensity of a specific hue. A highly
	saturated hue has a vivid, intense color, while a less saturated hue appears more
	muted and grey. With no saturation at all, the hue becomes a shade of grey. You are
	able to adjust the saturation level in the event it is altered by a video feed.
Sharpness	This slider has eight positions corresponding to eight hardware filter settings.
	Generally, the positions to the left result in smoother video, the positions to the right
	result in sharper video. Since each step engages a different combination of discrete
	filters, some steps may result in slight differences while other steps may result in
	large differences. The range is 0 to 7.
Gamma	You will rarely need to use this control. In simple terms, the input of a feed from a
	device into your card may not match the digital output on your screen. The gamma
	control enables you to balance the red, blue, and green from the input to output
	within the normal range of people’s perceptions.
White Balance	This field is an unused DirectShow feature and is not selectable.
Backlight Comp	This field is an unused DirectShow feature and is not selectable.
Gain	This field is an unused DirectShow feature and is not selectable.
Color Enable	This field is an unused DirectShow feature and is not selectable.
PowerLine	This field is an unused DirectShow feature and is not selectable.
Frequency
(Anti Flicker)
Default	Click Default to return to the default settings.
Auto	This field is an unused DirectShow feature and is not selectable.
OK	Click OK to accept the settings.
Cancel	Click Cancel to close the window.
Apply	Click Apply to apply the settings.
Help	Click Help to access the user guide.

For all of the Video Proc Amp controls the driver maintains one setting per Osprey device. It does not maintain individual settings for each input or type of input.

When you change the video standard or input you will not see changes in the slider controls – such as the Hue button becoming disabled – until the driver properties dialog is closed and re-entered.

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