9. UPSTREAM KEY
Upstream Key essentially means that these are keys that are included as part of the transition, so in the
transition from whatever on Preview to Program, anything that's an Upstream key is going to be
transitioned with it.
9.1. Luma Key
Luma keys provide a way to composite a Text clip over a background clip based on the luminance levels
in the video. Turn on the Luma Key, a color from the key source will be removed, revealing another
background image behind it.
Switching a video with background to PVW window, and turn on the Luma Key. Press the menu knob to
enter the setting interface. Under Luma Key seb-menu, user can assign the fill and key source from
various options including Black/ Color Bar/ Color1/ Color 2/ HDMI 1/ HDMI 2/ HDMI 3/ HDMI 4/ Image
(import from USB disk). Configure and adjust the Key parameters including Clip/Gain/mask to achieve
the effect needed.
Press ON AIR button, the ON AIR button will be on, and the Key effect will show on PGM.
LUMA button ON: Luma key shows on PVW
ON AIR button ON: Luma Key available on PGM
LUMA and ON AIR button both ON: Luma Key available on both PVW and PGM. Corresponding status in
menu is <KEY & ON AIR>
Luma key menu interface and parameter setting as below:
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