Io 4K Plus Capture, Display, Convert v14.0r2 45 www.aja.com
Timecode Input Settings
RP-188 Timecode <n>
In RP-188 timecode (SMPTE 12M-gg2) there can be multiple timecode types in the
data stream. Use this pull-down to select the one you wish to monitor:
• RP188 LTC (Linear timecode)
• RP188 VITC 1 (Vertical Interval timecode)
• RP188 VITC 2
• LTC Port input
The selection will be displayed in the timecode value displayed to the right of the
pull-down.
User Bits
For monitoring a variable framerate (VFR) timecode (such as Varicam), you may
wish to check the User-bits box. If you set this checkbox, Io 4K Plus will detect
and interpret the user-bits and display them next to the checkbox. You will see
the original framerate (30 fps in the figure below) followed by the adjusted frame
padding (two digits reporting discarded and retained frame padding).
NOTE: SMPTE 12M-2 is the updated name and specification for what was RP-188.
Figure 14. AJA Control Panel, Timecode Screen
Timecode Output Settings
Use QuickTime Timecode (Mac OS Only)
This feature is for Final Cut Pro 7 (or earlier), VTR Exchange, and AJA TV only. When
checked, it directs Io 4K Plus to output timecode from the QuickTime timecode
track.
Timecode Burn-in
This pulldown selects whether the timecode value is displayed in a “burned-
in” window in video output. If set to “OFF”, timecode will not be keyed over
the video. If set to “Timecode”, then the timecode value will be keyed over the
output video for all of the Io 4K Plus outputs. This can be useful for synchronizing,
choosing edit points, dailies, and many other purposes.
Timecode Offset
When QuickTime timecode in disabled, this text entry field allows you to
generate a timecode based on the offset entry. You can select a framerate from
the pulldown menu at the right side of the pane. Use that same value here as the
source video to ensure the timecode is synchronized.