Archived from groups: rec.video.desktop (More info?)

I've posted about this before, but now have some additional observations and
hope someone can suggest what it means.

To briefly describe the problem, when capturing home movie (film) footage
through a Digital8 camcorder, using Firewire and the pass-through function,
that is doing it "on the fly", when I render the resulting avi file for
output to tape/monitor, the image has numerous, faint narrow bands as if the
image is made up of a bunch of almost but not quite invisible translucent
strips.

Further, I also get the banding if I play an analog tape made in an analog
camcorder and capture via Firewire/DV. This particular model Dig8 cam is
backwards compatible with analog 8/Hi8 tapes. This problem is only observed
after rendering for output to tape. If I play the tapes directly to a TV,
the banding isn't there.

At someone's suggestion, I tried capturing via the AMcap utility, to see if
the results were different than captruing via Pinnacle Studio 9. It made no
difference.

However, what I did find is that by capturing to the digital tape first
(i.e. in Dig8 format) then outputting that vie Firewire, Pinnacle, I don't
get the banding when rendering for tape output.

So, if the output using pass-through and when playing analog tapes gives
different results than capturing off a digital tape, what does this suggest?

Further, I don't get the banding artifact if I capture in mjpeg format. It
only happens when doing Firewire/DV capture.

Using XP Home, Pinnacle Studio9, Sony TRV 240 Dig8 Camcorder.

Thanks for all shared wisdom.