AJA KONA 3G Installation And Operation Manual page 82

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Can the KONA handle HDV, P2, XDCam, or AVCHD? If so how?
HDV, XDCam, P2, and AVCHD files will play real-time in Premiere Pro when using AJA
supplied project presets. Alternatively, you can use KONA to capture uncompressed from
these cameras if they have SDI, HDMI, or Analog outputs.
Does KONA Offer Support for compressed codecs?
All KONA cards can capture DV 25 and DV 50 compressed QuickTime files from analog and
digital sources through their available inputs. Also, DVCProHD compressed QuickTime files
can be captured for HD resolutions. Please see our DVCProHD white papers (see the
whitepaper DVCProHD Editing with KONA and XENA at
http://www.aja.com/media_folder_web/AJA_whitepaper_DVCProHD_editing.pdf
I am using After Effects for compositing and sometimes my preview is
not in real time—why is this?
RAM Preview should be very close to real-time for HD in After Effects. Please ensure you
have the following settings for proper RT RAM preview.
1. Make sure that the "Primary Format" of the AJA Preview Panel in AE matches the
resolution and frame rate of your After Effects Composition.
2. Also, RT RAM Preview is only possible with 8-bit AE Projects and with the "8-bit RGBA
4:4:4:4" setting for the "Output 8-bit As:" found in the AJA Preview Panel Color
Options. Other color spaces and AE Project depths require a software transformation
of the video data before being displayed—thus slowing down preview.
3. Next, please ensure that the "Resolution" setting for "Time Controls" is set to "Full". If
not set to "Full, " the image that the AJA Preview Panel receives and sends to the
KONA board during RAM Preview will not be sent at "Full Resolution" and thus will
either be software resized to Full Resolution before sending to the KONA Board for
display, or will be center cropped before sending. The latter choice is controlled by
the checkbox in the AJA Preview Panel labeled "Auto Resize Image" under the
"Primary Format" Setting.
4. If RAM Preview is still not real-time, you can try some of the following – setting your
Zoom to "100%" in your AE Composition, making sure the "Frame Rate" of the AE
Time Controls" matches the frame rate of the "Primary Format" in the AJA Preview
Panel, and muting audio in the AE Time Controls.
Note: In some cases the available bandwidth of the motherboard limits the cards ability to
output full frame rate 1080i 29.97 RGBA.
How does KONA hardware Up-convert, Cross-convert or Down-convert?
The KONA 3G and LHi can perform many different conversions of a video source. They can
convert only when video is passing across the board. So in capture or playback you have the
ability to convert video in hardware in real-time with no CPU/Memory cost.
Can I work with 720p variable frame rates?
KONA will automatically remove duplicate frames from varicam footage as long as the
RP-188 flags are set correctly. However, this footage will have 29.97 fps timecode. KONA
does not attempt time code conversion, so the timecode in captured files will not be
reliable.