Video smears in quick movements

Hi.
I want to show a camera attached to a USB device in realtime
at 800x600 pixels with the highest quality.
the app is on local machine only so there's no bandwidth
consideration but it must be realtime with no delay.
My problem is that when i show the video, the pictures
"smears" on quick movements as you can see here
Example
there are lines on the video.
I've tried to change the framerate, quality, keyframes....
Any thoughts? I have seen it work much better in the
snowflakes expample and the human torch but there's no source code
for that...
Thanks in advance!

It's not actually smearing but what we call field mush. The
tiny horizontal
lies you see. Though video plays at 30 fps, there are really
60 fields ( odd
and even) captured. the picture you see is an intermixed
result of the two.
It is possible that some of the software that you are using
has settings
that you can adjust; one of which is for the treatment of
these fields. For
instance, in AfterEffects, you can interpret the footage file
choosing odd
field first, even field first or no fields. Odd and Even
fields are
sometimes call Upper and Lower fields. On the technical side,
things are
never simple or so it seems.

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