Preread Editing
Video and audio signals already recorded on the recorder tape can be used as an edit source for insert editing. This type of editing is called “preread editing”, as the VCR uses the preread heads to read the signals in advance from the tape.
The video signals read out by the preread heads can be sent to a video switcher, and combined with video signals from the player for recording. The audio signals read out by the preread heads can be sent to an audio mixer for mixing with audio signals from the player for recording, and can be recorded either on the original channels or on other audio channels.
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Editing 4 Chapter
Video switcher
Digital or analog video input
ANALOG VIDEO IN
COMPONENT VIDEO IN
S VIDEO IN
SDI INPUT
Digital or analog video output (preread signals)
ANALOG VIDEO OUT
COMPONENT VIDEO OUT
S VIDEO OUT
SDI OUTPUT
Audio mixer
Digital or analog audio input
AUDIO IN
DIGITAL AUDIO(AES/EBU) IN
Y
Digital or analog audio output (preread signals)
AUDIO OUT
DIGITAL AUDIO(AES/EBU) OUT
86 Chapter 4 Editing