JVC KM-H3000E, KM-H2500U manual Modifying Split Keys, To modify the appearance of a Split Key

increasingly saturated and vivid. Decreasing the Gain decreases the saturation until the image is black and white.

The Spill effect allows you to handle chroma key spill where the background color (the color being removed) spills onto the key object.

To adjust the Edge, Shadow, Gain, and Spill:

To create a Split Key:

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1.Select the key you wish to modify (ensure it is set as a Chroma key).

2.If you have already assigned a Chroma Key to one of the other keyers and the Chroma Key share mode is set to FLOAT or ASK, you are asked whether you want to steal the Chroma Key resource to use on the new key. You can choose from the following:

•Press the Confrm knob to steal the Chroma Key resource for the new key. The old Chroma Key is taken off-air and converted to an Auto-Select Key.

•Press the Cancel knob to cancel the new Chroma Key and leave the resource with the key it is currently assigned to.

1.Select a source on the Key/Aux bus to act as the video fill (the source can be either an Auto-Select Key or a Self Key).

2.Press and hold the AUTO SEL button.

3.Select a source on the Key/Aux bus to act as the key alpha.

Note:

•Split Keys are initially created with clip set to 50% and gain set to 50%.

•While holding the AUTO SEL button to select the key alpha, the SHIFT button stays active when pressed. You do not have to hold down SHIFT to access shifted sources. Press SHIFT again to return to normal source selection.

Modifying Split Keys

You can modify the appearance of a Split Key to suit your application.

To modify the appearance of a Split Key:

3.Press NEXT until Edge is displayed.

4.Adjust the Edge value by rotating the corresponding knob until the desired effect is achieved.

5.Press NEXT.

6.Adjust the Shadow, Gain, SPClip, or SpRjct, value by rotating the corresponding knob until the desired effect is achieved.

For More Information on...

•selecting keys, refer to the section “Selecting Keys” on page 19.

•setting the Chroma Key share mode, refer to the section “Resource Sharing” on page 14.

Split Keys

A Split Key allows you to assign a different alpha source for a Key than the fill/alpha associations that are set up during configuration or to use a separate alpha source for a Self Key.

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1.Create a Split Key. The Key Menu is displayed with a new first page.

2.Use the Alpha knob to select the input used for the key alpha.

3.Press the Alpha knob to accept the change.

Note:

•If you wish to use a matte for the key fill, press the Matte button on the Key/Aux bus to access the Matte menu.

•If you are using a Split Key with a matte key fill and you wish to turn the key into a Chroma Key, the switcher will default to black on that key.

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