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Operation
How to perform transitions, using keys and key modifiers, memories and custom controls, as well as Media-Store operation.
Keying
Keying is the term used to describe when you insert (or electronically cut) portions of one scene into another, or place titles over background images. Keys are made up of two basic components, an alpha, that cuts the hole in the background video, and a fill, that fills the hole with different video.
Auto Select Keys

Operation
How to perform transitions, using keys and key modifiers, memories and custom controls, as well as Media-Store operation.
- Audio and Video Processing
  Video and audio signals are processed and passed through the switcher in different ways, depending on how the switcher is being used or is set up. A better understanding of how the switcher is processing these signals help you to achieve the production you want.
- Video Sources
  The switcher has access to three basic types of video sources, external, internal, and follows.
- Matte Source
  Matte color backgrounds (BG) are color signals that can be applied to backgrounds and keys. Color selection is done either by picking a preset color, or by adjusted hue, saturation, and luminance to create a custom color.
- Copying
  You can copy the content of an ME or keyer to another ME or keyer.
- Transitions
  Transitions are used to change the background video and take keys on and off-air. A transition can include any combinations of background and keyers for an ME, MiniME™, or Canvas. The background and each keyer can be transitioned independently.
- Keying
  Keying is the term used to describe when you insert (or electronically cut) portions of one scene into another, or place titles over background images. Keys are made up of two basic components, an alpha, that cuts the hole in the background video, and a fill, that fills the hole with different video.
- Memory Functions
  A memory register is a snapshot of the current state of the switcher that can include one or multiple MiniME™, Canvas. Up to 100 memory registers per MiniME™ or Canvas can be stored and recalled on the switcher. Each of these memory registers can store as little as the information of one MiniME™, or as much as the current state of the entire switcher, including all MiniME™, Canvas Aux Buses, and DVE settings.
- Switcher Sets
  The switcher stores configuration and operation data in a number of registers that contain the individual entries for items such as memories or personality settings. These registers can be stored as a single archive file, or as a register set that contains all the individual register of that type; all memories for example. These files are stored into Sets on USB drive. Different Sets can be created for different shows or applications, allowing you to quickly locate and recall the switcher configurations.
- Media-Store
  The MediaManager interface to the Media-Store allows you to load stills, animations, or audio files from the USB drive. Up to 18 (4 in UHDTV1) independent channels of video with alpha for playout of stills and animations are available switcher-wide.
- Custom Controls
  Once programmed, a custom control (CC) can be played back by pressing a button. The custom control can be as simple as triggering an output GPI pulse, or as complex as recalling a specific memory register on an ME, performing a switcher transition, and selecting a group of keys.
- Sequencer
  The Sequencer allows you to create a playlist of custom control events.

Auto Select Keys

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.

To Set Up an Auto Select Key

An auto select key is set up by selecting the keyer and video source you want to use, and adjusting the key parameters. The pairing of the video and alpha video signals is done when configuring video inputs. Refer to the Setup Manual that came with your switcher for information on setting up Auto Keys.

Click Navigation Menu > Live Assist > MEs and select the ME and key that you want to set up.

Tip: You can use the same procedure for a MiniME™ or Canvas. You can use the same procedure for a MiniME™.
Click Key Fill and select the video signal you want to use for the key.
Click Auto Select.

Tip: Click Make Linear to return the clip and gain values to the default settings.
Use the Clip slider to remove lower-saturated colors from the video image.
Use the Gain slider to adjust the transition between the video image and the parts of the video image that are removed.
Use the Transparency knob to adjust the transparency of the key from opaque (0) to fully transparent (100).
Click Key Invert to reverse the polarity of the key alpha so that the holes in the background are cut by dark areas of the key alpha instead of bright areas.
Click a Keyer Mode button to override the shaped setting for the key.
- Normal — set to a linear keyer for an unshaped source.
- Additive — set to an additive keyer for a shaped source. The Key Invert function is disabled in this mode.
- Full — set the alpha to fully opaque (white). The Clip, Gain, Make Linear, and Key Invert functions are disabled in this mode.
Click Mask to apply a mask to the key.