6-2 Advanced Automatic Editing

Editing 6 Chapter

6-2-3 Performing Preread Editing

Video and digital audio signals already recorded on the tape can be used as an edit source for insert editing. This type of editing is called preread editing, as the VTR uses preread heads to read signals in advance. Signals that are read in advance can be sent to mixers for mixing, then recorded to the original channels or other digital audio channels.

The preread editing settings are performed with the

ALT/[F1] (PREREAD)buttonsintheHOMEmenu.

For details on the settings, refer to “4-2-4 Preread Settings (PREREAD)” on page 4-17.

Video source

 

Digital video input

Digital

Video

video

 

switcher

 

output

Audio Digital

mixer audio input

Digital audio output

Audio source

Preread editing

Notes

•In preread editing, if an input video signal is used as the reference signal for the output video signal, oscillation may occur because of loop connections. To avoid this, select the external reference signal for preread editing by setting the item 005. SERVO/AV REFERENCE select in the VTR SETUP menu to external.

•When preread mode is selected, shifting of the VTR to E-E mode is disabled in all operation modes to prevent oscillation caused by loop connections. If preread mode is deselected while a loop between the input and output of the same channel exists, E-E signals are output and oscillation occurs. To prevent oscillation, do the procedure below to select PB mode for both the video and digital audio channels before the start of preread editing.

1

PresstheALT/[F1]

(PREREAD)buttonsinthe

 

HOME menu and select video, audio, or a/v.

2

Make the required connections for preread editing.

3

Perform preread editing after selecting the insert

 

editing mode.

 

 

4

After preread editing, undo all the connections

 

used for the preread editing.

 

5

PresstheALTbutton, and thenpress [F1]

(PRE

 

READ) button to select off.

 

6

Check that no loop connections remain.

 

6-18Chapter 6 Editing