Sony MVS-8000X System User Manual page 160

Multi format switcher system

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Key drop ON mode: The key fill/key source position moves downward by

Key drop OFF mode: The key fill/key source position does not move. When

In the key drop ON mode, a menu setting selects between the mode ("4H

mode") in which the key fill/key source position is lowered by four scan lines,

and the mode ("8H mode") in which the key fill/key source position is lowered

by eight scan lines.

When Fine Key is on, the edge width is forced to the range 0.00 to 4.00.

Note that in the following situations, the key drop mode is forcibly turned on.

• When the edge type is border, outline, or emboss

• When the edge type is normal with soft edge being on

• When Fine Key is on

To fix key fill / key source in key drop off mode

In the Edge menu, switch frame delay mode on (see page 182).

Regardless of the fine key and edge type settings, key fill and key source are

fixed in key drop off mode. In this mode key image has a one-frame delay.

This function uses the resizer, and therefore the normal effect of the setting is

not obtained while using DME wipe or other effect that uses the resizer.

When a border, drop border, or shadow modifier is selected, you can select a

signal to fill these edge effects.

The edge fill may be either the signal from the dedicated color matte generator,

or the signal currently selected on the utility 1 bus.

In the case of an outline, there is no edge fill signal selection, because the key

fill signal fills the outline, and the rest of the image remains as the background.

For the emboss effect, in place of the edge fill signal, the emboss fill matte 1

and emboss fill matte 2 signals are used.

A mask is used to inhibit the effect of a key over a part of the image. This

allows parts of the background which would otherwise be keyed to be

protected, or to correct the key if it is not of the desired shape.

For details of masking operations, see "Masks" (pages 185 and 205).

eight scan lines or four scan lines. When a drop border or shadow is

selected, it is possible to apply a border to the top edge of the key.

a drop border or shadow is selected, it is not possible to apply a border to

the top edge of the key.