Blackmagicdesign ATEM Mini Installation And Operation Manual page 98

Background
A full screen image.
Fill
Another full screen image you wish to overlay on top of the background.
Key/Cut
In the case of a pattern key the key/cut signal is generated by the switcher's internal
pattern generator.
Pattern Key Settings
To set up a pattern key on the upstream keyer in ATEM Software Control:
1 Expand the upstream key palette and select pattern from the key types bar.
2 Select the fill source.
3 Select the key pattern.
4 Adjust the key parameters to refine the key. For a description of pattern key
parameters, refer to the table below.
Keying using ATEM Mini 98