Blackmagic ATEM Manual - Concept Music Art
Blackmagic ATEM Manual - Concept Music Art
Blackmagic ATEM Manual - Concept Music Art
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84<br />
Operating Your <strong>ATEM</strong> Switcher<br />
There are multiple ways to transition a key to the program output. The key can be cut on or off, it can be<br />
mixed on or off, or it can be mixed along with a background transition. Upstream keys are transitioned to<br />
the program output using the next transition block. Downstream keyers can be transitioned using their own<br />
transition buttons or by using the DSK TIE button to link the transition with the main transition control block.<br />
Using Downstream Keyer Transitions<br />
The downstream keyers have their own transition buttons and transition rate windows. Once a downstream<br />
keyer is configured it can be easily taken on and off the program output using one of the following three<br />
methods:<br />
Step 1.<br />
Press the DSK CUT button to immediately turn on or turn off the downstream key on the program<br />
output.<br />
Step 2. Use the DSK AUTO button to gradually transition the downstream key on or off the program<br />
output at the rate displayed in the DSK rate window.<br />
Step 3. Use the DSK TIE button to link the downstream key with the main transition control block.<br />
Once linked the DSK will be mixed on or off along with any transition type selected in the main<br />
transition control block at the rate specified by the transition control block.<br />
Pressing the DSK TIE button shows the downstream keyer on the preview output.<br />
It is not possible to preview a downstream keyer transition when linked with the main transition<br />
block. If the DSK TIE button is on when you switch to preview transition mode the tie functionality<br />
will be ignored until the preview transition mode is turned off.<br />
DSK parameters:<br />
Clip<br />
Gain<br />
Rate<br />
Inverse<br />
Pre-Mult<br />
The clip level adjusts the threshold at which the key cuts its hole. Decreasing the<br />
clip level reveals more of the background. If the background video is completely<br />
black then the clip value is too high.<br />
The gain adjustment electronically modifies the angle between on and off<br />
thereby softening the edges of the key. Adjust the gain value until the edge<br />
softness is desirable but the background video luminance (brightness) is not<br />
affected.<br />
The mix rate at which the downstream keyer transitions on or off.<br />
Inverts the key signal.<br />
Identifies the key signal as a pre-multiplied key.
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