MENU | WHITE LINE |
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WHITE LINE | ON | |
- | POSITION | 10 |
- EXIT |
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| Film |
| Film | Film |
| Film |
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| 1 |
| 2 | 3 |
| 4 |
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A1 | A2 | B1 | B2 | B3 | A1 | A2 | B1 | B2 | B3 |
10.4.14 White Line Menu
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.
Changes made to settings are immediately activated. Check all settings on a correctly adjusted monitor.
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.
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