On Tue, 4 Apr 2006 03:46:41 -0400 Dave Dodge <[EMAIL PROTECTED]> wrote: > Several months ago I tried doing some NTSC capturing (using a cx88 > device and mencoder) from a fairly high-end consumer VHS deck and > outboard comb filter. There were problems. In addition to the > occasional dropped frame, if I looked very closely at a captured frame > with matching fields I could see that the scanlines were slightly > misaligned. The misalignment was by different amounts in different > parts of the frame, and I'm pretty sure it changed every time I > recaptured the same sequence. > > I upgraded to a professional VCR with S-Video output and an internal > time-base corrector, and the timing problems seem to have disappeared. > Unfortunately this might be an expensive solution and there's still no > guarantee it'll solve your particular problem. > > -Dave Dodge Hi, Dave
Thanks for your answer.
I was thinkung of this, therefore I also digitized from antenna and from DVBT.
The problem occures there, too. So video timing seems not to be the way to
solve the problem. My first thought was that something is fooling the sync
separator chip on the card to flip the odd/even signal too early or too late.
But now my brother (he also uses a DC30+) found that starting xawtv in
parallel to lavrec temporarily eliminates the problem. This makes me hope that
is is a software-thing to do. Maybe some mode-switch in the driver. Would be
the better place for the problem, because software is easier to fix than
hardware.
I have to do some checks for Ronald Bultje in this direction.
The chase's going on...
Regards,
Ralf
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