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To distinguish this workflow from PLAY LIST usage, we borrow ‘program-preview’ terminology from the
traditional video switcher realm, which employs a very similar approach.
14.2.1
‘PROGRAM OUT’
In this workflow, one output is assigned ‘program out’ duties. The ‘program output’ comprises the signal
path for principal replay output (i.e., the a/v stream selected on the ‘program bus’) to downstream
devices, whether for direct display or further processes such as switching, recording, etc. In this
alternative workflow, Channel B serves as 3Play’s ‘program bus’.
14.2.2
‘PREVIEW OUT’
A second channel (often referred to as the ‘preview bus’) serves a special preparatory role, allowing you
to queue up the source you intend to send to ‘program out’ next. Channel A thus becomes 3Play’s
surrogate ‘preview bus’.
14.2.3
AUTO WORKFLOW
Using 3Play in a program-preview workflow could scarcely be simpler – or more powerful. Let’s consider
an example:
Channel B (‘program’) is sending a live camera feed to a downstream stadium display
With control delegated to Channel A, you select a replay clip
Press the Auto button on the Control Surface
Instantly, the currently selected transition introduces the replay clip from Channel A (‘preview’). Replay
playback commences automatically from the clip’s In Point.
If LOOP is enabled in the Transport controls, the replay source will continue playing over and over
until you interrupt it, perhaps by a TAKE, or another AUTO operation.
Otherwise, it might play right past the marked Out Point to the limit established by the Out Point
Padding setting (Options menu – see Section 6.4.2), giving you a little leeway to safely transition
back to the original source (now on ‘preview’).
14.3
TRANSITION EFFECTS
3Play supports two distinct types of transitional effect. Standard effects could be loosely lumped under
the description of wipes. In generally, this type of effect involves the pixels of the current scene being
progressively replaced by those of the incoming image.
Содержание 3Play 3P1
Страница 1: ......
Страница 3: ...3Play ...
Страница 4: ......
Страница 14: ......
Страница 16: ......
Страница 18: ......
Страница 58: ......
Страница 70: ......
Страница 78: ......
Страница 90: ......
Страница 104: ......
Страница 144: ......
Страница 150: ......
Страница 182: ......
Страница 196: ......
Страница 200: ......
Страница 204: ......
Страница 206: ...Copyright 2018 NewTek Inc All rights reserved ...