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DVCPROHD capture issues
I’m capturing DVCPROHD 720p24 shot on HDX900 over firewire, to Final Cut Pro 5 on a Dual 2.0 G5, using a FW800 drive. Obviously FCP is performing the pulldown to 23.98 from 60fps. I’ve noticed that when I am capturing I keep getting an error come up saying
ERROR – Capture now was aborted due to a break in cadence in the VFR/Pulldown in source stream.
Am I getting the error because my G5 with the FW800 drive is not fast enough to capture and do pulldown from tape at the same time…
When I capture on my Mac Pro to my internal SATA RAID (which is being used for another project right now) it doesn’t get that error… at least until the end of the tape when it gives me that error… but I’m guessing that’s just a break in the stream…
Anyway, I’m stumped.
Cheers
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4 Replies
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The only thing I can guess is that it is due to the fact that the macs only have one firewire bus. FW800 and FW400…same bus. So connecting the deck to FW400, and a drive to FW800…they are on the same bus, and the DW800 drive is being slowed down to the FW400 level.
Do you have a FW PCIe card on the MacPro? You might consider that for this system. FW800 is plenty fast, but the bottleneck is the FW bus.
Shane
Littlefrog Post
http://www.lfhd.net -
[Shane Ross] “The only thing I can guess is that it is due to the fact that the macs only have one firewire bus. FW800 and FW400…same bus. So connecting the deck to FW400, and a drive to FW800…they are on the same bus, and the DW800 drive is being slowed down to the FW400 level.”
Never been an issue here, either with the 1200A or the 1400 deck. I hear people talk about the FW bus slowdown all the time, but we have a GRAID 500, a GRAID 800 and a LaCie 2TB FW800 RAID all daisy chained on the FW800 bus with both the 1400 and an HDV deck feeding in through a FW hub and we never have dropped frames or capture issues with DVCPro HD.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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When I capture on my internal drive there doesn’t appear to be any problems… so it must be a firewire issue… I did read a while back that the older G5’s had a problem with FW bus speed… Too bad that I can’t capture to a FW drive right now though… would save me some time…
Thanks again for the help
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[morgster] “I did read a while back that the older G5’s had a problem with FW bus speed… Too bad that I can’t capture to a FW drive right now though… would save me some time…”
The G5 Dual 2.0 is the exact same machine we cut the first 15 or so episodes of “Good Eats” on and I know I cut at least 5 of them on a FW800 G-RAID drive. In fact, that machine is still here and serves as a Graphics / ingest station using a LaCie Big Disk Extreme FW800 drive so it’s still working to this day.
Not sure what to tell you on your end, but it does work just fine here.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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