To combine the video images after applying a shadow
Use the Combiner function to select channel 1 + channel 2 and channel 3 +
channel 4, then turn [Ch 1 Shadow] and [Ch 3 Shadow] on.
To apply a shadow after combining the video images
Use the Combiner function to select channel 1 + channel 2 + channel 3 +
channel 4, then turn [Ch 1 + Ch 2 Shadow] on.
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Global Effect Operations
Ch1
Ch2
Ch3
Ch4
Ch1
Ch3
Ch2
Ch4