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Can’t capture more than 20 sec
Hi everybody hopefully somebody can give me a little help with this. I’ve just installed a Kona 3 into my G5 quad and for some reason I can’t seem to capture any more than about 20 seconds at a time before the capture fails saying that there were dropped frames detected. If I try to capture clips shorter than 20 seconds everything is fine but larger clips will not work regardless of if they are attempted with the “Capture Clip” feature or logging them first and attempting a batch capture.
I’m trying to capture Digibeta via ‘SDI In 1’ on my Kona with embedded audio. My A/V settings are
Sequence Preset: AJA Kona3: 525 29.97 10 Bit
Capture Preset: AJA Kona3: 525 29.97 10 Bit
Device Control: AJA Kona3: 29.97 Sony VTR A
Video Playback: AJA Kona 525i29.97 10 Bit (720 x 486)
Audio Playback: AJA Kona
I’ve got all new cables and I’ve tried a few different ones just to be sure. Deck control is via 9pin and Blackburst is feeding the VTR before looping into the Kona3 breakout box where it is terminated by a 75ohm terminator.
The machine is a G5 Quad on 10.4.2, 6.5GB ram, FCP is 5.0.4 and I just installed the new drivers recommended by the AJA support site. I’m trying to digitize to an xServe Raid 5.6TB connected directly to my G5 via 2gig PCIe card from Apple. That’s all of the details I can think of if I’ve missed anything that could help to solve things please let me know.
Thanks in advance for any and all help.
Jeff
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3 Replies
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It seems most likely that its a RAID configuration issue. How is your RAID configured (0,1 ,5 etc)? How many drives? What settings are you using? Have you used the AJA KONA System Test utility?
You want to enable the drive cache as well as enable the controller write cache. Your Xserve RAID should draw power from a UPS. Another performance tune you can do is set read prefetch to 8 stripes in order to improve sequential read performance (as is often the case with audio and video editing). You should only enabled the drive caches if the Xserve RAID is connected to a UPS. In addition, only enabled the write caches if you have the controller backup batteries installed.
You can download the AJA Kona System Test utility at https://www.aja.com/html/support_kona2_swd.html
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Try disconnecting the sync from your system, and setting the kona control panel to free run instead. How is the xServe RAID formatted?
Jerry
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thanks guys, it was a Raid config issue. i needed to uncheck the ‘Allow Host Cache Flushing’
thanks again!
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