KONA LH Capture, Display, Convert v14.3 36 www.aja.com
Conversion Screen (Mac OS only)
Figure 21. AJA Control Panel, Conversion Screen
In the Mac OS version of the AJA Control Panel, this screen offers controls that
determine how the card behaves with 3rd-party applications.
IMPORTANT: Do not confuse this Conversion function screen, which uses QuickTime for
conversion and is only available on Mac, with the Format function screen which
uses AJA hardware for conversion and operates on either Mac or PC.
Software Conversion
These parameters can affect pulldown and pause behavior. This group of
software conversion parameters apply ONLY when using legacy QuickTime
based applications on Mac OS. These applications include things like FCP7, VTR
Exchange, and AJA TV. Applications like FCPX, Premiere Pro, Media Composer and
Control Room, no longer use these legacy QuickTime Components.
3:2 Pulldown Pattern
The value selected from this list is used whenever, due to format selection,
you’ve chosen to do 24 frames-per-second to 30 conversion where extra fields
will be added to pad the existing ones. Depending on video content, selection
of different field patterns may be useful in reducing jitter due to the content of
adjacent fields. The numbers in the pattern choices specify the frequency with
which inserted fields will be repeated. For example, “2:3:2:3” means duplicate a
field twice, then the next field three times, then the next twice, and then back to
three times.
3:2 Pulldown Offset
The 3-2 Pulldown offset is used if the 3-2 pulldown feature is removing the wrong
frames. This setting lets you adjust when the pulldown begins in a sequence of
frames.
