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It doesn't look that way on my TV.
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Yeah. I'll tell you a bit about the interlacing so that you understand this (as I only know german sites that explain it). When I'm done I'll edit this post.
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If I capture it like that, edit it, and put it back on a DVD or tape will it look normal on the TV? The video isn't quite smooth either.
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Yes, It'll look normal and smooth, just as you're used to.
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Our TV, and video cameras, don't use entire frames to record and display. They only use half the frame, so called fields, consisting of either the even or the odd lines. It's alternating, so if one field consists of the even lines, then the next field consists of the odd lines, then even, odd, etc.
Now these fields aren't shot at the same time, but one after another. The TV displays these fields succesively, so what you see are not 29.97 frames per second, but twice as many fields. Therefore it looks really smooth on the TV, it's like about 60fps actually, just that they are not complete frames.
The PC does not display interlaced, it always displays entire images. Hence, both fields - which are meant to be shown succesively - are displayed simultaneously. Therefore you see the discrepancy of both fields as the interlaced lines. The even and odd lines are in fact 2 pictures in 1.
So, since both fields are shown at once on the pc, you do see only 29.97 fps, therefore the video doesn't look as smooth on the pc as it does on the TV.
When you burn that to dvd or copy back to tape, your TV will display the fields succesively, then you won't see the lines and the video will be smooth.
This looks like a good site about it. It has images so you can see how it works.
http://www.lurkertech.com/lg/fields/fields.html
RJ