DS Keyer Screen. AJA KONA LH/LHe

DS Keyer Screen

KONA LHe Installation and Operation Manual — Using The KONA LHe

The KONA LHe has a hardware-based downstream keyer that is ideal for putting logos, “bugs” or other video material with an alpha channel on top of video being played out or printed to tape.

A typical application would be putting a television station's call letters or channel over program video content. Keyed video can be from the KONA's internal Frame Buffer (from storage, video

In, KONA TV, etc.) or from a graphics file that has an alpha channel (PhotoShop etc.).

45

1

KONA LHe Control Panel, DS Keyer Tab

DS Keyer Screen Settings

Downstream Keyer Mode:

Downstream Keyer Off — when this pulldown menu item is selected the downstream keyer will be turned off

Frame Buffer over Matte— places the keyed video with alpha channel currently in the

Frame Buffer over a fixed color matte determined by the “Matte Color” setting set separately.

Frame Buffer over Video In—places the keyed video currently in the Frame Buffer over the video input for playout or print-to-tape.

Matte Color: only available when the pulldown “Frame Buffer over Matte” or “Graphic over Matte” are selected-pressing this button brings up a color selection dialog. The dialog provides a variety of ways to select a matte color including a color wheel, color picker (choose from a location anywhere on the computer screen), numeric sliders, swatches, “crayons”, and spectrums. The matte chosen will be used as a video background under the keyed video.

Foreground pre-multiplied (checkbox): use to avoid “matte lines” and improve the appearance of the foreground (key) being composited over the background.

Audio Out:

Frame Buffer—select audio out to be routed from the contents of the Frame Buffer.

Audio In—select audio out to be routed from KONA’s currently selected input(s).