ARRI IVS 435, Instruction Manual

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Inser
ter Facilities
6.7.5 Frame Counter
It is recommended to check the requirements of
all facilities involved in post-production prior to
shooting.
Very often the camera is set to run at a different speed than
the video system. In areas with NTSC video system for ex-
ample, the film camera would run at 24 fps whereas the
video system works with 30 full video frames per second.
In order to adapt to the specific needs there are two different
time code formats possible.
To have the time code count related to the film camera,
select the mode ”Frame counter Film”, which is often refer-
red to as ”film related time code”. In this mode, the frame
counter of the time code (the last two digits of the time code
display) is increased by 1 if the film is advanced by one
frame e.g. 24 times a second at 24 fps. By this it is easy to
identify one particular film frame by looking at the video
image. On the other hand, this mode will create an unusual
time code count because some video images are repeated
to cope with the different frame rates of the video and the
film camera. These repeated images will get duplicated
time code words which will create error messages on some
time code readers.
To relate the time code count to the video system, select
mode ”Frame counter Video”. This is often referred to as
”video related time code” . Every full video frame will ad-
vance the time code by 1 e.g. 25 times a second in PAL or
30 times a second in NTSC. By this the IVS creates a standard
time code. On the other hand, it is more difficult to get the
link back to the time code, which was recorded on film. To
get a reliable relation, it is necessary to utilize the Pull-Down
(refer to chapter 6.10) or White-Line-Flag information
(refer to chapter 6.13).
At every full second, both time counts are identical.