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intermittent stuttering on capture
Audio begins intermittent stuttering on capture. I teach a video production class. The students, for now, are using emacs. I have a 2.5 dual gig PM G5. I thought it was a sync problem due to using different camcorder brands including Canon, which I have read, can have this problem. However, today a student exported a completed video onto a fresh tape using a Panasonic cam as a deck. The original footage was shot with a Canon XL2. The tape plays fine on the camcorder. While importing the tape into my teacher computer (it is the only one that can burn DVDs) the audio began to stutter. I thought maybe it was being captured ok and it was just a playback while importing thing. No. The captured footage has stuttering audio. There is plenty of space left on the HD. I was using the same camera as deck and firewire cable that the student had exported the project with. Any ideas what the culprit might be? Bad firewire port? Fragmented HD? Haven
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4 Replies
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I suppose it could be a bad FW port or cable, but it’s more likely something else. Is the source machine clean? might try cleaning it. Also capture audio to a drive other than the startup disk… that will help. Turn on the “abort capture” on dropped frames too, then you’ll know if it’s the fact the drive isn’t keeping up with captures.
Jerry
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Thanks Jerry,
The firewire cable is good because it works on the other computers fine. I’ve tried several different cams as decks and a dsr-11. So that’s not the variable.
I’m kind of in a bind here. I ordered all new software but the package got misplaced somewhere in the delivery chain at school. The old discs are missing. I only have one internal drive (a second drive too was with the missing order) and the G5 only has one firewire card (I think) even though it has a 400 port in front and an 800 port in back. It won’t allow me to capture with both ports occupied. So what I have been doing is capturing to the start up drive and then copying the project to the external firewire drive and deleting the copy on the internal drive. I’m sure this is not as clean as it should be but for the time being it’s all I can think of.
So, your guess is it’s a software problem?
Could the firmware for the firewire card have gotten corrupted? I think I can download that. I can also download and re-install an OS update if that would help.
Thanks again
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I think your problem stems from the fact you are capturing to your internal startup disk… it’s dropping frames sounds like. Try capturing to another drive again. What happens when you setup a FW drive and attempt a capture? If it fails, do you have another drive to try? Some will work without a hitch, I do it all the time. I’ve done it with Granite Digital drives, and with Weibetech drives and with G-Tech drives.
Jerry
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Hi Jerry,
That is what I suspect. The firewire drive I am trying to use is a Hitachi in a Weibetech 800 enclosure. I have used it successfully at home on my G4 with a Weibetech 800 card added which gives me a separate bus. I have used it successfully on the G5 but most of the time that I hook it up and try to import using a cam on the other port, I have problems getting any type of device control. The video will play on the camera but will not play on the editor/viewer. If I unplug the firewire drive, all is well. Maybe turning things on in the right order will help.
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