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Dropped Frames From Vhs
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Scewbedew
Posted: Mar 21 2005, 05:30 PM


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Being a newbie on capturing, I have some strange problems with dropped frames.

I'm trying to capture things from VHS tapes, and uses a Hauppauge WinTV card in my Win 2003 system with 512 Mb RAM and a 1800+ AMD processor.

I have successfully captured a number of VHS tapes and felt like an expert tongue.gif in capturing...until I tried this specific tape. I have a number of different recordings on the tape, and the first two was captured without any problems. But when I got to the third sequence on the tape, I suddenly got serious stutter and dropped frames.

I get dropped frames at a rate of aprox 100/minute and the dropped frames always comes in pairs.

When simply viewing the sequence in VDub, everything is smooth and no sign of stutter, but as soon as I activate capture, the quality simple get unusable.

I have tested with and without compression, with and without audio synch, with Overlay and Preview, real disk capture and test capture - everything with the same result.
CPU load is about 15% so it can't possibly be CPU overload that is the cause.
Since I have the same problem in Test Capture, it can hardly be disk problems.

I'm confused, since the other recordings on the same tape was captured without any problems whatsoever. Can the quality of the VHS recording affect the number of dropped frames? If so - why can't I see any problem with the material while simply viewing it in VDub? Any suggestions on what I can do to get past this problem?

 
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rfmmars
Posted: Mar 21 2005, 06:58 PM


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As a check have you gone back to see if you can still capture the first two?

Things may have changed or failed like the MPEG2 hardware encoder chip on my ATI did.

richard
photorecall.net
 
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i4004
Posted: Mar 21 2005, 08:26 PM


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QUOTE
until I tried this specific tape.

there will come a tape or two that cannot be capped properly, yeah.

not much you can do; perhaps try a different vhs machine to play it back on.

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