Io XT/4K Capture, Display, Convert v14.0 27 www.aja.com
Follow Input
Enabling the Follow Input checkbox allows the Control Panel Buffer to auto-
switch to whatever is the detected input format. This feature works if the
controlling application supports input-based capture—Avid Media Composer
or AJA Control Room for example. Follow Input can also be active when there
is no 3rd party controlling application and the Default Output setting is Input
Passthrough (see
"Video Output" on page 24
).
Pixel Format
Use this pulldown menu to choose from:
• YUV-10, YUV-8, RGB-10, ARGB-8, or RGB-12
RGB Range
The RGB Range pulldown menu allows you to select either:
• Full range (0-1023)
• SMPTE range (typically 64-940) for RGB color output.
NOTE: RGB Range is only used when the SDI input or output is configured for RGB.
Secondary (Converted) Format (Io XT and Io 4K in 4K Mode)
This pull-down menu lists all compatible formats for conversion (incompatible
formats are not shown). This allows you to see what you’ve chosen, and also see
those formats that are compatible with the selected Primary format.
Cross-Conversion
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 cross-conversion 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 cross-conversions. The example below shows 1080i to
720p.
Down Conversion
For down-conversion 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
Up Conversion
For up-conversion 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