AJA io XT, Installation And Operation Manual, Page: 37 / 66

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Io XT Installation and Operation Manual — Control Panel Operation
Io XT Formats include:
Note: The AJA Control Panel software uses the abbreviation “sf” instead of “psf” when
referring to “progressive segmented frame” formats. In the manual and in other
literature you may see either of these acronyms used interchangeably. Visually it is
easier to discern at a glance if you are working with progressively segmented frame
formats (sf in the AJA Control Panel) as compared to progressive frame formats
which will show only “p.”
Crossconversion: if you have an HD format as your primary and then select a
secondary HD format with a different frame size, the Io XT will perform a
crossconversion where necessary (input or output) for “like Hz” formats. “Like Hz”
means that 720P 59.94 may be converted to 1080i 29.97 (59.94Hz). Converting
from disparate Hz is not supported on the Io XT for crossconversions. The example
below shows 1080i to 720p.
Up (Conversion)—the Up and Down pull-down menus are available when conversion
has been selected for the video path to/from the framebuffer and like Hz formats
are selected (the one exception is 1080PsF 23.98 which can be downconverted to
525i 29.97.) Different choices will be available depending on the type of conversion
and formats being converted. SD to SD conversions are essentially aspect ratio
conversions to accommodate transforming anamorphic images to letterbox or
vice versa.
For Upconversion the following choices are available:
Anamorphic: full-screen “stretched” image
Pillar box 4:3: results in a 4:3 image in center of screen with black sidebars
Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image
with black sidebars
Zoom Letterbox: results in image zoomed to fill full screen
Zoom Wide: results in a combination of zoom and horizontal stretch to fill
a 16:9 screen; this setting can introduce a small aspect ratio change
Down (Conversion)—for downconversion the following choices are available:
Letterbox: image is reduced with black top and bottom added to image area with
the aspect ratio preserved
Crop: image is cropped to fit new screen size
Anamorphic: full-screen “stretched” image
525i 23.98
525i 29.97
625i 25
720p 23.98
720p50
720p 59.94
720p 60 1080i 25
1080i 29.97
1080i 30
1080sf 23.98
1080sf 24
1080sf 25
1080sf 29.97
1080sf 30 1080p23.98
1080p24
1080p25
1080p29.97
1080p30
1080p50a
1080p59.94a
1080p60a
1080p50b
1080p59.94b
1080p60b 2K1080p23.98
2K1080p24
2K1080p25
2K1080sf23.98
2K1080sf24
2K1080sf25