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Io LA dropped betacam sp frames only
Hello All,
I am using an Io LA to capture10 bit uncompressed from a betacam sp deck. My system is a Macbook Pro dual core 2ghz with 2gb ram, firewire 800 express card and a G-Raid 500gb capture drive. I keep getting dropped frames from the beta deck but do not get dropped frames from hooking up another source such as a dvd player through the component input. Does anyone have any suggestions. I have tried for testing purposes to capture 8bit to DVCPro50 and that also dropped frames.
Thanks,
Marc -
7 Replies
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the dropped frames is because of your drive (which is probably full). A Firewire 800 drive CANNOT do uncompressed 10 bit. It can (barely) do 8 bit uncompressed and DVCPro50 (and DVCProHD). This has got nothing to do with your Beta VTR, or any other source. If it was working at one time – then God bless you – it ain’t consistant.
I have NO IDEA of how the Mac Book Pro – which does not support FW800 natively – even handles FW800. Try the new Firmtek SATA card that just came out.
Bob Zelin
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This still is odd because I have no problem captureing from a dvd player, or any other source other than a beta deckk, using 10bit so I would think my drives are up to spec. Also the macbooks use an express 34 card slot for a firewire 800 card. And no my drives are not full they are 500gb newly formatted Mac OS Extended not journeled. I also benchmarked the drives at a sustained 42 megabytes per second and I am trying to capture at less than 30.
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honestly, I just don’t have the experience with the MAC Book Pro, so I can’t give you first hand accounts of what does and does not work. My comments are based on G4’s and G5’s. It makes no sense to me as well that you “can” capture from your DVD, but not your Beta VTR. The computer is unaware of what source you are capturing – only the data rate.
Bob Zelin
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Bob I appreciate the input. I think I am going to buy some Sata drives anyway to elimniate at least that as an issue. I am also now experiencing sporatic capture rates even at dvcpro50 resolution so I suspect it could be the firewire 800 card itself.
Marc
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You should get the new Firmtek SATA card, and two SATA drives (Hitachi or Seagate) in the firmtek 2 bay enclosure. 2 SATA drives striped together RAID 0 will give you over 120mb/sec, – more than enough to do anything except uncompressed hD.
bob Zelin
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I have them already on order and shipping 2nd day air:) Hopefully this will eliminate the issue.
Marc
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Well I have upgraded to a sata setup that sustains 120MB per second, but I am still am getting random dropped frames on capture. I have even tried using the 8bit to dvcpro50 and the process quits because of dropped frames. Is it possible that the aja box is too sensitive for correct video sync? I have even tryed running s-video from some recently shot dv tapes and am experiencing dropped frames on capture.
marc
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