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Dropping Frames with Fibre Capture 5.1.2/MacPro
Hi Guys
Mac Pro 3GHz/4GB RAM/x1900/Apple Fibre HBA/Medea FCR2X Drive
Kona3/AJA IOSo far no issues everything fine. Captured hours of footage without any problems over the last few months, worked on several projects. Setup is AJA IO to Kona3 inputs.
Trying to capture (just as usual) using the Kona 8bit to DV50 preset. Capture aborts with “dropped frames were detected etc”. Latest Kona drivers 3.3 but no change. It was working fine until now.
Have tried the recommendations as per searched but no luck.
Any ideas other than re-format and start again?Projects to System HD / Capture Scratch to Medea (50% free)
Thanks guys
Sammy -
9 Replies
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What tape format are you capturing and how is that in the chain? Is your AJA io still hooked up through firewire? Are you sure you have the correct easy setup chosen?
What kind of speed are you getting on your drives? Use the AJA Kona Speed Test (it’s free).
Jeremy
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Jeremy
AJA IO is on the system Firewire but I am using it as a Convertor box to hookup DVCAM playout on the Sony HDV deck using Component out – Into Kona SDI and using the Kona Presets. It has been working flawlessly until just now.
Speed Tests I did sorry forgot to mention, seems to be ok. 260MB/s Read / 160MB+ WritesNot sure whats going on. The only successful capture now is to turn off “Report Dropped Frames” from settings and capture that way and it worked but I’d rather not.
The only “change” I remember is that video Drive was about 90% full before the capture, went into the FCP Capture on Media, moved old folders to trash, emptied trash and thats it!
Isn’t that the “proper” way of removing unused projects/media?
Any ideas?
Thanks
Sammy -
Well, Sammy, perhaps you are trying to capture to a ‘bad’ or fragmented sector on the disk. If your disk was 90% full and all you did was erase some older media, that still leaves your disk rather fragmented. The best way to defrag is is copy all of your media to another disk, restripe the array, and the copy the media back. This will ensure that all of your media is now continuous across sectors and you shouldn’t have any problems. That being said, that might not be the problem, but it’s where I would start. Dropped frames can mean a lot of things (such as mismatched settings) but it usually points to a disk i/o issue.
Jeremy
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Thanks for the suggestions. I will have to find a set of drives to move 1.5TB of data.
How do you check what applications/threads are running i.e. task
manager with OSX. Just want to make sure nothing else is crawling the background.Sammy
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Applications > Utilities > Activity Monitor
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It’s not the speed of your drives. You could capture DV50 to an iPod if you wanted to. See if you get the problem capturing to your internal. If you don’t, then it’s definately a serious problem with the drives. Try Disk Warrior and if that doesn’t fix it, call Medea.
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It’s not the overall speed, but if it keeps trying to write to a fragmented sector over and over, you are hosed.
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If you’re working with your media on an XRaid, try unchecking “Allow Host Cache Flushing” in your performance settings (RAID Admin), then recapture a few clips to double-check that this is the root of the problem. Let me know if this helps.
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cirina
I am on Medea Fibre not XRAID. Sorry…
Still trying to get this sorted out.Sam
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