Downstream Keyer Screen - AJA KONA X Installation And Operation Manual

Downstream (DS) Keyer Screen
Figure 28. AJA Control Panel showing DS Keyer Screen for KONA X
KONA cards have 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. Keyed video can be from the KONA X's internal
framebuffer (from storage, video In, etc.) or from a graphics file that has an alpha
channel (PhotoShop etc.). Downstream keyer operation requires Control Panel to
be in Playback mode.
NOTE: KONA X's downstream keyer works with SD/HD/2K signals only, not 4K/UltraHD
Settings in the DS Keyer Screen provide control over how the keyer operates and
whether it's turned on or off.
Downstream Keyer
Mode
• Downstream Keyer Off - When this pulldown menu item is selected the
downstream keyer will be turned off.
• Frame Buffer over Matte - fixed color matte determined by the "Matte Color"
setting set separately.
• Frame Buffer over Video In - Places the keyed video currently in the
framebuffer over the video input for playout or print-to-tape.
• Graphic over Matte - Places a graphics file having an alpha channel (chosen in
"Graphic File" pulldown) over a fixed color matte determined by the "Matte
Color" setting set separately.
• Graphic over Video In - Places a graphics file having an alpha channel (chosen
in "Graphic File" pulldown) over the video input for playout or print-to-tape.
• Graphic over Frame Buffer
KONA X and KONA Xpand Manual v1.0
signals.
45 www.aja.com