Vision Operator’s Manual (v12.0 MD) Keying • Ops 7–9
Auto Select Key
An Auto Select Key is a key in which two video signals are required to make the key. The Alpha
is used to cut the hole in the video and the fill is used to fill the hole. These signals often originate
from external devices such as character generators, external still stores, or other graphics systems.
An Auto Select Key can be used by an MLE Effects Keyer, or an AuxKeyer. Refer to the section
“AuxKeys” on page Ops 7-40 for more information on AuxKeys.
Use the following procedure to set up an Auto Select Key:
1. Press the SEL button on the Keyers Module for the Keyer you want to set up the Auto
Select Key on. The Key Bus for the selected crosspoint group is now assigned to the
Keyer you selected.
2. Select the video signal you want to use for the key on the key bus of the crosspoint
group. The video source name appears on the Keyer mnemonic on the Keyers Module.
3. Press AUTO SELECT on the Keyers Module to select the key type. The Auto Key
Setup Menu is displayed for the selected Keyer and a small triangle appears in the top
left corner of the Keyer mnemonic. The KEY MEM button on the Keyers Module lights
up.
Auto Key Setup Menu
4. Adjust the Clip and Gain of the key as follows:
• Toggle Key Mem on the Auto Key Setup Menu to Off. This allows you to
override the clip and gain values that are stored with the key.
•Use the Clip knob on the Auto Key Setup Menu to adjust the clip level.
•Use the Gain knob on the Auto Key Setup Menu to adjust the gain, or softness.
Operating Tip — To save the new clip and gain settings for the auto select key, press and
hold the AUTO SELECT button and then press the KEY MEM button. The current settings are
stored for the selected key source.
5. Adjust the Transparency of the key as follows:
• Toggle Transparency on the Auto Key Setup Menu to On.
•Use the Transp. knob on the Auto Key Setup Menu to adjust the transparency of
the key from opaque (0%) to fully transparent (100%).
6. Select additional key modifiers as desired, using the buttons on the Keyers Module. The
available modifiers are as follows:
• MATTE FILL
• KEY INV
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