Blackmagicdesign ATEM Installation And Operation Manual page 128

To set up a luma/linear key on downstream keyer 1 on an ATEM Television Studio Pro model
switcher:
1 Press the KEY 1 TIE button on the control panel to enable the keyer on the preview output.
2 Select 'luma' key type in the downstream key 1 LCD settings.
3 Press the DSK 1 FILL button from the source select row, and press one of the numbered
buttons immediately below to select the fill source for your luma key.
TIP If you select a media player for the fill source, the media player key source
will automatically be selected for the key. For example, if you select media
player 1 for the fill source, media player 2 key will automatically be selected.
4 For a luma key, always make sure the same source is selected for both fill and key.
5 In the downstream key 1 LCD settings, adjust the clip and gain controls to refine the
key or turn pre multiplied key on for pre multiplied keys. The clip and gain are set
automatically for pre multiplied keys.
To set up a luma/linear key on downstream keyer 1 on the software control panel:
1 Select the downstream key 1 palette.
2 Use the drop down controls labeled fill source and key source to specify the fill and key
sources. If performing a luma key, select the same source for both fill and key.
3 Adjust the key parameters to refine the key.
Downstream Keyer Settings
Keying using ATEM Switchers 128