Miranda NV5100MC Master Control, Справочное руководство

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NV5100MC Master Control • Reference Man ual 43
4. MCPMs
Overview
A logo is a graphic overlay. Logos are stored in the MCPM and are selectable at the control panel or
by automation. Logos overlays require no video input. Logos can be single-frame images or anima-
tions. Animations can either loop or play once. The number of logos and animations is limited by
available MCPM memory.
Squeezeback means that program output is reduced to a set portion of the video image gradually
over the transition period while a video source (the squeeze “background”) is displayed under the
squeezed image. There are 3 forms of squeezeback
— basic, enhanced (single), and enhanced
(dual). Dual squeezeback involves two images (main sources); single squeezeback involves just
one image. Enhanced squeezeback allows the squeeze regions to have borders of variable width
and color.
An over is an audio overlay. An audio over requires an audio source. The MCPM mixes audio over
and program audio at some ratio that can be preconfigured and also adjusted at the control panel.
Audio overs for MCPMs have up to 8 audio channels. (Audio overs for MCEs have up to 16 chan-
nels.)
Not all MCPMs support all effects. Some control panels can be configured with a reduced set of
effects. Only the MCPM-SDHD supports enhanced squeezeback. (See page 69.)
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The MCPM can apply 3 keyers at a time. Each of the keyers can access any of 8 distinct keyer
source pairs. Similarly, any logo applied can be selected from 64 stored logos. Any squeeze
effect can access any of 32 squeeze background sources. Each of 32 squeeze settings may use a
distinct background source. (Note that MCEs support more than 64 logos.)
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The MCPM can apply 1 audio over at any time. The audio over can access any of 4 distinct
over sources.
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Keyer connections and squeezeback connections consume up to 7 (or 8) inputs.
See Transitions , on page 58, for detail.
Transition Types
The transition rate can be fast, medium, slow, or controlled by a transition lever arm (TLA). The
exact duration of “fast,” “medium,” and “slow” is configurable. A transition controlled by a TLA is
also called a “manual” transition.
Basic transition types include cut, V-fade (or fade-fade), cut-fade, cross-fade (or X-fade), and fade-
cut. (Other types exist. See page 58.) The MCPM performs audio transitions that match the rate and
period of the video transitions. Audio transition types are analogous to the video transition types,
but are not exactly the same.
The MCPM can also perform a “fade-to-black” or FTB transition. An FTB transitions the program
video to a pre-defined matte (and program audio to silence)
— after all effects and overs — in the
transition period defined for the FTB. The matte can be any color, not just black.
The master control system allows “hot cuts” although they are not recommended. A “hot cut” is
where the operator switches a main source immediately (on program output) or turns an effect on or
off
without benefit of transition processing . A hot cut should be considered an emergency measure
— to correct an error quickly — because it can have noticeable artifacts that would be absent in a
normal transition.