AJA T-TAP - Manual (Page 28)

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Conversion Screen This screen offers controls that determine how the card behaves with 3rd-party applications.
AJA Control Panel, Conversion Screen
Pause On—these two choices determine what happens when the editing application is
paused in stop mode:
Full Frame: both fields are displayed resulting in some jitter while paused.
Single Field: a single field is displayed, showing no flicker (useful when color
correcting or whenever the flickering would be a distraction).
Software Conversion—the value selected in this pulldown 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—select a frame offset value from 0 to 4.