Справочник Пользователя для ARRI 416

The IVS can generate information on whether the current 

video image corresponds to a new film frame or whether 

it is a repeated video image. The White Line flag displays 

this in machine readable form. 

•  Enter the White Line Menu from the Main Menu.

All video assists are based either on PAL or NTSC video 

systems, with a fixed video frequency of either 25 full 

video frames per second with PAL or 29.97 full video 

frames per second with NTSC. The speed of the film 

camera on the other hand can be selected over a wide 

range. At every film speed which is different from the 

video frequency, the IVS has to add repeated video fields 

to compensate for the different frame rates.

In practice the most important case is a film camera speed 

of 23.976 fps and a NTSC video assist.

This creates a situation described in the drawing.

 

MENU WHITE LINE 

 

-> - WHITE LINE     ON 

   - POSITION       10 

 

- EXIT

Film

1

Film

2

Film

3

Film

4

A1

A2

B1

B2

B3

A1

A2

B1

B2

B3