What was your full capture chain and what did you do in terms of post processing on the original to arrive at the provided sample?
The fact that the JVC doesn't do seems to say something, but at the same time, I don't think you can call it a frame or field lag per se since it's not like the prior image stays stuck when the rest changes. It's almost like the maybe there's a single vertical line shift down on that left part of the imageif I'm looking at the right thing?
VerticalDownShift.jpg
It's also kind of interesting that the entire bar of "head switching noise" at the bottom is scooted over to the right by the same amount.
I'm pretty sure the top line is supposed to be a "partial 3/4 width line" or at least that's what I usually see coming off of the AG1980 if capturing all 486 vertical lines using something like an SDI capture card. If your line started "sooner", I could see it throwing the rest of the lines off by a partial amount maybe? Just a theory though. Here's an example of the partial top line that I get using an SDI capture card:
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If you have a tape you could send me that does this (that you've already captured), I can verify if it's your AG1980 or if they all are going to do that since I have access to 10 AG1980's or so that I can try it out on and report back. PM me if you want to send me a tape to try.
