Datavideo SHOWCAST 100 4K Switcher with Built-In Streaming Encoder - Manual (Page 36)

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Quad View Mode
HDMI 1 (CH1) HDMI 2 (CH2)
HDMI 3 (CH3) HDMI 4 (CH4)
Portrait Mode
HDMI 1 (CH1) HDMI 2 (CH2) HDMI 3 (CH3) HDMI 4 (CH4)
BLK Button Position
You can also change the BLK button position to either the rightmost or leftmost button of the
Program/Preview rows.

BLK: Sets the BLK button to the rightmost position.

BLK : Sets the BLK button to the leftmost position.
9:16 Safety Marker
Turning ON the safety marker sets the safety zone display, which is the standard viewing range of the
recorded video.
Output Format
Select a color encoding system for your video output. The available color formats are listed below:

RGB

YUV444

YUV422