*Subject to change without notice Atomos Shogun Flame – User Manual Edition 1: May 2016 38
What is Pulldown?
Many professional and consumer
cameras available today do not send
true 1080p24, 1080p23.98, 1080p25,
1080p29.97 or 1080p30 signals down
their SDI or HDMI outputs.
Instead they send 1080i59.94 in NTSC
regions (eg USA, Japan), and 1080i50
in PAL regions (eg Europe)
In order to convert the signal from the internal recording format to
1080i5994 or 1080i50, they use a process called 3:2 or 2:2 pulldown.
Pulldown is only applicable to interlaced HD signals, not 4K
Camera Setting Pulldown Shogun Flame Receives
1080p23.98 3:2 1080i59.94
1080p24 3:2 1080i60
1080p25 2:2 1080i50
1080p29.97 2:2 1080i59.94
1080p30 2:2 1080i60
You will, of course, want the Shogun Flame to record the actual frame
rate such as 1080p23.98, not the1080i59.94 to disk. In many cases, it is
not possible for the Shogun Flame to detect when pulldown has been
applied to the video, so you will have to set the correct mode of removal
on the Shogun Flame to match the setup of your camera.
With some cameras, the Shogun Flame can detect and remove the
pulldown automatically, in which case the mode you expect (eg
1080p23.98) will display on the Shogun Flame and you will not have to do
anything further.
If there is no input detected, then toggle the input by pressing the screen
until you see the input you wish to record.
Atomos is adding auto-detection support for more cameras, please
check for rmware updates regularly at www.atomos.com
1080p23.98 or 1080p24
If you have set 1080p23.98 or 1080p24 in your camera and your Shogun
Flame displays 1080i59.94 or 1080i60, then you can easily remove the
pulldown by following these steps:
• Select the Input Menu from the top Left and toggle the blue arrow
underneath Record repeatedly until you see 1080p23.98 (or 1080p24)
displayed. You may not get a green tick in this column immediately.
• Your Shogun Flame needs to analyse the video for about 1 second, in
order to detect the pulldown sequence and remove it.
• If it is not automatically detected after 1 second, wave your hand
from side to side in front of the lens, or wave the camera from side to
side for a few seconds. The Shogun Flame will detect the pulldown
cadence in the movement, and you will see a green tick along with the
video displayed on the screen.
•3:2pulldowndetectionisdifcult,ifnotimpossibletodetecton
completely still video. This is why you should wave your hand in front
of the lens.
3:2 pulldown detection is difcult, if not impossible to detect on
completely still video. This is why you should wave your hand in front
of the lens.
If you lose the input detection – for example you unplug the SDI cable
or go to Playback mode, you will need to wave your hand or the
camera again, when the signal is restored to the Shogun Flame.
Some cameras use a variant of pulldown removal, for example
Panasonic Advanced pulldown. The Shogun Flame does NOT
support this format, and it will not be detected.
Standard Panasonic pulldown is supported, ensure in the Panasonic
camera settings that pulldown is not set to Advanced.
1080p25,1080p29.97or1080p30
For these modes, simply press the blue arrow underneath Record on
the input menu repeatedly until your 1080p desired format is displayed.
There is no need to wave your hand or the camera, as 2:2 pulldown
removal does not require moving video.
10. HD Pulldown
To Next Page
Loading...
Need help?
General
Weight and Dimensions
